RSPAN Configuration

[Enrico Abello]

Hello guys, I need your help. I have 5 switches cisco CBS 350-POE.

I have to configure the RSPAN to monitor all the vlans (1,10,20,110,200) on all the switches. The switches are A - B - C - D - E and are connected in this way:

configuration on A - B - C

SWC#show run | begin monitor
monitor session 1 destination remote vlan 90 reflector-port GigabitEthernet1/0/21 network
monitor session 1 source vlan 1
monitor session 1 source vlan 10
monitor session 1 source vlan 20
monitor session 1 source vlan 100
monitor session 1 source vlan 110
monitor session 1 source vlan 168
monitor session 1 source vlan 200

On switch D can i add locals vlan 1 20 ... to RSPAN vlan 90 and send all traffic to the switch E?

Configuration on D

monitor session 1 source vlan 1
monitor session 1 source vlan 10
monitor session 1 source vlan 20
monitor session 1 source vlan 100
monitor session 1 source vlan 110
monitor session 1 source vlan 168
monitor session 1 source vlan 200

if i try to add these vlans on RSPAN with command

monitor session 1 destination remote vlan 90 reflector-port GigabitEthernet1/0/21 network

i lose the monitoring on previous switches. My goal is to monitor all traffics on all the switches and connect on port GE21 on switch E to the monitoring device. Is it possible?

Thanks for you help.

[balaji.bandi]

Can you post the configuration of gi1/0/21 Switch D and what configuration applied in Switch E

below guideline for reference :

https://www.cisco.com/c/en/us/td/docs/switches/lan/csbms/CBS_250_350/CLI/cbs-250-cli/span-and-rspan-commands.html

[Enrico Abello]

Hi Balaji, the switches A - B and C are connected to the switch D (on ports 22 , 23, 24) which is connected to switch E on port 20

The configuration is

interface GigabitEthernet1/0/20
switchport mode trunk
!
interface GigabitEthernet1/0/22
switchport mode trunk
!
interface GigabitEthernet1/0/23
switchport mode trunk
!
interface GigabitEthernet1/0/24
switchport mode trunk
!

The switch E is connected to the switch D on port 46 and the monitoring device is connected to switch E on port 45

interface GigabitEthernet1/0/45
switchport mode trunk
switchport trunk allowed vlan 1-89,91-4094
!
interface GigabitEthernet1/0/46
switchport mode trunk
!
monitor session 2 destination interface GigabitEthernet1/0/45 network
monitor session 2 source remote vlan 90

In this way I can see all traffic on the switches A - B - C. How can I do to monitor traffic on the switches D and E on same port too? (GE45) (in the first post i wrote GE21.. it's changed, but the problem is the same)

Thanks.