From: ying c (bf5tgh1@yahoo.com)
Date: Sun Oct 13 2002 - 12:20:34 GMT-3
Hi,
I have only limited access to 3550 and wondering if
anyone experience this before. The topology is like
below:
R1--vlan 10--3550--vlan 20--R2
||
||trunk (allowed only vlan 10,20)
||
R3 (fa0.1 in vlan 10, fa0.2 in vlan 20)
R1, 3550 mgmt interface and R3 are in vlan 10
R2, and R3 are in vlan 20
There are 6 other routers connected to R1 and R2 which
is my core network.
The problem I experienced is that some routers failed
to ping 3550's mgmt interface although there's no
problem to reach vlan 10 from any router. Af first I
though it probably has something to do with the
port-security I put on the trunk port, so I took it
out, and it enables one of the router be able to ping
to it, but still two routers still did not go through.
I then ping to R3's vlan 10 interface address, that
fixed the problem. I don't remember I ever have to do
this on a Cat5k or 2900xl and wondering if this is
3550 only problem.
Another interesting thing I experienced has to do with
mac access-list that is supposed to be able to filter
mac address, it did not seem to work if the mac
address already in the arp cache, once you clear
cache, it seemed work except for specific host to host
mac filter.
Any feedback is appreciated.
Thanks,
Chang
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