Is this just another case of "cisco can't count"? I's seeing input frame
errors on every multilink interface of a 7206 (12.3(23)) increment about
the number of input packets the multilink interface is receiving. In some
cases, as the interfaces below, there are some errors on the physical
T1's, but nothing approaching the number or rate of errors seen on the
multilink interface. In each case, the input frame errors on the
multilink interface is actually just a hair below the total input packets.
i.e.
#sh int mu1 | inc packets\ input|input\ errors
1390839525 packets input, 1498691471 bytes, 0 no buffer
1390833616 input errors, 0 CRC, 1390833616 frame, 0 overrun, 0 ignored, 0
abort
#sh int mu2 | inc packets\ input|input\ errors
1401092404 packets input, 3736202100 bytes, 0 no buffer
1401091942 input errors, 0 CRC, 1401091942 frame, 0 overrun, 0 ignored, 0
abort
#sh int mu3 | inc packets\ input|input\ errors
1496282 packets input, 536685284 bytes, 0 no buffer
1495993 input errors, 0 CRC, 1495993 frame, 0 overrun, 0 ignored, 0 abort
Multilink3 is up, line protocol is up
Hardware is multilink group interface
Internet address is ...
MTU 1500 bytes, BW 3072 Kbit, DLY 100000 usec,
reliability 139/255, txload 33/255, rxload 3/255
Encapsulation PPP, LCP Open, multilink Open
Open: IPCP, loopback not set
Keepalive set (10 sec)
DTR is pulsed for 2 seconds on reset
Last input 01:53:57, output never, output hang never
Last clearing of "show interface" counters 07:47:03
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 81
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 42000 bits/sec, 48 packets/sec
30 second output rate 404000 bits/sec, 55 packets/sec
1461669 packets input, 525052340 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
1461380 input errors, 0 CRC, 1461380 frame, 0 overrun, 0 ignored, 0 abort
1599129 packets output, 932362894 bytes, 0 underruns
0 output errors, 0 collisions, 3 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
Serial6/0/7:0 is up, line protocol is up
Hardware is PA-MC-T3
MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,
reliability 255/255, txload 17/255, rxload 4/255
Encapsulation PPP, LCP Open, multilink Open, crc 16, loopback not set
Keepalive set (10 sec)
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 07:53:13
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 43
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 30000 bits/sec, 20 packets/sec
30 second output rate 104000 bits/sec, 16 packets/sec
748831 packets input, 270946224 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
8 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 8 abort
818879 packets output, 480786728 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: 1536Kb/s, transmit delay is 0 flags
non-inverted data
Serial6/0/17:0 is up, line protocol is up
Hardware is PA-MC-T3
MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,
reliability 255/255, txload 22/255, rxload 4/255
Encapsulation PPP, LCP Open, multilink Open, crc 16, loopback not set
Keepalive set (10 sec)
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 07:39:49
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 40
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 25000 bits/sec, 20 packets/sec
30 second output rate 136000 bits/sec, 22 packets/sec
724957 packets input, 263163858 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
1202 input errors, 42 CRC, 520 frame, 0 overrun, 0 ignored, 640 abort
791304 packets output, 464004519 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: 1536Kb/s, transmit delay is 0 flags
non-inverted data
interface Multilink3
ip address ...
load-interval 30
no cdp enable
ppp authorization noauth
ppp multilink
ppp multilink fragment disable
ppp multilink group 3
interface Serial6/0/7:0
no ip address
encapsulation ppp
load-interval 30
no fair-queue
no cdp enable
ppp authorization noauth
ppp multilink
ppp multilink group 3
interface Serial6/0/17:0
no ip address
encapsulation ppp
load-interval 30
no fair-queue
no cdp enable
ppp authorization noauth
ppp multilink
ppp multilink group 3
----------------------------------------------------------------------
Jon Lewis | I route
Senior Network Engineer | therefore you are
Atlantic Net |
_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________
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