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Archived Manual Chapter: WANJet User Guide version 4.0: Monitoring Performance - 5
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5

Monitoring Performance


Introducing reports

There are several different reports in the WANJet appliance's Web UI that you can use to monitor the status, connectivity and performance of your WANJet appliance. Most reports fall into one of the following categories:

  • Monitoring
  • Connectivity
  • General

You can access the following reports by expanding Reports in the menu and clicking one of the following report options:

  • Status
  • Realtime Traffic
  • Comparative Throughput
  • Diagnostics
Note

To ensure accurate reports, we suggest that you frequently synchronize the time settings on the WANJet appliances and check the time settings for the Reports. For more information, see Time settings .

This chapter also covers other ways of obtaining information about WANJet appliance's performance, including network diagnostic tools, operational logs, and integration with third-party reporting tools.

Status report

The WANJet appliance's Status report provides the status and details for a remote WANJet appliance. If the remote WANJet appliance has a redundant peer, the Remote Status report also displays details about the peer appliance. The Remote Status report is the first screen displayed when you log in to the WANJet appliance Web UI.

To view the Status report

In the navigation pane, expand Reports and click Status.
The initial WANJet Status screen displays the following information for all connected WANJet appliances:

  • Status
  • IP address
  • Alias
  • Version
  • License key status (not entered, not valid, expired, or OK)
Note

If you want to view the status of the remote WANJet appliance immediately after changing any of its settings, you must wait until the local WANJet appliance communicates with the remote WANJet appliance. This can take up to two minutes. Once this time has elapsed, refresh your browser.

Real Time Traffic report

The Real Time Traffic report displays a graph of all network traffic, in real time, over both the LAN and the WAN. This provides an at-a-glance overview of the network traffic that is passing through the WANJet appliance.

To view a graph of network traffic in real time

In the navigation pane, expand Reports and click Real Time Traffic.

The Real Time Traffic screen displays.

 

 

Figure 5.1 Real Time Traffic report

In this graph:

  • The vertical axis indicates the amount of network traffic, in bytes per second.
  • The horizontal axis indicates the time (using a 24-hour clock) in hours, minutes, and seconds, to the nearest ten seconds.
  • The blue line (LAN In) represents the raw data that destined for the WAN passing into the local WANJet appliance from the LAN.
  • The yellow line (LAN Out) represents optimized data passing out of the local WANJet appliance en route to the remote WANJet appliance.
  • The red line (WAN In) represents optimized data passing into the local WANJet appliance from its remote partner.
  • The green line (WAN Out) represents reconstituted data passing out of the local WANJet appliance and into the LAN.

Comparative Throughput reports

You can generate a Comparative Throughput report based on any combination of traffic direction, data type, and time period.

At the top of each report screen, there is a summary of the amount of data (in megabytes) handled before and after compression, and the compression ratio achieved (expressed as a percentage). These figures vary according to the time period selected and the direction of traffic. Comparative Throughput reports refresh automatically every two minutes. You can easily import CSV reports to a database, or spreadsheet package.

To generate a Comparative Throughput report and save it to CSV

  1. In the navigation pane, expand Reports and click Comparative Throughput.
  2. On the menu bar, click one of the following to select the direction of traffic and to display the associated report screen:
    • Total Throughput
      Reports on all the traffic that the WANJet appliance processes.
    • Sent Throughput
      Reports on only the outgoing (sent) data processed by the WANJet appliance.
    • Received Throughput
      Reports only the incoming (received) data processed by the WANJet appliance.
  3. From the options below the Throughput table, click one of the following to determine how the data is displayed:
  4. From beneath the chart, click an option that represents the time period for which you want to view collected data. The default is current day.
    • Note: The WANJet appliance saves all of the reports generated for the last hour, every hour. If you stopped or restarted the WANJet appliance, or any external termination occurred, you will be able to access the last set of saved reports when you restart the WANJet appliance.
  5. From the Download Report list, choose CSV.
  6. Click the Download button.

Performance Increase report

The Performance Increase report displays the percentage increase in bandwidth, due to using the WANJet appliance.

