Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Monitoring traffic between UCS fabric extenders and fabric interconnect?

What is the best way to monitor the traffic between UCS fabric extenders (chassis) and fabric interconnect? Specifically I am looking for parameters to keep an eye on to determine when we may need to move from 2 links per fabric extender to 4 to handle greater IO needs.

Thanks.

- Klaus

1 REPLY
Cisco Employee

Re: Monitoring traffic between UCS fabric extenders and fabric i

One way you could monitor usage is by looking at the interface stats just as you would for any switch uplink.

Connect to the Cluster CLI

connect NXOS

Look at the input/output rate of your Server Uplink interfaces.

In my example I'm using fixed ports 1 through 4 on my FI's connecting to the IOM of the Chassis.


UCS-A(nxos)# show int eth1/1-4 | include rate
  30 seconds input rate 17114328 bits/sec, 1089 packets/sec
  30 seconds output rate 8777736 bits/sec, 693 packets/sec
    input rate 5.07 Mbps, 198 pps; output rate 1.03 Mbps, 99 pps
  30 seconds input rate 2376 bits/sec, 0 packets/sec
  30 seconds output rate 1584 bits/sec, 2 packets/sec
    input rate 1.58 Kbps, 0 pps; output rate 1.58 Kbps, 3 pps
  30 seconds input rate 2376 bits/sec, 0 packets/sec
  30 seconds output rate 31680 bits/sec, 20 packets/sec
    input rate 1.58 Kbps, 0 pps; output rate 30.89 Kbps, 18 pps
  30 seconds input rate 2376 bits/sec, 0 packets/sec
  30 seconds output rate 1584 bits/sec, 1 packets/sec
    input rate 1.58 Kbps, 0 pps; output rate 1.58 Kbps, 3 pps

If you notice your two links pushing near 10G consistently, it might be time to add another 2 link.

Other than this you can use SNMP to log the stats and look based on daily/weekly/monthly usage.

Robert

1055
Views
0
Helpful
1
Replies
CreatePlease login to create content