The Outdiscards are on the 1G interface, but of course all the traffic
is coming from the 10G interface:
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize
OutDiscards
Gi0/1 0 0 0 0 0
0
Gi0/2 0 0 0 0 0
41356
Gi0/3 0 1 0 1 0
7168
Gi0/4 0 0 0 0 0
0
Gi0/5 0 0 0 0 0
0
Gi0/6 0 0 0 0 0
0
Gi0/7 0 0 0 0 0
0
Gi0/8 0 0 0 0 0
0
Gi0/9 0 0 0 0 0
0
Gi0/10 0 0 0 0 0
0
Here's about 30 seconds later:
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize
OutDiscards
Gi0/1 0 0 0 0 0
0
Gi0/2 0 0 0 0 0
41361
Gi0/3 0 1 0 1 0
7168
Gi0/4 0 0 0 0 0
0
Gi0/5 0 0 0 0 0
0
Gi0/6 0 0 0 0 0
0
Gi0/7 0 0 0 0 0
0
Gi0/8 0 0 0 0 0
0
Gi0/9 0 0 0 0 0
0
Gi0/10 0 0 0 0 0
0
G0/2 and G0/3 are both Cambium PTP820S links. They are going to be a
2+0 in a portchannel, but we are running them separately for now while
we test this issue. G0/3 is currently shut down. As you can see,
both are racking up OutDiscards. G0/1 is a 1G link to another
company's switch in the same building. Obviously no problems there.
Thanks!
Craig
Quoting Sterling Jacobson <sterl...@avative.net>:
Outdiscards ingress from the 10G to the 1Gig?
It might discard if it's overflowing the buffer on the 1Gbps
interface from the 10Gbps side.
That's not totally uncommon.
-----Original Message-----
From: Af [mailto:af-boun...@afmug.com] On Behalf Of Craig Baird
Sent: Thursday, April 14, 2016 2:28 PM
To: af@afmug.com
Subject: [AFMUG] Outdiscards on Cisco switch with PTP820S
I've got a Cisco ME3600X switch connected up to a pair of Cambium
PTP820S radios via gigabit fiber SFPs. I'm seeing significant
outdiscards, resulting in lost frames on the switch on both ports
going to the 820S radios. The links are not congested--generally
pushing less than 100 Mbps (80 MHz channels, capable of 650 Mbps).
I've got other 820S radios connected to the same model switch in
other places, and am not seeing this. The only difference is that
this switch is fed with 10 gig fiber. I'm wondering if it's a
queueing problem of some sort. Anybody have any ideas?
Craig