 

 

Figure 5.2 Performance Increase report

In this graph, the vertical axis indicates the percentage increase in bandwidth. This is calculated by comparing the bandwidth freed up by the WANJet appliance to the bandwidth used after optimization. This is calculated as follows:

(Freed Bandwidth / Bandwidth after optimization) * 100 = Percentage Performance Increase

For example, if your bandwidth before the WANJet was 100MB, and the bandwidth used by data after the WANJet is 25MB, then the amount of bandwidth freed up by the WANJet is 75MB. With these values, the equation results in the following:

(75MB / 25MB) x 100 = 300% performance increase

Actual Bandwidth Expansion report

The Actual Bandwidth Expansion report displays the actual bandwidth amount that the WANJet appliance has freed, by optimizing network data.

 

 

Figure 5.3 Actual Bandwidth Expansion report

In this graph, the vertical axis represents the bandwidth expansion in kilobytes, megabytes, and so forth. (The unit used depends on the extent to which the bandwidth has expanded over the selected time period.)

Optimized Data report

The Optimized Data report displays the difference in the amounts of network traffic before and after WANJet appliance processes the data.

 

 

Figure 5.4 Optimized Data report

In this graph:

  • The vertical axis indicates the amount of network traffic before and after optimization (in kilobytes, megabytes, and so forth).
  • The blue bar represents the amount of traffic before optimization.
  • The yellow bar represents the amount of freed bandwidth.

Overall Data report

The Overall Data report allows you to view and compare the amounts of passthrough data, raw data, and optimized data.

 

 

Figure 5.5 Overall Data report

In this graph:

  • The vertical axis indicates the amount of data passing through the link (in KB, MB, GB, and so forth).
  • The green bars represent the amount of passthrough data.
  • The blue bars represent the amount of compressed (optimized) data.
  • The yellow bars represent the amount of freed bandwidth.
  • The bars as a whole represent the total amount of data passing through the F5 appliance.

Link Utilization report

The Link Utilization report is similar to the Optimized Data report . However, instead of showing the total amount of data optimized over a given time period, this Link Utilization report displays the average amount of bandwidth used per second, compared to what would have been used if network traffic had not been optimized.

 

 

Figure 5.6 Link Utilization report

In this graph:

  • The vertical axis indicates the amount of bandwidth (in kilobits per second, megabits per second, and so forth).
  • The blue bars represent the actual bandwidth used.
  • The bars as a whole represent the amount of bandwidth that would have been used if network traffic had not been optimized; therefore, the yellow bars represent the amount of bandwidth saved.

Diagnostics report

The Diagnostics report provides you access to a range of useful information, such as IP addresses, error log files, and the results of popular network analysis tools.

To view diagnostics information

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. Click one of the following links for additional information:

Monitoring

Monitoring diagnostic information is broken up into the following categories:

  • Interfaces
  • Optimized Sessions
  • Passthrough Sessions
    • All Passthrough Sessions
    • Optimized Eligible Connections
    • Autopass
    • Realtime
  • WANJet Links
  • RADIUS status
  • TCP Statistics
    • Connection States
    • Packet Retransmissions
    • Received queue packets Pruned
  • TDR Statistics
  • QoS
  • VLANs

Interfaces diagnostics

A WANJet appliance typically has at least two active network interfaces: one for the connection to the LAN and one for the connection to the WAN. In addition, if a redundant peer WANJet appliance is present on your LAN, there is an interface for that connection. (For more information, see Redundant peers .)

To view diagnostics for interfaces

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. On the menu bar, choose Interfaces from the Monitoring menu.
    The Interfaces screen displays with the following information for each network interface:
    • The interface's MAC address (a unique identifier attached to most forms of networking equipment).
    • The interface's maximum speed (in Mbit/s) and duplex setting (Full Duplex / Half Duplex).
    • The interface's current status (Link ok / Link error).
    • Reception (RX) errors raised by the interface, including dropped packets, overruns, and frame errors.
    • Transmission (TX) errors raised by the interface, including dropped packers, overruns, carrier errors, and collisions.

Optimized Sessions diagnostics

The Optimized Sessions report displays all of the network connections at the application layer that are currently being optimized by WANJet appliance using the ACM5 process.

To view diagnostics for Optimized Sessions

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. On the menu bar, choose Optimized Sessions from the Monitoring menu.
    The Optimized Sessions screen displays.
    • Note: Optionally, you can view the Optimized Sessions screen by clicking the Optimized Sessions link from the menu from any screen in the Web UI. The counter beside the Optimized Sessions link displays the current number of optimized session.

      The Optimized Sessions report is divided into two sections: one for TCP and one for UDP traffic.

