02-12-2006 11:06 PM - edited 03-03-2019 01:48 AM
Hi,
I have a requirement to mirror all the ports on my 7 CISCO 3750 switches, which are in 3 separate stacks, to one single Gigabyte Ethernet port.
Does anyone know how I can do that?
Thanks in advance.
02-13-2006 06:33 AM
You need to configure RSPAN (remote span ) on all 7 CISCO switches.
check the sample config:
vlan 999
remote-span
monitor session 1 source interface fastethernet 1/1 both
monitor session 1 destination remote vlan 999
Catalyst B
vlan 999
remote-span
Catalyst C
vlan 999
remote-span
monitor session 1 source remote vlan 999
monitor session 1 destination interface fastethernet 4/48
Check the link:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/122sx/swcg/span.htm#wp1059942
Please rate me dont hate me;
Regards,
vlad
02-14-2006 04:28 PM
Vlad, thanks a heap for your response.
I want to apply to my sitation. Please let me know if I get them right in the following:
Catalyst A
vlan 901
remote-span
monitor session 1 source interface fastethernet 1-48 (I want to monitor all ports on the CISCO 3725)
monitor session 1 destination remote vlan 901
Catalyst B
vlan 901
remote-span (If I don't need to monitor this switch, do I still need to put anything into this switch at all?)
Catalyst C
vlan 901
remote-span
monitor session 1 source interface fastethernet 1-48 (I want to monitor all ports on this switch as well)
monitor session 1 source remote vlan 901
monitor session 1 destination interface gigabitethernet 3 (There are 4 Gigabit Ethernet Uplink in CISCO 3750, I want all the traffic to go to port 3, is this the right way to do?)
Thanks in advance.
02-14-2006 06:05 PM
Hello Blue,
You need to configure the vlan in every device that passes this traffic. If Cat B is in the middle (A-B-C), you'll need to configure the vlan there.
and dont forget about the options [in out both] to make sure you'll get the traffic you need.
And I believe to specify the range you need to do something lik
fasthernet 0/1 - 48
By the way, rate me , I'd be glad.
Vlads
02-13-2006 06:41 AM
You are probably going to overrun the port if you span 7 complete switches into one port and any statistics or whatever you are collecting will be inaccurate .
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