|At 09:58 AM 5/1/97 -0000, Marc Powell wrote:
|>On 5/1/97 5:18 AM, Edward Henigin sent these words of wisdom:
|
|[snip]
|
|>> 3) extremely sluggish performance, sometimes. Pings on local
|>>10/100 baseT switched ethernet will be in the 100-700ms range, when normally
|>
|>This also is something that we have seen on a fairly regular basis. It
|>does not appear to be related to heavy usage of the box as it occurs on
|>boxes that get very little traffic. Resetting the box fixes the problem.
|>If anyone has any thoughts on this...
|
|The first thing that occurs to me is to check the ether0 netstats (sho
|nets). My rule of thumb is that a network is health if Ierrs, Oerrs and
|Resets are zero or single digit and the ratio of collisions divided by
|Opkts is less than 5%. Anything else indicates possible problems on the
|ethernet.
Environment:
Fully switched 10baseT environment using Cisco Catalyst 1900 switches
uplinking to a Cisco Catalyst5000 switch using Full Duplex 100baseTX.
We have several Ascend MAX4004s and USR TC hubs on the same Cat1900
switch that the PM3s are on.
The Cat5000 uplinks to a cisco 7513 via multi-mode fiber into a
100baseFX PA in a vip2-20 card.
All cabling is cat5 and is cat5 certified. It does not appear to be an
ethernet problem.
Here are the ether stats on some of our PM3s that are having problems:
pm1.austin> sh nets
Name Ipkts Ierrs Opkts Oerrs Collis Resets Queue
ether0 40497473 204 40103900 0 316392 2 0
pm1.austin> ver
Livingston PortMaster PM-3 ComOS 3.5c6
System uptime is 9 days 3 hours 35 minutes
pm2.austin> sh nets
Name Ipkts Ierrs Opkts Oerrs Collis Resets Queue
ether0 885613 0 900601 0 3945 0 0
pm2.austin> ver
Livingston PortMaster PM-3 ComOS 3.5.1b11
System uptime is 6 hours 51 minutes
pm3.austin> sh nets
Name Ipkts Ierrs Opkts Oerrs Collis Resets Queue
ether0 15841913 0 16451627 0 89414 0 0
pm3.austin> ver
Livingston PortMaster PM-3 ComOS 3.5c6
System uptime is 8 days 3 hours 3 minutes
isdn-1.austin> sh nets
Name Ipkts Ierrs Opkts Oerrs Collis Resets Queue
ether0 128011 0 45632 0 0 0 0
isdn-1.austin> ver
Livingston PortMaster PM-3 ComOS 3.5c6
System uptime is 13 hours 33 minutes
isdn-2.austin> sh nets
Name Ipkts Ierrs Opkts Oerrs Collis Resets Queue
ether0 859378 0 925061 0 2101 0 0
isdn-2.austin> ver
Livingston PortMaster PM-3 ComOS 3.5.1b11
System uptime is 14 hours 1 minutes
Jonah Barron Yokubaitis | Texas' First X2 and K56flex
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