From: Ronnie Royston (RonnieR@xxxxxxxxxxxxxxxxx)
Date: Sat Mar 03 2001 - 20:32:14 GMT-3
To restrict vlan traffic on a trunk:
You can set each cat as VTP server in same domain, set a fast or gig E
interface to trunk on each cat and "clear trunk 10" to stop vlan 10 traffic,
for example, from being carried over the trunk.
You could also put each cat in its own VTP domain and vlan info/traffic
would not be shared, only vlans that are manually configured are trunked
across.
For conditional transmission of a paricular vlans traffic:
You could manipulate the root bridge for a particular vlan, for example vlan
2, so that the link between a couple of cat's is in the blocking state
unless there is a loss of connectivity somewhere between cat 2 and the root
bridge elsewhere in the network. This is the only way that I know of to
conditionally allow a particular vlans traffic to pass a particular link.
Hope that helps.
-Ron
VTP is what you want to look at, I believe. You can put each cat in it's
own VTP domain, and they will share vlans if manually configured to have
them, but not dynamically if a vlan is configured on only one. For example,
you could have cat 1 in domain ONE and cat 2 in domain TWO and have vlan 2
configured in ony domain 2. However, to get vlan 2 traffic to be trunked
across domain ONE, you've gotta have vlan 2 manually configured on cat 1. I
don't believe dynamic
-----Original Message-----
From: David FAHED
To: ccielab@groupstudy.com
Sent: 3/3/01 10:34 AM
Subject: Catalyst question - off topic
Hi,
How can I prevent to advertise a VLAN on trunk port?
My problem :
Catalyst 1-------------Trunk 1-----------------catalyst 2
--------------Trunk2------------------
I want to filter some VLAN on the trunk 1. For example I don't want
VLAN2 go
on the trunk 1 but go with trunk2. If trunk2 go down I want that trunk1
let
pass VLAN2.
I think it is possible but I don't know how.
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:29:19 GMT-3