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WCCP and Interface Statistics

I have recently moved my WCCP redirection at my remote locations from my 3750 switch stack to the WAN routers. I have noticed strange statistics when issuing the "show interface" command. Please take a look at the output below.

bos14rtrwn01#show int mult 1

Multilink1 is up, line protocol is up

Hardware is multilink group interface

Description:

Internet address is x.x.x.x/30

MTU 1500 bytes, BW 3072 Kbit, DLY 100000 usec,

reliability 255/255, txload 10/255, rxload 239/255

Encapsulation PPP, LCP Open, multilink Open

Listen: CDPCP

Open: IPCP, loopback not set

Keepalive set (10 sec)

DTR is pulsed for 2 seconds on reset

Last input 00:00:00, output never, output hang never

Last clearing of "show interface" counters 24w6d

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 2179006

Queueing strategy: Class-based queueing

Output queue: 0/1000/64/2179006 (size/max total/threshold/drops)

Conversations 0/249/256 (active/max active/max total)

Reserved Conversations 3/3 (allocated/max allocated)

Available Bandwidth 1414 kilobits/sec

30 second input rate 6518000 bits/sec, 665 packets/sec

30 second output rate 121000 bits/sec, 105 packets/sec

1262906121 packets input, 1638232792 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

6 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

1022086252 packets output, 925409604 bytes, 0 underruns

0 output errors, 0 collisions, 2 interface resets

0 output buffer failures, 0 output buffers swapped out

0 carrier transitions

bos14rtrwn01#show ver

Cisco IOS Software, 3800 Software (C3825-ADVIPSERVICESK9-M), Version 12.4(15)T3, RELEASE SOFTWARE (fc1)

Obviously this is a 3Mb circuit but my input rate indicates 6.5Mb. Something is off here. I have checked the Bug toolkit but did not find anything.

Anyone else having this issue?

1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Re: WCCP and Interface Statistics

I'm guessing you are using the gre-return (negotiated return) feature on your WAEs?

If so, you are probably seeing CSCsk44513 which causes your incoming interface counters to incorrectly increment. There isn't any current workaround, however it shouldn't affect anything outside the counters incorrectly incrementing.

Hope that helps,

Dan

2 REPLIES
Cisco Employee

Re: WCCP and Interface Statistics

I'm guessing you are using the gre-return (negotiated return) feature on your WAEs?

If so, you are probably seeing CSCsk44513 which causes your incoming interface counters to incorrectly increment. There isn't any current workaround, however it shouldn't affect anything outside the counters incorrectly incrementing.

Hope that helps,

Dan

New Member

Re: WCCP and Interface Statistics

Thanks Dan. I am using negotiated return on the WAEs and this is the bug I was looking for. Looks like an upgrade of the image will clear the issue.

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