topic Re: WAAS Software Update in Application Networking

WAAS Software Update

ahteshamsoofi — Thu, 13 May 2010 19:13:39 GMT

Hello All,

I am trying to do a software update on my WAAS Central Manage (Version: 4.1.1c). However from the cisco docuemnetation I came across following please see the link ( http://www.cisco.com/en/US/docs/app_ntwk_services/waas/waas/v415/release/notes/ws415xrn.html#wp72524 ) .

I need your help for the following :

-> How can I take the WAAS devices offline so that I can do the Upgrades.( in this case the WAN will be working without the WAAS device).

-> Once the Upgrades have been completed How can I unable this WAAS devices again in production .

Thank in Advance for your help.

Soofi

Re: WAAS Software Update

Zach Seils — Thu, 13 May 2010 20:06:20 GMT

Hi Soofi,

The way you take a WAAS device out of service depends on the interception method you are using. For inline interception, you can shutdown the InlineGroup to put the interface in bypass operating mode. For WCCP interception, you can disable WCCP on the WAAS device with the config mode command no wccp version 2. Once you have completed the upgrade, you simply do the opposite (no shut the InlineGroup or re-enable WCCP) to bring the device back in service.

Remember to upgrade the Central Manager first, prior to upgrading any of the devices running as accelerators.

Regards,

Zach

Re: WAAS Software Update

ahteshamsoofi — Thu, 13 May 2010 21:04:46 GMT

Hi Zach :

Thanks a lot ,

-> Is there any way that I can check as to which service is in use " inline interception or WCCP "

-> While going down will be there any service disruption ?

-> Finally , Is there any changes that has to be made on " core switch " to which the WAAS is connected ?

Soofi

Re: WAAS Software Update

ahteshamsoofi — Thu, 13 May 2010 21:21:51 GMT

ooh Btw this might interest you as well or you have already seen this....

http://sharpesecurity.blogspot.com/2010/04/problems-with-microsoft-april-2010.html

http://www.networkworld.com/community/node/60611

Or if came across better solution please do let me know.

Thanks

Re: WAAS Software Update

Zach Seils — Thu, 13 May 2010 21:43:41 GMT

-> Is there any way that I can check as to which service is in use " inline interception or WCCP "

Under the Device Info in the Central Manager the Interception Method is listed.

-> While going down will be there any service disruption ?

For optimized connections, yes. When you put an InlineGroup into bypass operating mode, it stops intercepting traffic for optimization. Existing optimized connections will be reset.. WCCP does a better job of graceful shutdown. If there are optimized connections established, WCCP will start a timer and check at the expiration of that timer to see if the number of connections has decreased. If it has, the timer is reset, and the check is performed again when the timer expires. This continues until the number of connections is no longer decreasing, at which points the WCCP services are terminated and the remaining connections are reset.

-> Finally , Is there any changes that has to be made on " core switch " to which the WAAS is connected ?

No, there are not.

Regards,

Zach

Re: WAAS Software Update

Zach Seils — Thu, 13 May 2010 21:45:41 GMT

It's fixed in the 4.1.5f release. See the following thread:

https://supportforums.cisco.com/message/3069273#3069273

Zach

Re: WAAS Software Update

ahteshamsoofi — Thu, 13 May 2010 22:39:31 GMT

Zack Thanks for all the help ...

To confirm:

1. I will telnet on to the WAAS Manager thru CLI

2. log into the Config mode

3. Use the command " no wccp version 2 "

At this point of time the WAN traffic will not using the WAAS. However the user can still be able to use the services over WAN. Right ?

Soofi

Re: WAAS Software Update

Zach Seils — Thu, 13 May 2010 22:52:05 GMT

WCCP should be disabled on the devices running as "accelerators", not the Central Manager. Once WCCP has unregistered on the device, the router/switch that the WAAS device was running WCCP with wil forward traffic normally (as if WCCP was not enabled).

Regards,

Zach