07-10-2009 10:03 AM
I am getting up to speed the ACE module and seeing lots of cases where an alias is configured on both, the client and server side vlan interfaces. Is this a requirement?
Thanks..
07-10-2009 11:31 AM
The alias command is like HSRP in the MFSC. This way, you will be able to reach your ACE context even if your primary ACE module fails.
07-10-2009 01:28 PM
Thnx for your response. I can see how the alias concept would come in to play when configuring a fault tolerant vlan as part of the redundancy. Is it also commonly used for a vlan int on the ACE?
Thanks again
07-12-2009 11:16 PM
Hi,
Yes it is. If you have a pair of ACEs in routed mode, you should use aliases on your VLAN interfaces.
This VLAN address should then be used by your servers as default-gateway on the server side, and as next-hop for you upstream routers on client-side.
This way, if the primary ACE fails, the next-hop address and default-gateway of your upstream routers and servers don't have to be changed because the IP Address remains the same.
Take a look at following doc for configuration guidelines: http://www.cisco.com/en/US/docs/interfaces_modules/services_modules/ace/v3.00_A1/configuration/rtg_brdg/guide/vlansif.html#wp1034811
HTH,
Dario
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