IP PRISMA and tagging

Unanswered Question
Jun 17th, 2008
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Dear All,



I have a network consists of 4 sites, kindly see the attached drawing.


The four site connected to each other using SDH network.


But the problem is that from the Catalyst 6500/FWSM side the WAN is appears as a shared single subnet. And for example to reach site C from A. I don't know which path is used.


Is it possible to redesign this network so that I can control the traffic on the ring and perform load balancing.


I am thinking to implement a new catalyst switches between the FWSM and the IP Prisma in each site and configure a trunk link that tags two WAN VLANs; so that for example from Site A will be two logical interfaces one for site B and one for site A.

Is the Prisma support this design? Or is there any other good idea?



Best regards





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Pavel Bykov Fri, 06/27/2008 - 03:12
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VLANs is a good idea for control, you can create L3 circuits instead of L2 circuits.


I'm not sure about IP PRISMA though :(


Normally on shared circuit the balancing/replication is done using L1 methods, so IP Prisma would be definitive in this case.

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