[nsp] ATM Bridging to VLANs on 6500

[Robert A. Hayden]

Hey all,

I'm working to consolidate a bunch of WAN ATM connections into one box.  

Our backbone is all ethernet using 802.1Q VLANs for trunking and I have
about 14 T1s, 16 or so 56k links, and a variety of DS3 and OC3 ATM links,
and about 15 100mb and gig exchange connection that I need to connect into
the backbone at layer 2.  These are generally going to remote off-campus
buildings and the like, or so some remote sensing units around town that
connect via 56k connections.

I received the following configuration example as a way to do this pretty
easily using FlexWAN cards and PAs, but I wanted to toss it up here to
see if there are any performance caveats or any gotchas:

Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# interface ATM8/0/0
Router(config-if)# no ip address
Router(config-if)# atm bridge-enable
Router(config-if)# atm bridge-enable split-horizon
Router(config-if)# pvc 1/100
Routerconfig-if-atm-vc)# bridge-vlan 10
Router(config-if-atm-vc)# ^Z
Router# 

Thoughts?  My plan is to do this on a 6513 SupII/MSFCII (or possibly a
sup720) uplinking with etherchanneled Gig, or possibly a 10gb link.

Right now, everything comes in via a mish-mash of 2500s, legacy 7507s and 
other equipment in need of being chucked off the clocktower.  I want get 
it all more managable.

Thanks

- Robert