Search Tips

Searching AskF5

Overview

This document introduces basic search concepts, and describes advanced techniques that produce more efficient search results.

Topics

 

Getting started with search

To search for a document, type a few descriptive words in the search box and click the Search button. A results page appears with a list of documents that are related to your search terms, with the most relevant results appearing first. By default, only documents that include all of your search terms are returned. To broaden or restrict the search, include fewer or more terms. You do not need to include "and" between the terms. For example, to search for platform guides related to VIPRION systems, type the following:

viprion platform guide

The search engine uses sophisticated text-matching techniques to find pages that are both important and relevant to your search. For instance, the search engine analyzes not only the candidate page, but also the pages that link to it. The search engine prefers pages in which your query terms are near each other. Every search result lists one or more excerpts from the document, to display the search terms in context. In the excerpt, your search terms are displayed in bold text so that you can quickly determine if that result is from a page or document you want to visit.

Capitalization

Searches are not case sensitive. All letters, regardless of how you enter them, are handled as lower case. For example, searches for TCP, Tcp, and tcp return the same results.

Common words

The search engine ignores some common words and characters when they are used in conjunction with other search terms because they tend to slow down the search without improving the results. For example, if you search for how, the search engine returns results for how. However, if you search for how to configure http profiles, the search engine ignores the word how.

Numbers

When you search for numbers, do not use exponential numbers, such as 1e10, or negative integers, such as -12.

Numbers that are separated by commas are treated as separate figures, not fractional numbers; in other words, the comma is treated as a term separator, not a decimal separator. For example, if you type 3,75, the search query is treated as a search for two separate terms, 3 and 75. In addition, commas that separate every three digits are ignored. For example, both 10,000 and 10000 are treated alike.

Filtering search results

On the search results page, you can refine your results by selecting a filter from the Filter Search Results panel on the right side of the screen.

Applying a search filter

To apply a search filter, select the filter name in the Filter Search Results panel.

Note: If you selected a filter on the search page, that selection will be reflected in the Filter Search Results panel.

For example, if you only want to view documents that apply to BIG-IP LTM, select BIG-IP LTM / VE under the Product heading. The search results screen refreshes to display search results that apply to BIG-IP LTM and BIG-IP LTM VE. Additionally, a Version heading now appears in the Filter Search Results panel, where you can select a specific software version:

 

Removing a search filter

To remove a selected search filter, click the red X icon next to the filter name in the Filter Search Results panel:

 

 

Alternatively, you can click the filter you want to disable in the breadcrumb above the search results:

 


Widening your search

You can expand your search by using the OR operator. To retrieve pages that include either word A or word B, use an uppercase OR between terms. For example, to search for a document which contains either 6400 or 8400, type the following:

6400 OR 8400


Refining your search

Since the search engine returns only documents that contain all of the words in your query, refining or narrowing your search is as simple as adding more words to the search terms you have already entered. The refined query returns a subset of the pages that were returned by your original broad query. If that does not get the results that you want, you can try to exclude words, search for exact phrases, or restrict the search to a range of numbers.

Word exclusion

If your search term has more than one meaning, you can focus your search by adding a minus sign (-) in front of words related to the meaning you want to avoid. Make sure you include a space before the minus sign. You can exclude multiple words within a search.

For example, to search for nfs and exclude search results which contain nfsv2 or udp, type the following query:

nfs -nfsv2 -udp

Phrase searches

You can search for an exact phrase in the following ways:

  • Enclosing the phrase in quotation marks ("). The search engine only returns documents that include the exact phrase you entered. For example:

    "overview of snat"

  • Using phrase connectors such as hyphens, slashes, periods, equal signs, and apostrophes between every word of your search query.

Phrase connectors and quotation marks join your search words as a single unit. For example, if you type the following query, the search engine treats it as a phrase search even though the search words are not enclosed in quotation marks.

denial-of-service

Advanced search operators

The search engine supports several advanced operators, which are query words that restrict your search to a smaller set of documents. When you enter your search query, do not add a space between the search operator and the search terms.

Operator Description Example

allintitle:

Restricts the search to documents whose HTML title contains all the search terms.

Also see the intitle: search operator.

Typing allintitle:f5 support in the search box returns only documents that have both f5 and support in the HTML title.

allintext:

Restricts the search to documents whose titles or body text contain the search terms. The search engine does not search for the query words in the metadata, anchors, or URLs.

Also see the intext: search operator.

Typing allintext:f5 support in the search box returns only documents that have both f5 and support in the title or body text of the document.

allinurl:

Restricts the search to documents whose URL contains the search terms. The search operator does not require the query words to be adjacent to each other in the document, nor does it require the words to appear in a particular order in the document.

The search operator works on words in the URL, not URL components such as punctuation. For example, slashes ( / ) are ignored.

Also see the inurl: search operator.

Typing allinurl:kb en-us in the search box returns only documents that have both kb and en-us in the URL.

Typing allinurl:kb/en-us in the search box returns the same documents as the previous example. The slash in the search term is ignored.

filetype:

Restricts the search to specific file types, such as Excel spreadsheets, PDF files, or Word documents. Type the filetype: operator followed by the file extension.

Typing big-ip filetype:pdf in the search box returns PDF files that contain the word BIG-IP.

intext:

Restricts the search to documents that contain the search word in the titles or body text of the documents. The search engine does not search for the query word in the metadata, anchors, or URLs.

Putting intext: in front of every word in your query is equivalent to putting allintext: at the front of your query.

Typing intext:f5 returns documents that mention the word f5 in their title or body text.

Typing intext:f5 intext:support in the search box is the same as typing allintext: f5 support.

intitle:

Restricts the search to documents that contain the search word in the HTML title.

Putting intitle: in front of every word in your query is equivalent to putting allintitle: at the front of your query.

Typing intitle:f5 support returns documents that mention the word f5 in their HTML title, and mention the word support in the title, body text, anchor, or anywhere else in the document.

Typing intitle:f5 intitle:support in the search box is the same as typing allintitle:f5 support.

inurl:

Restricts the search to documents that contain the search word in the URL. This operator works on words, not URL components such as punctuation. For example, slashes ( / ) are ignored.

Putting the inurl: operator in front of every word in your query is equivalent to putting allinurl: at the front of your query.

Typing inurl:kb support in the search box returns documents that contain the word kb in their URL and mention the word support in the URL, body text, title, or anywhere else in the document.

Typing inurl:kb inurl:solutions in the search box returns documents that contain both kb and solutions in the URL. It returns the same documents as the search query allinurl:kb solutions.

 

Known issues with search

AskF5 search is affected by the following known issue:

Date ranges displayed in the Filter Search Results panel may display the wrong results count. For example, the Past Year date range may display eight results; however, when you click Past Year, the search may return 24 results.

Important: This is a cosmetic issue; the correct search results are returned for the selected date range.