Solved

mirror ports

Posted on 2014-03-12
3
298 Views
Last Modified: 2014-04-09
I need to mirrors 3 ports, 2 on sw1 and the other one on sw2. The system that monitors the ports is on sw1. This is all Cisco Catalyst 3750.
I have no problem to mirror the 2 ports on sw1 and send it to the port destination (fa0/1) where the monitor system is. I am not sure how to mirror the port on sw2 to sw1 (fa0/1). Any thoughts would be greatly appreciated.
0
Comment
Question by:leblanc
3 Comments
 
LVL 17

Accepted Solution

by:
lruiz52 earned 250 total points
ID: 39925570
For sw2 to sw1 you can try RSPAN you can check link below for more info.

https://supportforums.cisco.com/document/139236/understanding-spanrspanand-erspan
0
 
LVL 12

Assisted Solution

by:Infamus
Infamus earned 250 total points
ID: 39929994
In order to configure RSPAN, you need to create RSPAN vlan and it has to be lower than vlan # 1005.

For example;

config t
vlan 300
remote span
end

Switch2
monitor session 1 source interface fax/x rx
monitor session 1 destination remote vlan 300
end

Switch1
monitor session 1 source remote vlan 300
monitor session 1 destination interface fa0/1
end

Also all of the conditions below must met.

1.The RSPAN VLAN should be allowed in ALL trunks between the involved switches (Source and Destination switches in this case);


2.If you have enabled "pruning" in your network, remove the RSPAN VLAN from the pruning, with the command: switchport trunk pruning vlan remove <RSPAN VLAN ID> under the interface configure as trunk;
0
 
LVL 1

Author Comment

by:leblanc
ID: 39930852
I have 2 ports on sw1 that need to be mirrored to fa0/1 as well. I guess the only way to do it is to get monitor session 2... Correct?


According to the Cisco TAC, you cannot have the same destination for different span session. So the below is not possible. Is that true?

sw1:
monitor session 1 source remote vlan 500
monitor session 1 destination interface fa0/1
monitor session 2 source fa0/10,fa0/20
monitor session 2 destination interface fa0/1
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Join Greg Farro and Ethan Banks from Packet Pushers (http://packetpushers.net/podcast/podcasts/pq-show-93-smart-network-monitoring-paessler-sponsored/) and Greg Ross from Paessler (https://www.paessler.com/prtg) for a discussion about smart network …
Most of the applications these days are on Cloud. Cloud is ubiquitous with many service providers in the market. Since it has many benefits such as cost reduction, software updates, remote access, disaster recovery and much more.
Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually. After setting up a router, find the network security…
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…

863 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

23 Experts available now in Live!

Get 1:1 Help Now