      The TCP section contains the following information:

    • Local IP
      IP address and port for the local machine.
    • Direction
      Direction of optimized data traffic flow. A right arrow indicates that the direction is from the local machine to the remote machine. A left arrow indicates that the direction is from the remote machine to the local machine.
    • Remote IP
      IP address and port for the remote WANJet appliance.
    • WANJet IP
      IP address for the remote WANJet appliance handing the optimized session.
    • The UDP section contains two columns with the IP address and port number for each UDP session's source and destination.

Note

For information about how to specify connections for optimization, see Optimization Policies .

Passthrough Sessions diagnostics

A passthrough session is a network connection (at the application layer) for which traffic is not optimized by WANJet appliance, but allowed to pass through the appliance untouched.

To view diagnostics for Passthrough Sessions

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. On the menu bar, choose Passthrough Sessions from the Monitoring menu.
    The Passthrough Sessions screen displays.
  3. The Passthrough Sessions report is divided into two sections: one for TCP traffic and one for UDP traffic, with specific information for each session.

    From this screen you can view one of the following reports:

    • All Passthrough Connections
      Displays a detailed list of all passthrough connections.
    • Optimize Eligible Connections
      Displays connections that were set up before the WANJet appliance was last activated. If the protocol and software allow it, you can intercept and reset these connections so that from this point on, they will be optimized using ACM5. This is most useful for connections that need to be live for a long time so that they can transfer large amounts of data, such as replication processes.
    • Autopass
      Displays a list of connections that are passed through automatically when the destination server is refusing connections.
    • Realtime
      Displays passthrough traffic throughput in real time.
Note

For information about how to specify connections for optimization, see Optimization Policies .

WANJet Links diagnostics

To view diagnostics for WANJet Links

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. On the menu bar, choose WANJet Links from the Monitoring menu.
    The WANJet Links screen displays the following information:
    • Remote IP
      IP address of the remote WANJet appliance.
    • #Retrans
      Number of retransmitted packets to the remote WANJet appliance.
    • #ACM5
      Number of network connections to the remote WANJet appliance that are being optimized using ACM5.
    • #ACM5 without compression
      Number of passthrough network connections that are not being optimized.
Note

For additional information about links to remote WANJet appliances, refer to Remote WANJet appliances .

RADIUS Status diagnostics

The RADIUS Status screen displays details of any RADIUS authentication servers known to the local WANJet appliance. Remote authentication through the RADIUS protocol is an alternative to local authentication with a user name and password stored on the WANJet appliance.

Note

For information about how to configure WANJet appliance to use RADIUS authentication, see Configuring remote authentication . For technical details about the RADIUS protocol, refer to http://www.ietf.org/rfc/rfc2865.txt.

To view diagnostics for RADIUS status

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. On the menu bar, choose RADIUS from the Monitoring menu.
    The RADIUS screen displays with the following information for each RADIUS server:
    • IP address
    • Secret
      The key that is used to authenticate RADIUS transactions between client and server.
    • Timeout period, in seconds
    • Number of times to retry a connection
Note

The WANJet appliance displays a warning message if the settings for both the timeout and number of retries are too high, because this could cause a delay in determining if the RADIUS server is not responding to a login attempt.

TCP Statistics diagnostics

TCP Statistics provide the following reports for TCP connectivity activity:

  • Connection States
  • Packet retransmissions
  • Receive queued packets pruned

The Connections States report is displayed by default.

To view diagnostics for TCP Statistics

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. On the menu bar, choose TCP Statistics from the Monitoring menu.
    The TCP Statistics screen displays with the Connections States report, by default.
  3. Click the options above the report to view one of the following reports:
    • Connections States
    • Packet Retransmissions
    • Receive queue packets Pruned

Connection States

The Connection States report displays a graph of current state for each TCP connection that is visible to the WANJet appliance, for both optimized and passthrough connections. In this report, three lines represent the number of connections in the following states:

  • ESTABLISHED
    Those connections that have been successfully opened and are working normally.
  • TIME-WAIT
    Connections in the TIME-WAIT status are waiting to see that the remote TCP received the acknowledgment of a connection termination request. This can take up to four minutes.
  • Other
    Other possible connection states include:
    • LISTEN
    • SYN-SENT
    • SYN-RECEIVED
    • FIN-WAIT-1
    • FIN-WAIT-2
    • CLOSE-WAIT
    • CLOSING
    • LAST-ACK
Note

For more information about these states, see IETF RFC #793 at http://www.ietf.org/rfc/rfc793.txt.

