Wired Intelligent Edge

Hi

I am setting up 2 * 8100 switches to replace an existing core switch. The 8100 switches will have VSX configured and each switch will have dual links downstream to access switches and upstream to the WAN routers. Connections to the access switches are via trunk ports and the connections to the WAN use OSPF for the routing.

I am new to VSX, so I'm going through some testing before installing them in to production. One of the tests I am trying to do is to confirm if one of the 8100 core switches loses it's WAN connection then can a client device will still be able to route out to the WAN via the ISL link. A rough topology is below.

Essentially, from the PC client, I want to be able to ping a server on the WAN2 router. From what I have read, this should be feasible to achieve but I'm having trouble with it. Could anyone confirm if this is possible or not?

WAN1 Router ---- WAN2 Router
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CORE1 - 8100 switch
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ISL LINK
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CORE2 - 8100 switch
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Tagged VLAN 104
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ACCESS1 Switch
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PC Client on VLAN 104

Many Thanks
Roy

Yes, this is achieved by using a transit L3 VLAN interface between primary and secondary on which OSPF or BGP will carry WAN routes.
I suggest to browse through the VSX config best practices doc that might help in many scenarios:

P62 (transit VLAN 4)

https://support.hpe.com/hpesc/public/docDisplay?docId=a00094242en_us&docLocale=en_US

Hi Vincent

I just found the best practice document and and scenario #1 is exactly what I'm trying to implement. Once I went through it, I realised the transit vlan was exactly what was needed. Thanks for the confirmation. 

Many Thanks