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1 May 2000
These release notes support Cisco LocalDirector Version 3.3 up to and including Release 3.3.1.
These release notes describe the following topics:
The following sections list the new features supported by the Cisco LocalDirector Version 3.3.
The dynamic-feedback-agent command and the dynamic-feedback-agent-ip command have been added to LocalDirector Release 3.3.1 so that Cisco Systems DistributedDirectors can download availability information on virtual servers from a LocalDirector. DistributedDirectors can use this information to identify load imbalances over multiple sites and distribute Internet traffic more evenly. The process is performed by a Dynamic Feedback Protocol (DFP) manager on the DistributedDirector and a DFP agent on the LocalDirector. The DFP agent calculates an availability metric for specified virtual servers, and the DFP manager uses the metrics to make load distribution decisions.
The dyanamic-feedback-agent command enables listening for IP connection requests from DFP managers. If listening has not been enabled, LocalDirector does not honor the connection request.
[no] dynamic-feedback-agent [port]localdirector(config)# dynamic-feedback-agent
localdirector(config)# show dynamic-feedback-agent
dynamic-feedback-agent 8080
The optional port parameter specifies the TCP port. The default port is 8080. The no-dynamic-feedback-agent command disables listening and closes any current DFP connections.
The dynamic-feedback-agent-ip command specifies DFP manager hosts (DistributedDirectors) that may connect to a LocalDirector for DFP communications. If the IP address has not been specified, LocalDirector will not honor the connection request. You can enter up to 256 IP addresses. Localdirector can support up to 256 connections at one time.
[no] dynamic-feedback-agent-ip ip [password]localdirector(config)# dynamic-feedback-agent-ip 10.10.10.200
localdirector(config)# show dynamic-feedback-agent-ip
dynamic-feedback-agent-ip 10.10.10.200
The ip parameter specifies the IP address of the host. The optional password parameter enables security (MD5 encryption) and specifies the security password for the connection. The no-dynamic-feedback-agent-ip command removes an IP address (and closes the connection if one for that IP address is currently open). If the password option has been specified, you must include it in a command to remove an IP address.
The cookie-insert and cookie-passive options have been added to the sticky command to enable sticky connections based on a cookie in the HTTP GET request.
The sticky connection for the cookie-insert option relies on a cookie created by LocalDirector. The sticky connection for the cookie-passive option relies on a cookie created by the sticky real server.
[no] sticky virtual_id minutes [generic | ssl | cookie-insert [name] [domain] | cookie-passive name]ld(config) 10# virtual 192.168.1.1:444:0:tcp
ld(config) 11# virtual 192.168.1.1:445:0:tcp
ld(config) 12# sticky 192.168.1.1:444:0:tcp 100 cookie-insert LDcookie
ld(config) 13# sticky 192.168.1.1:444:0:tcp 1000 cookie-passive mycookie
ld(config) 14# show sticky
Virtual Machine(s) Sticky
192.168.1.1:445:0:tcp 1000 cookie-passive mycookie
192.168.1.1:444:0:tcp 100 cookie-insert LDcookie
The sticky real server association is based on the IP address of the virtual server specified by the virtual_id parameter. Cookie-insert adds the minutes value to the LocalDirector clock time (set by the clock set command described below) to calculate the date in the future when the association expires. Using the optional name and domain parameters for cookie-insert, you can enter your own cookie value and domain name (which you may find useful for tracking purposes). If you do not enter a cookie name, the default value is LocalDirector-Insert-Cookie (there is no default domain name). Cookie-passive requires you to enter a name parameter. It is a keyword used by LocalDirector to identify packets from the sticky real server. The name is limited to 128 bytes. If you enter a name that is greater than 128 bytes, LocalDirector ignores the extra bytes.
The syntax for clear sticky and show sticky has changed. You can now clear or show sticky associations per the virtual server or the real server.
clear | show sticky [virtual | real] [virtual_id | real_id]If you select the virtual keyword, you must follow it with the virtual_id parameter (the virtual server IP address or name, port number, bind-id, and protocol). If you select the real keyword, you must follow it with the real_id parameter (the IP address or name of the real server, port number, bind-id, and protocol).
Use the clock set command to set the date and time for LocalDirector. You must enter the Coordinated Universal Time (UTC) which is the international time standard used by LocalDirector. You can not disable the clock.
clock set hh:mm:ss month day yearlocaldirector(config)# clock set 17:00:00 march 21 2000
localdirector(config)# show clock set
Tues 17:00:04 Mar 21 2000 UTC
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Warning You must set the date and time accurately if you are using the cookie-insert option of the sticky command. |
The following list contains important notes about the Cisco LocalDirector Version 3.3.
| Content Verification System (CVS) Version Number | LocalDirector Version Number |
CVS Version 3.1.x | LocalDirector Version 3.1.x |
CVS Version 3.2.x | LocalDirector Version 3.2.x |
CVS Version 3.3.x | LocalDirector Version 3.3.x |
| Browser | Apache Web Server | IIS Web Server |
|---|---|---|
Netscape Navigator | Works | Works |
Opera | Works | Works |
Microsoft Internet Explorer | Works | Works if SSL Version 2 is turned off. Refer to CSCdm46555 Release Note or Microsoft customer service document Q187498 for instructions. |
[time_value{s|m}] (Optional) The amount of time before LocalDirector reverts to the static weight. An s for seconds or an m for minutes appended to the time_value input determines the time denomination. The default input time denomination is minutes.
Caveats describe unexpected behavior in Cisco LocalDirector 3.3. This section contains open and resolved caveats for Cisco LocalDirector Version 3.3.
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Warning If two servers have the same cookie name and value, the client sessions do not stick with one particular server. |
This section describes possible unexpected behavior in Cisco LocalDirector Release 3.3.1.
All the caveats listed in this section are resolved in Cisco LocalDirector Release 3.3.1.
The following documents are specific to Cisco LocalDirector Version 3.3 and are located on Cisco Connection Online and the Documentation CD-ROM.
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Note The Gigabit Ethernet network interface cards are used only on LocalDirector hardware platform Models 420 and 430. |
The following documents are specific to Cisco LocalDirector Version 3.3 and are located on CCO and the Documentation CD-ROM:
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Posted: Wed May 10 15:53:54 PDT 2000
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