ISDN backup connectivity

Unanswered Question
Feb 26th, 2009
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We have a new ISDN router Cisco 3845 connecting to Cisco 7600 Leased line router.We would like to use ISDN as backup.I have attached the network diagram.

Challenges:Cisco 3845 doen't support vlan creation & 7600 doesn't support bridging.


1.Referring to diagram, what is the best way to configure interface A&B and C&D.Is it better to create an L3 port-channel ?

2.Is it possible to create bridge in 3845 (interface B) & assign an ip address.Then create L3 vlan x in 7600 & assign interface A into vlan x ?

2.How the routing will take place when the Leased line will go down ?


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paolo bevilacqua Fri, 02/27/2009 - 03:09
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sachin_mon Fri, 02/27/2009 - 12:03
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There is a small change in the queries.Thats the reason of duplication.



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