[nsp] PA-MC-2T3+ reporting traffic way too high

[Jeff Chan]

Hello Lucas,
Thanks much for the suggestion.  As it happens we are trying that
experiment 30 minutes from now.  :-)

Cheers,

Jeff C.
__

On Monday, July 21, 2003, 2:33:04 PM, Lucas Iglesias wrote:
> Hi Jeff,

> I had the same issue with a PA-8E1 on a 7513, when the interfaces were
> configured with PPP and Multilink the traffic statistics were always
> unreliable.
> Never found why. Just to test it (if you can), try to see what happens if
> you change the encapsulation to hdlc.

> Regards, Luckas.-

> -----Mensaje original-----
> De: Jeff Chan [mailto:cisco-nsp at jeffchan.com]
> Enviado el: Lunes, 21 de Julio de 2003 05:57 p.m.
> Para: cisco-nsp at puck.nether.net
> Asunto: [nsp] PA-MC-2T3+ reporting traffic way too high


> Hi All,
> A netadmin friend suggested I sign up for this list so I thought
> I'd see if you guys had some ideas about a possible bug we're
> seeing.

> We recently upgraded to 12.2(14)S3 and notice that the traffic
> reported on a PA-MC-2T3+ in a 7513 on a VIP-2/50 is way too high:

>> supranet01>sh int Serial10/1/1/8:0
>> Serial10/1/1/8:0 is up, line protocol is up
>>   Hardware is cyBus 2CT3+
>>   Description: AA Peering Point #1
>>   Internet address is NN/30
>>   MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,
>>      reliability 255/255, txload 26/255, rxload 48/255
>>   Encapsulation PPP, crc 16, loopback not set
>>   Keepalive set (10 sec)
>>   LCP Open
>>   Open: IPCP
>>   Last input 00:00:11, output 00:00:00, output hang never
>>   Last clearing of "show interface" counters 16:30:49
>>   Input queue: 0/75/0/11 (size/max/drops/flushes); Total output drops:
> 1569
>>   Queueing strategy: fifo
>>   Output queue: 0/40 (size/max)
>>   5 minute input rate 9545000 bits/sec, 3026 packets/sec
>>   5 minute output rate 12496000 bits/sec, 2970 packets/sec
>>      2341811 packets input, 778137258 bytes, 0 no buffer
>>      Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
>>      0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 1 abort
>>      2477327 packets output, 1393787280 bytes, 0 underruns
>>      0 output errors, 0 collisions, 0 interface resets
>>      0 output buffer failures, 0 output buffers swapped out
>>      2 carrier transitions no alarm present
>>   Timeslot(s) Used: 1-24, Transmitter delay is 0 flags, transmit queue
> length 5
>>   non-inverted data

> How can an interface with 1536 Kb of bandwidth report or do 9
> and 12 megabits of traffic?  The answer is that it can't.  :)
> The 5 minute average values our mrtg is picking up by snmp also
> got spikey after the upgrade.  The peak values may be correct
> but the average seems missing, filtered out, or too low.

> We did turn of cef since it seemed to cause a problem, possibly
> with ISL.  (We plan to move to Dot1Q for trunking vlans later.)

> Has anyone else seen this?

> Cheers,

> Jeff C.

-- 
Jeff Chan
mailto:cisco-nsp at jeffchan.com
http://www.jeffchan.com/