I am doing a 4x4 multilink from 2651 to a 2651 over slow, long latency satellite modem links. I've noticed that I'm starting to get overruns on the lines, which correlate to no buffers, drops on the input queue and hence the same amount of input errors. I'm doing simple FTP transfers across the links... Here is some sample output from the show commands... Any ideas on how to fix this?
TIA,
Doug
Tty Typ Tx/Rx A Modem Roty AccO AccI Uses Noise Overruns Int
0 CTY - - - - - 1 12 0/0 -
Ready
A 33 TTY 19200/19200 - inout - - - 9 0 0/1023381 -
Ready
34 TTY 19200/19200 - inout - - - 15 0 0/697290 -
Idle
A 35 TTY 19200/19200 - inout - - - 7 0 0/2621892 -
Ready
36 TTY 19200/19200 - inout - - - 32 0 0/1186640 -
spo-iridium-dgw1#sh buffer
Buffer elements:
495 in free list (500 max allowed)
52354783 hits, 0 misses, 0 created
Public buffer pools:
Small buffers, 104 bytes (total 50, permanent 50):
50 in free list (20 min, 150 max allowed)
132805 hits, 0 misses, 0 trims, 0 created
0 failures (0 no memory)
Middle buffers, 600 bytes (total 40, permanent 25, peak 124 @ 2d01h):
34 in free list (10 min, 150 max allowed)
54574 hits, 144 misses, 362 trims, 377 created
0 failures (0 no memory)
Big buffers, 1536 bytes (total 50, permanent 50, peak 234 @ 1d01h):
43 in free list (5 min, 150 max allowed)
40575 hits, 177 misses, 523 trims, 523 created
0 failures (0 no memory)
VeryBig buffers, 4520 bytes (total 10, permanent 10):
10 in free list (0 min, 100 max allowed)
0 hits, 0 misses, 0 trims, 0 created
0 failures (0 no memory)
Large buffers, 5024 bytes (total 0, permanent 0):
0 in free list (0 min, 10 max allowed)
0 hits, 0 misses, 0 trims, 0 created
0 failures (0 no memory)
Huge buffers, 18024 bytes (total 0, permanent 0):
0 in free list (0 min, 4 max allowed)
0 hits, 0 misses, 0 trims, 0 created
0 failures (0 no memory)
Interface buffer pools:
Async33 buffers, 1504 bytes (total 4, permanent 4):
0 in free list (0 min, 4 max allowed)
4 hits, 0 fallbacks
4 max cache size, 2 in cache
13013 hits in cache, 1211584 misses in cache
Async34 buffers, 1504 bytes (total 4, permanent 4):
0 in free list (0 min, 4 max allowed)
4 hits, 0 fallbacks
4 max cache size, 2 in cache
15985 hits in cache, 16424479 misses in cache
Async35 buffers, 1504 bytes (total 4, permanent 4):
0 in free list (0 min, 4 max allowed)
4 hits, 1 fallbacks
4 max cache size, 2 in cache
27413 hits in cache, 2938969 misses in cache
Async36 buffers, 1504 bytes (total 4, permanent 4):
0 in free list (0 min, 4 max allowed)
4 hits, 0 fallbacks
4 max cache size, 2 in cache
11574 hits in cache, 5311054 misses in cache
CD2430 I/O buffers, 1536 bytes (total 160, permanent 160):
0 in free list (0 min, 160 max allowed)
160 hits, 0 fallbacks
Header pools:
Header buffers, 0 bytes (total 137, permanent 128, peak 137 @ 4d02h):
9 in free list (10 min, 512 max allowed)
125 hits, 3 misses, 0 trims, 9 created
0 failures (0 no memory)
128 max cache size, 128 in cache
4743 hits in cache, 0 misses in cache
Particle Clones:
1024 clones, 8106 hits, 0 misses
Public particle pools:
F/S buffers, 256 bytes (total 384, permanent 384):
128 in free list (128 min, 1024 max allowed)
256 hits, 0 misses, 0 trims, 0 created
0 failures (0 no memory)
256 max cache size, 256 in cache
8105 hits in cache, 0 misses in cache
Normal buffers, 1548 bytes (total 512, permanent 512):
320 in free list (128 min, 1024 max allowed)
256 hits, 0 misses, 0 trims, 0 created
0 failures (0 no memory)
128 max cache size, 128 in cache
0 hits in cache, 0 misses in cache
Private particle pools:
FastEthernet0/0 buffers, 1548 bytes (total 192, permanent 192):
0 in free list (0 min, 192 max allowed)
192 hits, 0 fallbacks
192 max cache size, 128 in cache
