[f-nsp] egress queue drops

[Jared Valentine]

If you're not leveraging any QoS (and from the looks of your "show int" it
doesn't look like it), then you could add "buffer-sharing-full" in the
global config.  That will release the buffers that are reserved for queues
1-7 and make them available to queue0, which is where all of your traffic
currently is today.  

If you are leveraging QoS, or plan on doing so in the near-term, then you'll
probably need to be a little more selective about reallocating your buffers
using specific "qd" commands instead.  

Jared Valentine
hidden at xmission.com

-----Original Message-----
From: foundry-nsp-bounces at puck.nether.net
[mailto:foundry-nsp-bounces at puck.nether.net] On Behalf Of Frederic Jaeckel
Sent: Thursday, January 13, 2011 9:18 AM
To: foundry-nsp
Subject: [f-nsp] egress queue drops

Hej,

I'm having a few FCX switches which display egress drops in the interface
statistics.

I'm curious how I can fix that and if I can fix that. The mentioned thing
happens on every port of the switch and at most on the uplink ports. I set
the symmetric flow control like that:
	symmetric-flow-control set 1 buffers 320

and the error still occurs.

Maybe someone has a hunch or knows the problem? Would be nice if I could fix
that.


> #show int e 1/1/1
> GigabitEthernet1/1/1 is up, line protocol is up 
>   Hardware is GigabitEthernet, address is 0024.3877.9c40 (bia
0024.3877.9c40)
>   Configured speed auto, actual 1Gbit, configured duplex fdx, actual fdx
>   Configured mdi mode AUTO, actual none
>   Member of 5 L2 VLANs, port is tagged, port state is FORWARDING
>   BPDU guard is Disabled, ROOT protect is Disabled
>   Link Error Dampening is Disabled
>   STP configured to ON, priority is level0, mac-learning is enabled
>   Flow Control is config enabled, oper enabled, negotiation disabled
>   mirror disabled, monitor disabled
>   Not member of any active trunks
>   Not member of any configured trunks
>   No port name
>   Inter-Packet Gap (IPG) is 96 bit times
>   IP MTU 1500 bytes
>   300 second input rate: 136526024 bits/sec, 41720 packets/sec, 14.31%
utilization
>   300 second output rate: 355122840 bits/sec, 55045 packets/sec, 36.38%
utilization
>   7038712 packets input, 2873484976 bytes, 0 no buffer
>   Received 8 broadcasts, 1101 multicasts, 7037603 unicasts
>   0 input errors, 0 CRC, 0 frame, 0 ignored
>   0 runts, 0 giants
>   9327790 packets output, 7548747686 bytes, 0 underruns
>   Transmitted 16 broadcasts, 7630 multicasts, 9320144 unicasts
>   0 output errors, 0 collisions
>   Relay Agent Information option: Disabled
> 
> Egress queues:
> Queue counters    Queued packets    Dropped Packets
>     0             9327946                1356
>     1                   0                   0
>     2                   0                   0
>     3                   0                   0
>     4                   0                   0
>     5                   0                   0
>     6                   0                   0
>     7                   0                   0

best regards,
Frederic Jaeckel