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Incorrect values for 5 minute intervals on 7206

I recently replaced a 2621 with a 7206 to terminate some point-to-point T1's. I use MRTG and thought I was having trouble with that until I got to digging. A rough ascii art sketch of what I have set up follows:

S1/1:0---------------S1/1:0

7206 S1/2:0---------------S1/2:0 UBR 7223

S1/3:0---------------S1/3:0

The UBR is showing the correct numbers for input/output where the 7206 isn't. For example, from the UBR:

Serial1/1:0 is up, line protocol is up

Hardware is Multichannel T1

Internet address is xxx.xxx.xxx.254/30

MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,

reliability 255/255, txload 44/255, rxload 145/255

Encapsulation HDLC, crc 16, Data non-inverted

Keepalive set (10 sec)

Last input 00:00:02, output 00:00:00, output hang never

Last clearing of "show interface" counters 11w4d

Input queue: 0/75/0/16 (size/max/drops/flushes); Total output drops: 97

Queueing strategy: fifo

Output queue :0/40 (size/max)

5 minute input rate 874000 bits/sec, 112 packets/sec

5 minute output rate 267000 bits/sec, 120 packets/sec

885111665 packets input, 3343608535 bytes, 0 no buffer

Received 0 broadcasts, 5581 runts, 9 giants, 0 throttles

6628 input errors, 166 CRC, 0 frame, 0 overrun, 0 ignored, 419 abort

765811165 packets output, 4216137704 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 output buffer failures, 0 output buffers swapped out

0 carrier transitions

no alarm present

Timeslot(s) Used:1-24, subrate: 64Kb/s, transmit delay is 0 flags

From the same interface on the 7206:

Serial1/1:0 is up, line protocol is up

Hardware is Multichannel T1

Description: OneEighty T1 #1 to Cliffs

Internet address is 216.187.180.253/30

MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,

reliability 255/255, txload 1/255, rxload 44/255

Encapsulation HDLC, crc 16, CRC 16, Data non-inverted

Keepalive set (10 sec)

Last input 00:00:02, output 00:00:00, output hang never

Last clearing of "show interface" counters 00:34:05

Queueing strategy: fifo

Output queue 0/40, 44 drops; input queue 0/75, 0 drops

5 minute input rate 269000 bits/sec, 123 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

219912 packets input, 56488882 bytes, 0 no buffer

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

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

244443 packets output, 5869325 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 output buffer failures, 0 output buffers swapped out

0 carrier transitions

no alarm present

Timeslot(s) Used:1-24, subrate: 64Kb/s, transmit delay is 0 flags

Shouldn't the output of the 7206 match the input on the UBR and vice-versa? FYI:

IOS (tm) 7200 Software (C7200-IS-M), Version 12.1(2)T, RELEASE SOFTWARE (fc1)

Any ideas?

Justin

1 REPLY

Re: Incorrect values for 5 minute intervals on 7206

Could be this bug: CSCds92548 (Traffic counters not counting packets.

From the debugging it appears the packet has indeed arrived and was switched/routed however the show interface counters do not appear to be updated.) 12.1(2)T was affected by this.

Counters in general have a few bugs on them (eg for acls, cef, ipsec, show interface, snmp etc).

Steve

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