Dear all, current we have a very simple RSPAN problem:
The topology is as simple as:
SW1 --- SW2
The configuration is also very simple
SW1:
!
interface GigabitEthernet3/12
description TO SW2
logging event link-status
logging event bundle-status
logging event trunk-status
wrr-queue cos-map 1 1 1
wrr-queue cos-map 2 1 0 2 4 6 7
priority-queue cos-map 1 3 5
rcv-queue cos-map 1 2 2
mls qos trust dscp
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1-802,804-4094
switchport mode trunk
!
interface GigabitEthernet5/1
switchport
switchport access vlan 812
channel-group 3 mode on
!
interface GigabitEthernet5/2
switchport
switchport access vlan 812
channel-group 3 mode on
!
interface Port-channel3
switchport
switchport access vlan 812
!
(truncated)
monitor session 1 destination interface Fa0/30
monitor session 1 source remote vlan 921
!
SW2
interface FastEthernet0/30
description Spare IT point ER1 I/O 857 (Cubicle A6)
switchport access vlan 200
switchport mode access
ip access-group DHCP-GUARD in
no logging event link-status
service-policy input limit-ping
spanning-tree portfast
spanning-tree guard root
!
interface GigabitEthernet0/2
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1-802,804-4094
switchport mode trunk
mls qos trust dscp
wrr-queue cos-map 1 1
wrr-queue cos-map 2 0
wrr-queue cos-map 3 2 4 6 7
wrr-queue cos-map 4 3 5
priority-queue out
!
monitor session 1 destination interface Fa0/30
monitor session 1 source remote vlan 921
Link Po3 and Vlan 812 are both showing up and there are data pass through data and a sniffer is able to see those data when connected to SW2 F0/30
But when the following commands are entered:
!
int range g5/1 - 2
mls qos trust dscp
int po3
mls qos trust dscp
!
end
The data from Po3 suddenly disappeared from SW2 F0/30, and all the broadcast data from VLAN200 start to appear in that. Does anyone have any idea on this? Please advise, thanks.