Packet Retransmissions

TCP segments that time out without being acknowledged by a destination host are retransmitted by the source host. A high number of these retransmitted segments can indicate network problems. Therefore, the Web UI includes a report that tracks those numbers and their trends.

The Packet Retransmissions report consists of a graph with a blue line. The blue line indicates the number of TCP segments (which often correspond to IP packets) that had to be retransmitted per second.

Receive queue packets Pruned

The Receive queue packets Pruned report provides a graphic representation of the number of segments pruned from the TCP receive queue due to socket overrun. Pruning can occur if the TCP receive buffer is too large on the receiving host. The optimal buffer size is twice the product of the bandwidth and the delay.

Note

For more information about TCP tuning background, see http://www-didc.lbl.gov/TCP-tuning/background.html.

TDR Statistics diagnostics

Transparent Data Reduction (TDR) further enhances network optimization by caching the contents of frequently accessed files in memory.

To view diagnostics for TDR Statistics

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. On the menu bar, choose TDR Statistics from the Monitoring menu.
    The TDR Statistics screen displays the following information:
    • WANJetIP
      IP address of the remote WANJet appliance.
    • Sent Bytes (TDR)
      The amount of data sent in bytes, to which TDR has been applied since the WANJet link became active.
    • Sent Bytes (other)
      Amount of data in bytes to which TDR has not been applied.
    • Received Bytes (TDR)
      Amount of received date in bytes to which TDR has been applied.
    • Received Bytes (other)
      Amount of received date in bytes to which TDR has not been applied.
    • TDR efficiency %
      Percentage of data sent across the link to which TDR has been applied. The bold number at the bottom of the report is the average for all remote WANJet links.
Note

For more information about TDR, see Transparent Data Reduction .

QoS diagnostics

Quality of Service (QoS) policies can help to improve network performance by dedicating bandwidth to specific network traffic.

To view diagnostics for QoS policies for remote networks

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. On the menu bar, choose TDR Statistics from the Monitoring menu.
    The QoS report screen displays the following information:
    • Remote
      The Remote network that has a QoS policy assigned to it.
    • Policy
      Name of the QoS policy assigned to the remote network.
    • Rate
      Actual bandwidth assigned to each QoS policy.
    • Bytes Sent
      Number of bytes sent for each QoS policy.
    • Packets Sent
      Number of packets successfully sent for each QoS policy.
    • Dropped
      Number of packets dropped for each QoS policy.
Note

For additional information about QoS, refer to Application QoS Policy .

VLANs diagnostics

A Virtual LAN (VLAN) is a computer network which has its boundaries defined logically, rather than physically. VLANs must be explicitly added to the WANJet appliance Web UI, since they are often implemented by adding tags to Ethernet frames, and these tags must be preserved during optimization.

To view VLANs supported by WAN optimizer

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. On the menu bar, choose VLANs from the Monitoring menu.
    The VLANs Information screen displays the following information.
    Table 5.1 VLAN report
    Tag
    ID of the virtual VLAN
    Packets/Bytes
    Number of packets and total size in bytes of the network traffic exchanged with the VLAN.
    Aware
    Indicates whether the WANJet appliance can identify this virtual LAN.
Note

For information about configuring VLANs to work with the WANJet appliance, refer to Virtual LANs .

Connectivity

Connectivity diagnostic information is organized in the following categories:

  • All
  • Ethernet
  • IP
  • Bridge
  • Remote WANJet

Ethernet diagnostics

The Diagnose Ethernet screen displays details about the Ethernet interfaces for the local WANJet appliance. For WANJet appliance to work correctly, the speed and duplex settings for the LAN and WAN interfaces should be the same. The Diagnose Ethernet screen confirms if that is the case, and displays a warning if it is not.

Note

For information about configuring the speed and duplex settings for Ethernet interfaces, see Changing the interface speed ).

