CMTS uBR10k with redundant wan interfaces

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Jun 5th, 2008
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I have a config question for those who's working with the uBR10k.

I have a 10k with 2x wan uplink cards (ESR-HH-1GE) GigabitEthernet3/0/0 and


Those links are connected to 2x cat2960G (.1Q trunk between them) where each

c2960 has an ASA5520 connected, running active/passive failover-mode.

What i would like to do is to make L2 redundans from the 10k to the ASA(s).

I have multi vrf and vlans (subinterfaces, because 10k doesnt support vlan

interface) on the 10k.

Is this possible at all or do i have to create a subinterface on each

Ge-interface (per vlan), in that vlan & vpn, create 2 interfaces on the ASA

(per vlan), in that and then do some dynamic L3 routing ? (i hope not, this

will almost x2 my ASA config) :-(



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amritpatek Wed, 06/11/2008 - 06:26
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The uBR10K is the way to go if they want a fully redundant configuration.You will need a uBR10K with a 1+1 MC5x20 configuration (one for supporting the customer traffic, with a second one as a backup). In addition, you will need the following components in dual-redundant configuration: PREs, Gig Es, Power supplies and TCC+ cards.


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