77891 hits in cache, 0 misses in cache
FastEthernet0/1 buffers, 1548 bytes (total 192, permanent 192):
0 in free list (0 min, 192 max allowed)
192 hits, 0 fallbacks
192 max cache size, 192 in cache
0 hits in cache, 0 misses in cache
spo-iridium-dgw1#sh int async 33
Async33 is up, line protocol is up
Hardware is CD2430 in async mode
MTU 505 bytes, BW 2 Kbit, DLY 100000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, LCP Open, multilink Open, loopback not set
DTR is pulsed for 5 seconds on reset
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 1d02h
Input queue: 0/75/1023381/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 1/10 (size/max)
5 minute input rate 0 bits/sec, 1 packets/sec
5 minute output rate 0 bits/sec, 1 packets/sec
3492 packets input, 159146 bytes, 1023381 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 1023381 throttles
1023388 input errors, 7 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
3642 packets output, 164448 bytes, 0 underruns
0 output errors, 0 collisions, 12 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
spo-iridium-dgw1#sh int async 34
Async34 is up, line protocol is up
Hardware is CD2430 in async mode
MTU 505 bytes, BW 2 Kbit, DLY 100000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, LCP Open, multilink Open, loopback not set
DTR is pulsed for 5 seconds on reset
Last input 00:00:02, output 00:00:00, output hang never
Last clearing of "show interface" counters 1d02h
Input queue: 8/75/697290/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 1/10 (size/max)
5 minute input rate 0 bits/sec, 1 packets/sec
5 minute output rate 0 bits/sec, 1 packets/sec
6141 packets input, 273601 bytes, 697290 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 697290 throttles
697371 input errors, 81 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
5556 packets output, 248461 bytes, 0 underruns
0 output errors, 0 collisions, 23 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
spo-iridium-dgw1#sh int async 35
Async35 is up, line protocol is up
Hardware is CD2430 in async mode
MTU 505 bytes, BW 2 Kbit, DLY 100000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, LCP Open, multilink Open, loopback not set
DTR is pulsed for 5 seconds on reset
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 1d02h
Input queue: 1/75/2621892/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 1/10 (size/max)
5 minute input rate 0 bits/sec, 2 packets/sec
5 minute output rate 0 bits/sec, 1 packets/sec
11226 packets input, 528581 bytes, 2621892 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 2621892 throttles
2621923 input errors, 31 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
6985 packets output, 308083 bytes, 0 underruns
0 output errors, 0 collisions, 12 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
spo-iridium-dgw1#sh int async 36
Async36 is down, line protocol is down
Hardware is CD2430 in async mode
MTU 505 bytes, BW 2 Kbit, DLY 100000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, LCP Closed, multilink Closed
Closed: BACP, loopback not set
DTR is pulsed for 5 seconds on reset
Last input 00:02:38, output 00:02:38, output hang never
Last clearing of "show interface" counters 1d02h
Input queue: 0/75/1186640/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/10 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
3227 packets input, 142272 bytes, 1186640 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 1186640 throttles
1186649 input errors, 9 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
2848 packets output, 122474 bytes, 0 underruns
0 output errors, 0 collisions, 37 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