To view diagnostics for Ethernet connectivity

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. On the menu bar, choose Ethernet from the Connectivity menu.
    The Diagnose Ethernet screen with a section for each of the following Ethernet interfaces:
    • eth2 (PEER)
    • eth3 (ETH3)
    • eth1 (WAN)
    • eth0 (LAN)

The following information displays for each interface:

  • Speed
  • Transmitted
  • Received
  • Receive errors
  • Collisions

WANJet appliance QoS does not work unless the Ethernet interfaces are connected as follows:

  • The eth0 interface must be connected to the LAN.
  • The eth1 interface must be connected to the WAN.
Note

Note: If a redundant pair is present, the eth2 interface must be connected to the redundant peer. For more information, see Redundant peers .

IP diagnostics

The Diagnose IP screen displays technical details about the local WANJet appliance's IP configuration.

To view diagnostics for IP connectivity

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. On the menu bar, choose IP from the Connectivity menu.
    The Diagnose IP screen displays the following information:
    • The IP address of the local WANJet appliance.
    • The netmask of the local subnet.
      This determines how much of the address identifies the subnetwork on which the WANJet appliance host resides, and how much identifies the host itself.
    • The IP address of the WAN gateway used by the local WANJet appliance.
    • The results of the local gateway ping.
Note

Addresses must adhere to the Internet Protocol standards. For more information about configuring addresses, see Updating a configuration.

Bridge diagnostics

The Diagnose Bridge screen displays details of the internal connectivity, or bridge, between Ethernet interfaces between the two WANJet appliances.

To view diagnostics for Bridge connectivity

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. On the menu bar, choose Bridge from the Connectivity menu.
    The Diagnose Bridge screen displays the following information:
    • The IP address and MAC address of the WAN gateway that the local WANJet appliance uses
    • The Ethernet interfaces that are linked by the bridge

WANJet appliance QoS does not work unless the Ethernet interfaces are connected as follows:

  • The eth0 interface must be connected to the LAN switch or router.
  • The eth1 interface must be connected to the WAN gateway.

Remote WANJet appliance diagnostics

The Diagnose Remote WANJet screen displays details about the remote WANJet appliances that are connected to the local WANJet appliance.

Note

For information about how to configure remote WANJet appliances, see Remote WANJet appliances .

To view diagnostics for remote WANJet connectivity

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. On the menu bar, choose Remote WANJets from the Connectivity menu.
    The Diagnose Remote WANJet screen displays the following information for each remote WANJet appliance:
    • The software version number, which is compared to the local version number
    • The status of the local WANJet appliance
    • The number of remote WANJet appliances
    • The IP address for the remote WANJet appliance
    • The WANJet appliance type, which will be Single if there is no redundant peer at the remote end
    • Whether the remote WANJet appliance is responding to pings from the local WANJet appliance
    • Whether the local WANJet appliance can connect to the remote WANJet appliance on the ports that WANJet appliances use to communicate with each other. These ports are 3701, 3702, and 3703 by default.

General

General diagnostic information is broken up into the following categories:

  • Bridge Forwarding Database
  • Administration Tools
  • Diagnostic Log

To view general diagnostic information

In the menu bar of the Diagnostic screen from the General menu, choose the item that corresponds to the information that you want to view.

Bridge Forwarding Database diagnostics

The Bridge Forwarding Database Media Access Control (MAC) Addresses screen lists all of the network devices that have sent traffic through the local WANJet appliance bridge.

To view diagnostics for Bridge Forwarding Database

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. On the menu bar, choose Bridge Forwarding Database from the General menu.
    The Bridge Forwarding Database screen displays the following information for each network device configured:
    • MAC Address
      A unique identifier attached to most forms of networking equipment, and used by many network protocols.
    • IP Address
      Only available if the device has communicated directly with the WANJet appliance
    • Interface
      The interface is defined as eth0 if the device is connected to the local WANJet appliance through the LAN and as eth1 if the device is connected through the WAN.
    • Local
      This column displays Yes for the WANJet appliance's own two internal network devices; that is, its Ethernet interfaces.

Administration Tools

The WANJet appliance provides a browser-based user interface for the following three network administration diagnostic tools:

  • Ping
  • Traceroute
  • Packet Capture

To use the administration tools

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. On the menu bar, choose Administration Tools from the General menu.
    The Administration Tools screen displays. For each tool, there is a box in which you can specify command-line parameters, and a button to initiate the program using the shell.
  3. Click the button for the tool that you want to run.
    The lower half of the screen displays the following information:
    • The full path and parameters to the process, as it appears on the command line.
    • The process number, as allocated by the operating system. You can stop a process by clicking the process number before it has finished running.
    • The process output, which is similar to what you would see in the shell after running the program from the command line.
    • The return code, which is 0 if the program returns successfully.

