We created a two T1 multilink between a Cisco 7500 and 1700 series routers. The 1700 has recent 12.3 code. For some reason, we are getting accumulating input, frame, and overrun errors on the multilink interface on the 1700. The Serial0 and Serial1 interfaces do not show any errors... only on the multilink. Also, "sh service-module" is clean for both interfaces so there does not appear to be a provider or local cabling issue, correct?
Shouldn't we see errors on the physical interfaces as well?
routerB#sh int mu2
Multilink2 is up, line protocol is up
Hardware is multilink group interface
Internet address is <blank>
MTU 1500 bytes, BW 3088 Kbit, DLY 100000 usec,
reliability 255/255, txload 14/255, rxload 30/255
Encapsulation PPP, LCP Open, multilink Open
Open: IPCP, CDPCP, 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 08:44:14
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 364000 bits/sec, 100 packets/sec
5 minute output rate 175000 bits/sec, 121 packets/sec
779719 packets input, 411628751 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
264 input errors, 0 CRC, 193 frame, 9 overrun, 0 ignored, 0 abort
877089 packets output, 139788365 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
routerB#sh ppp multilink
Multilink2, bundle name is router
Bundle up for 10:39:00, total bandwidth 3088, load 18/255
Receive buffer limit 24384 bytes, frag timeout 1000 ms
0/0 fragments/bytes in reassembly list
98 lost fragments, 185689 reordered
237/225485 discarded fragments/bytes, 237 lost received
0x1157D4 received sequence, 0x103F86 sent sequence
Member links: 2 active, 0 inactive (max not set, min not set)
Se1, since 10:38:57
Se0, since 09:42:11
