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Manual Chapter: Using Additional IP Application Switch
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This section describes the LED behavior of the BIG-IP® system, version 9.0 and later, on the BIG-IP 8400 platform.
There are four types of indicator LEDs on the faceplate of each unit. Each indicator LED serves a specific function. The indicator LED functions are defined in Table 4.1.
Reports the power status: on (green), present (yellow), or off (none). Note that units with the capacity for additional power supplies have a Power LED for each power supply bay.
Reports a non-specific alert level. Use SNMP traps, system logs, or the LCD display for more information.
When the unit is in a standard operating state, the LEDs behave in a defined manner. The standard operating states are defined in Table 4.3.
Important: An 8400 platform that shows no light on the Activity LED during regular operations is functioning normally. For information about a green solid Activity LED on an 8400 platform, see Green solid Activity indicator LED.
When there is an alert condition on the unit, the Alarm LED behaves in a specific manner. Table 4.4 lists the Alarm and the corresponding LED behavior.
Alerts that cause the indicators to change are defined in the /etc/alertd/alert.conf and /config/user_alert.conf files on the BIG-IP system. You should only edit /config/user_alert.conf to add new alerts. The /etc/alertd/alert.conf defines standard system alerts.
Using a text editor, such as vi or pico, open the file user_alert.conf.
Add the lines shown in Figure 4.1 to the end of the file.
Save the file and exit the text editor.
The front panel LEDs now indicate when nodes are marked down.
alert BIGIP_MCPD_MCPDERR_POOL_MEMBER_MON_DOWN "Pool member (.*?):(.*?) monitor status down." {
snmptrap OID=".";
lcdwarn description="Node down" priority="1"
alert BIGIP_MCPD_MCPDERR_NODE_ADDRESS_MON_DOWN "Node (.*?) monitor status down." {
snmptrap OID=".";
lcdwarn description="Node address down" priority="1"
Figure 4.1 Adding node status to the user_alert.conf file
A yellow intermittent Activity LED indicates that host traffic is present. Also, while the kernel is loading, the Activity indicator LED flashes yellow intermittently when the disk is accessed. This condition is normal and occurs only during boot up.
When the Activity indicator LED flashes green intermittently, it indicates Ethernet traffic leaving the switch subsystem and going to the CPU subsystem. Because internal traffic may cause this indicator to be active, you may see the Activity indicator flicker green even though there is no external client/server traffic.
When an 8400 platform shows a solid green Activity LED during normal operations, it indicates that the platform is operating outside of expected behaviors and could be considered abnormal. Contact technical support for assistance.
When the Status indicator LED is solid yellow or green, it indicates that the BIG-IP unit is in a Standby state (yellow) or an Active state (green).
The 8400 and 8800 platforms have a set of 12 SFPs and a set of 12 RJ45 10/100/1000 copper interfaces that are connected internally. Each set of interfaces is numbered from 2.1 through 2.12. It is important to note the following about these interfaces:
If you try to use interfaces with the same number, the SFP interface overrides the RJ45 interface, however, you can use software settings to override the hardware default.
From the command line interface, use the following syntax to display the current status and the settings for all installed interfaces:
Figure 4.2 shows an example of the output you see when you issue this command on an active/standby unit in active mode.
You may specify a media type or use auto for automatic detection.
Use auto for automatic selection.
All interfaces on the BIG-IP system default to auto-negotiate speed and duplex settings. We recommend that you configure any network equipment that you plan to use with the BIG-IP system to auto-negotiate speed and duplex settings. If you connect the BIG-IP system to network devices with forced speed and duplex settings, you must force the speed and duplex settings of the BIG-IP system to match the settings of the other network device.
Warning: If the BIG-IP system is attempting to auto-negotiate interface settings with an interface that has the speed and duplex settings forced, you will experience severe performance degradation.
You can set duplex mode to full or half duplex. If the media type does not accept the duplex mode setting, an onscreen message indicates this. If media type is set to auto, or if the interface does not accept the duplex mode setting, the duplex setting is not saved to /config/bigip_base.conf.
The Packet Velocity® ASIC 10 optimizes application performance, and reduces application wait times. An ASIC is an Application Specific Integrated Circuit. The Packet Velocity ASIC is designed to accelerate Layer 4 decisions. Off-loading the Layer 4 decisions enables the BIG-IP system to increase performance and throughput for basic routing functions (Layer 4) and application switching (Layer 7).
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