Ping

The ping tool provides a simple test to confirm that a target host is online and reachable through a TCP/IP network. It works by sending out ICMP request packets to the target and listening for response packets in return. The percentage of packets lost, as well as the time taken to send and receive them, provides an indication as to how well the connection is working.

Note

If a ping is unable to reach a target host, that is the statistical summary shows a 100% packet loss, it does not necessarily mean that there is no working network connection between source and target. For example, a firewall might be blocking ICMP requests from reaching the target host, but allowing some other network traffic through. For more information about the ping tool, see http://en.wikipedia.org/wiki/Ping.

By default, WANJet appliance provides the following parameters for ping:

-R -c 5 -w 10 <IP address of target host>

The default target is the gateway machine for the subnet on which the WANJet appliance resides. You can change the parameters by typing new parameters in the associated text box.

Important

F5 Networks recommends that only advanced users change parameters.

The WANJet appliance displays the following output for ping:

  • The IP addresses of both the target host and the source host (the server on which ping is running)
  • A line for each ICMP response packet received back from the target showing the packet's sequence number, time-to-live, and round-trip time (request time + response time)
  • A statistical summary showing:
    • The number of request packets transmitted
    • The number of response packets received back
    • The percentage of lost packets
    • The minimum, average, and maximum round-trip times

Traceroute

The traceroute tool is used to plot the route that packets take to a target host. It can be helpful in determining the location of any network disruption.

Traceroute works by incrementing the time to live (TTL) value of successive packets sent out. TTL values are decremented as packets pass through intermediate hosts (known as hops). When the TTL reaches a value of 1, a time exceeded message is sent back to the source host (the host on which traceroute is running). By examining the origins of these messages, you can reconstruct the path that packets take to the target host.

Note

Traceroute sends out UDP datagram packets by default. If UDP probes are being blocked by a firewall, you can use ICMP echo requests instead (as ping does) by specifying the -I option. Packets are normally sent to port 33434, which should not be in use. If the target host is listening on port 33434, you can specify a different port using the -p option.

For more information about traceroute, see http://en.wikipedia.org/wiki/Traceroute.

By default, the WANJet appliance provides the following parameters for traceroute:

-v <IP address of target host>-c 10 (not port 10000)

As with the ping tool, the default target is the gateway for the local subnet. You can change the parameters by typing new parameters in the associated text box.

Important

F5 Networks recommends that only advanced users change parameters.

The WANJet appliance displays the following output for traceroute:

  • The IP address of the target host, the maximum number of hops (that is, the maximum TTL), and the size of the packets sent.
  • A list of hosts through which packets are passing together with the round-trip time taken for each of the three packets (packets are sent out in threes, by default) to travel from the source host, to the intermediate host, and back again.

Packet Capture

You can use the tcpdump utility to intercept and display the contents of TCP/IP packets on the network. This is useful for debugging your network configuration, because it allows you to isolate the source of a problem by determining if all routing is working correctly. Data is saved to a PCAP file.

Note

You need a specialized application, such as Ethereal (a network protocol analyzer which runs on both Linux and Windows) to read PCAP files produced by tcpdump. You can download Ethereal and its documentation for free from http://www.ethereal.com/.

By default, the WANJet appliance provides the following parameters for tcpdump:

-c 10 (not port 1000)

Packets sent to port 10000 are ignored, since this is the port that the Web UI uses to communicate with the local WANJet appliance. You can change the parameters by typing new parameters in the associated text box.

Important

F5 Networks recommends that only advanced users change parameters.

When the tcpdump process has finished running, the Tools screen displays a link to the PCAP file that is produced. If you have an application that can read PCAP files, you can open the PCAP file directly, or you can save the file to disk. The PCAP file is also stored on the server where tcpdump is running, at the following location:

/usr/local/NetOptimizer/logs/dump.pcap

Diagnostic Log

The Diagnostic Log contains status information and errors that the WANJet appliance records during a session. This Diagnostic Log keeps you informed and helps you resolve any problems that you might encounter while working with the WANJet appliance. You can clear the data in the Diagnostic Log at any time. You can also download a system snapshot as a zipped text file to your hard disk. You can provide this zipped text file to the F5 Networks Technical Support team to help resolve technical issues.

