From: MOLINA, MARTIN J (PBI) (mm1343@sbc.com)
Date: Wed Dec 04 2002 - 03:32:22 GMT-3
Hello,
About 33% of the responses suggested bit swapping, 33% suggested no bit
swapping and 33% suggested something in between. I set up a DLSW peer
between 2 routers. I used a sample config from www.6colabs.com where you can
use 2 routers on both sides of your peering to establish an actual DLSW
circuit (pretty cool) and I discovered what 33% of the people who responded
already knew. The sh dlsw reachability mac addresses for the hosts are
indeed bit swapped as they traverse the DLSW peering. Therefore, I will be
bit-swapping mac addresses for my DLSW ICANREACH/ICANNOTREACH statements in
the future based on this test. It makes sense that proper filtering relies
on using a format that the DLSW peer understands. Can you get away with not
bit-swapping? I don't know but I will be bit-swapping until I hear a solid
argument on why you wouldn't have to. Thanks for your responses.
Martin Molina
Senior Network Engineer
SBC (Pacific Bell) Internet Services
CCNP CCDP
desk: (925) 973-7774
cell: (925) 216-5299
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