Dont know what to try next.
Configured a point to point T1 between two 3640s. Ping times are erratic. Looks fine for a few seconds then jumps to 1500 - 3600 then normal again.
No errors, drops, resets what so ever.
Ive currently got them sitting next to each other with same issue: Cisco1 > CSU > Cable > CSU > Cisco 2 Ive replaced everything: cables, CSUs, Serial cards... Any ideas what to try?
TIA
interface Serial0/0 description Router1 ip address x.x.x.1 255.255.255.252 no ip route-cache no ip mroute-cache no fair-queue serial restart-delay 0 no cdp enable
------------------------------------------------ Router1#show int serial0/0 Serial0/0 is up, line protocol is up Hardware is DSCC4 Serial Description: Router 1 Internet address is x.x.x.1/30 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation HDLC, loopback not set Keepalive set (10 sec) Restart-Delay is 0 secs Last input 00:00:00, output 00:00:00, output hang never Last clearing of "show interface" counters 00:09:56 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 1000 bits/sec, 3 packets/sec 5 minute output rate 1000 bits/sec, 3 packets/sec 2326 packets input, 187763 bytes, 0 no buffer Received 60 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 2293 packets output, 186881 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out 0 carrier transitions ============================================= interface Serial1/1 description Router2 ip address x.x.x.2 255.255.255.252 no ip route-cache no ip mroute-cache no fair-queue serial restart-delay 0 no cdp enable
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Router2#show int serial1/1 Serial1/1 is up, line protocol is up Hardware is DSCC4 Serial Description: Router2 Internet address is x.x.x.2./30 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation HDLC, loopback not set Keepalive set (10 sec) Restart-Delay is 0 secs Last input 00:00:08, output 00:00:00, output hang never Last clearing of "show interface" counters 00:09:57 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 2000 bits/sec, 3 packets/sec 5 minute output rate 1000 bits/sec, 3 packets/sec 2289 packets input, 187183 bytes, 0 no buffer Received 59 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 2323 packets output, 187607 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out 0 carrier transitions