To view the Diagnostic Log

  1. In the navigation pane, expand Reports and click Diagnostics.
    The initial Diagnostics screen displays.
  2. On the menu bar, choose Diagnostic Log from the General menu.
    The Diagnostic Log screen displays.

To clear the Diagnostic Log

  1. From the Diagnostic Log screen, click the Clear Logs button.
    A warning message displays to let you know that all data saved to the error and report logs will be deleted.
  2. Click OK to delete the logs.

To download a system snapshot

  1. From the Diagnostic Log screen, click the System Snapshot button.
    The browser opens a download window for you to save the snapshot file to your local disk.
  2. Save the snapshot file. The system snapshot file is named snapshot.txt.gz. This is a compressed plain text file.
    • Note: If you want to view the snapshot file, you will first need to extract it using a tool such as gunzip, which is available at www.gzip.org.
  3. Rename the compressed file in the following format:
  4. snapshot-<yourcompanyname-yyyy-mm-dd>

    For example:

    snapshot-acme-2005-04-22

    You can provide this file to F5 Network Technical Support for assistance in troubleshooting issues.

Third-party reporting systems

The WANJet appliance is integrated with several third-party reporting systems, including Syslog, SNMP, and RMON2.

Syslog reports

With the WANJet appliance, you can view syslog reports from an external syslog server. These reports include data, such as the amount of sent and received data that is processed by the WANJet appliance.

Note

You must type the IP address for the machine you are using in the Syslog Server IP box of the Syslog and SNMP screen, in order to view syslog data. For more information, Configuring Syslog and SNMP settings .

SNMP reports

With the WANJet appliance, you can use an external computer as a management station for viewing Simple Network Management Protocol (SNMP) logs that the WANJet appliance produces on the local appliance. The SNMP data trees are stored in an Management Information Base (MIB).

The SNMP data on WANJet appliance includes information about the network cards, total bandwidth saved for sent and received data, and amounts of sent and received data processed using ACM5.

Note

For the WANJet private MIB file, see Appendix B, WANJet Appliance Private MIB .

To configure the WANJet appliance to use an SNMP server

  1. In the navigation pane, expand Configuration and click Monitoring.
    The initial WANJet Syslog and SNMP screen displays.
  2. In the Syslog Server IP box, type the community string and IP address for the SNMP server.
    For detailed instructions, see Configuring Syslog and SNMP settings .
  3. Click IP Access Control.
    The IP Access Control screen displays.
  4. Verify that the Web UI has access to the IP address of the SNMP server. The default setting is to grant access to all, but this may have been changed by an administrator.
    For detailed instructions, see Granting Web UI access .

To view SNMP reports

To view the SNMP tables, use SNMP-compliant software. You need to provide SNMP-compliant software with the IP address for the WANJet appliance and community string that you specified on the Syslog and SNMP screen.

Note

For a list of WANJet appliance SNMP errors and descriptions, see Appendix A, WANJet Appliance Errors .

RMON2 Reports

You can use the WANJet appliance to view RMON2 data trees, which are part of the SNMP data trees that the WANJet appliance produces. The RMON2 data is stored in a MIB.

Note

For the WANJet private MIB file, see Appendix B, WANJet Appliance Private MIB .

The RMON2 data on WANJet appliance includes data sent and received between two nodes, the IP addresses of these nodes, the port used to send and receive data, data size before and after the WANJet appliance processes it, times at which data was sent, and the numbers of connections.

To enable RMON2 Logs

  1. In the navigation pane, expand Configuration and click Monitoring.
    The initial WANJet Syslog and SNMP screen displays.
  2. Check the Enable RMON2 Logs check box.
  3. Click the button next to either Raw Data or WANJet Data.
  4. In Community String box, type the community string.
    For detailed instructions, see Configuring Syslog and SNMP settings .
  5. Click the Save button.

You access RMON2 data the same way that you access SNMP data. Before accessing RMON2 data, you must specify a community string and IP address for the SNMP server as discussed in the previous section for SNMP reports. Set the RMON2 preferences on the Syslog and SNMP screen.

For detailed instructions, see Configuring Syslog and SNMP settings . Note that the SNMP server must have access to WANJet appliance, as described under Granting Web UI access .

To view RMON2 reports

To view the RMON2 data tree, use SNMP-compliant software.You need to provide SNMP-compliant software with the IP address for the WANJet appliance and community string that you specified on the Syslog and SNMP screen.




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