RSPAN Config Mulitple Switches

Unanswered Question
Jul 3rd, 2007

Hello,

Quick answer from you fellas.

Switch A - 6509 - Sup720 - Advanced IP

Switch B - 3550 12G - Advanced IP

Switch C - 3550 12G - Advanced IP

Switch A has the sniffer on gi7/2 and 2 vlans I would like to monitor

Switch B has 1 Vlans I would like to monitor

Switch C has 1 Vlans I would like to monitor

Switch C connects to Switch B then Switch B Connects to Switch A.

Looking at the 3550 RSPAN I "think" i may have figure it out but am not quite sure and am a little Leary about placing this in production. Any ideas would be greatly appreciated!

B1Cisco3550 <SWITCH C>

!

vlan 901

remote span

name REMOTE_SPAN

!

monitor session 1 source vlan 101 rx

monitor session 1 desintation remote vlan 901 reflector-port gi0/10

!

int gi0/10

description UPLINK-B3CISCO3550-RSPAN-LINK

switchport trunk encapsulation dot1q

switchport mode trunk

switchport trunk allowed vlan 901

B3Cisco3550 <SWITCH B>

!

vlan 901

remote span

name REMOTE_SPAN

!

monitor session 1 source vlan 103 rx

monitor session 1 destination remote vlan 901 reflector-port gi0/9

!

int gi0/10

description UPLINK-B1CISCO3550-RSPAN-LINK

switchport trunk encapsulation dot1q

switchport mode trunk

switchport trunk allowed vlan 901

!

int gi0/9

description UPLINK-B5CISCO6509-RSPAN-LINK

switchport trunk encapsulation dot1q

switchport mode trunk

switchport trunk allowed vlan 901

B5Cisco6509 <SWITCH A>

!

vlan 901

remote span

name REMOTE_SPAN

!

vlan 105

name BUILDING_5_NET

!

vlan 117

name ENG_DEV_NET

!

monitor session 1 source remote vlan 901

monitor session 1 source vlan 105 rx

monitor session 1 source vlan 117 rx

monitor session 1 desination interface gi7/2

!

int gi0/9

description UPLINK-B3CISCO3550

switchport trunk encapsulation dot1q

switchport mode trunk

switchport trunk allowed vlan 901

I have this problem too.
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bmahaffey-pelco Thu, 07/12/2007 - 21:38

Well I figured it out there are some mis-configs above. Like the 3550 you have to burn the reflector-port. Meaning you cannot use it. :)

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