Solved

Cisco 7000 Span Port

Posted on 2011-09-20
3
586 Views
Last Modified: 2012-05-12
Hi all,
I have a question regarding Spanports on a Cisco 7000. How many ports can be used for this purpose?  

Thanks.
0
Comment
Question by:NYGiantsFan
  • 2
3 Comments
 
LVL 18

Expert Comment

by:jmeggers
ID: 36569457
You're talking about the Nexus 7000, I assume.  Still limited to two concurrently active, but you can have up to 48 sessions configured, most will be shutdown.

See  http://www.cisco.com/en/US/products/ps9402/products_configuration_example09186a0080b8253b.shtml
0
 

Author Comment

by:NYGiantsFan
ID: 36573605
Yes, Nexus 7000.  Sorry, I am not a switch/Cisco person.  Are you saying that we can have two ports spanning.  What do you mean 48 sessions configured?

The problem I am trying solve is when I attempt to send all traffic through a spanport and the spanport is dropping packets.

I am wondering if it would be possible to send 1/2 of the traffic to one port and 1/2 of the traffic to another spanport?  Thanks.



0
 
LVL 18

Accepted Solution

by:
jmeggers earned 500 total points
ID: 36574007
When you configure SPAN on a regular IOS switch, it's typically like:

monitor session 1 source VLAN 10
monitor session 1 destination interface fastethernet 0/48

I sent you the link to the Nexus SPAN documentation.  On the Nexus you can configure up to 48 of these monitoring sessions, but the syntax is different:

Destination port configuration:

interface ethernet 3/48
 switchport
 switchport monitor
 no shut

Session configuration:

monitor session 1
 source interface ethernet 3/11 both
 destination interface ethernet 3/48
 no shut

The "no shut" command can also be a "shut" command to disable the session.  So out of the 48 sessions you can configure, only two of them can be active at any one time.

I don't know of any way you can split the traffic.  It's not surprising on a switch with the kind of throughput capability as the N7k you might run into interface limitations.  What kind of interface are you using as your destination?  Is a faster one available?
0

Featured Post

How your wiki can always stay up-to-date

Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
- Increase transparency
- Onboard new hires faster
- Access from mobile/offline

Join & Write a Comment

Article by: IanTh
Hi Guys After a whole weekend getting wake on lan over the internet working, I thought I would share the experience. Your firewall has to have a port forward for port 9 udp to your local broadcast x.x.x.255 but if that doesnt work, do it to a …
When it comes to security, there are always trade-offs between security and convenience/ease of administration. This article examines some of the main pros and cons of using key authentication vs password authentication for hosting an SFTP server.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…

759 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

21 Experts available now in Live!

Get 1:1 Help Now