Solved: Over flow errors on Trunk port

mahesh18 · ‎10-22-2008

Hi all,

We have 6509 CatOS switch which has port 3/4 and 4/4 as Trunk Ports.

I did sh top util and found that trunk ports have over flow of 2977 and 18384

sh top util

Start Time: Oct 23 2008 01:00:50

End Time: Oct 23 2008 01:01:21

PortType: all

Metric: util

Port Band- Uti Bytes Pkts Bcst Mcst Error Over

width % (Tx + Rx) (Tx + Rx) (Tx + Rx) (Tx + Rx) (Rx) flow

----- ----- --- -------------------- ---------- ---------- ---------- ----- ----

3/4 1000 52 3828819509 4143556 107 87 0 2977

4/4 1000 52 3827944183 3871984 361 41 0 18384

4/10 1000 23 1682352358 2170815 0 22 0 0

4/9 1000 22 1684904158 1889195 0 24 0 0

3/10 1000 20 1496081772 1680064 0 43 0 0

3/9 1000 19 1413357924 1893167 0 40 0 0

4/1 1000 18 1321609045 1572700 287 130 0 0

3/16 1000 17 1277460950 3456256 1904 384 0 0

3/1 1000 17 1301223616 1604332 348 201 0 0

4/2 1000 9 672742599 1764039 430 72 0 0

3/2 1000 8 618549461 1691276 522 227 0 0

4/3 1000 6 505162023 436374 383 146 0 0

So what does over flow mean.

Is it some type of error on switch?

many thanks

Mahesh

glen.grant · ‎10-23-2008

Buffer Overflow means that the port receivesg more traffic than it can store in its buffer. This can be caused a bursty traffic, as well an overrun of buffers. The suggested action is to decrease the transmission of the source device.

If its just very slowly incrementing its probably not a problem and just due to bursty traffic , clear the counters and keep an eye on it for a few days.

View solution in original post

glen.grant · ‎10-23-2008

Buffer Overflow means that the port receivesg more traffic than it can store in its buffer. This can be caused a bursty traffic, as well an overrun of buffers. The suggested action is to decrease the transmission of the source device.

If its just very slowly incrementing its probably not a problem and just due to bursty traffic , clear the counters and keep an eye on it for a few days.

mahesh18 · ‎10-23-2008

Hi glen,

thanks for reply.

I cleared the counters still it is increasing

rapidly so i can ignore this as it is not serious issue?

Thanks

Mahesh