SPAN question

From: secondie (secondie@gmail.com)
Date: Mon Jul 31 2006 - 23:16:51 ART


Setup

I have switch1 and 2 connected via port 1with Q trunk configured (all
vlans allowed)
Switch 1 has router R1 connected to port 20.
Switch 2 has router R2 connected to port 20.

Every thing is on VLAN 20 and both routers can ping each other.

R1 -- SW1 -- fa0/1 -- trunk -- fa0/1 -- SW2 ---R2

I am trying to config span source as port 1 on sw1, destination on sw 1
is port 48

when I configure

monitor sess 1 source int fa 0/1
monitor sess 1 dest int fa 0/48
 
or

monitor session 1 source interface Fa0/1
monitor session 1 destination interface Fa0/48 ingress vlan 20

I can see ping on sniffer

but when I configure

monitor sess 1 source int fa 0/1
monitor sess 1 dest int fa 0/48 encap dot1q

or

monitor sess 1 source int fa 0/1
monitor sess 1 dest int fa 0/48 encap dot1q ingress vlan 20

FAILS ...... I see nothing on sniffer.

Any one see problem with this ?

How can I see dot1q tags on the traffic? Any scenarios?

TIA
-secondie



This archive was generated by hypermail 2.1.4 : Fri Sep 01 2006 - 15:41:55 ART