Hi!..
I have several 56k frame-realy sites that have an 805 router. The 805 routers replaced old 3com Netbuilder routers, although the circuit did not change at all. I used to be able to drive these circuits at 56k, but since the introduction of the 805's, I can't seem to drive the line beyond about 20k. We have done a lot of work with the carrier to determine what the problem might be, but we are coming up blank. We have even increased the CIR to 56k at one site to no effect. Basicaly, I can't get the interface to transmit at more than 118/255 - that's where the serial connection sits. This is across PVC's that are Frame to ATM and FRame to FRame. Here's a sample config piece from my 805:
St-Georges#sh run int ser 0
Building configuration...
Current configuration : 224 bytes
!
interface Serial0
bandwidth 56
no ip address
encapsulation frame-relay IETF
no fair-queue
frame-relay class thomas
frame-relay traffic-shaping
frame-relay lmi-type cisco
hold-queue 256 in
hold-queue 1024 out
end
St-Georges#sh run int ser 0.18
Building configuration...
Current configuration : 211 bytes
!
interface Serial0.18 point-to-point
description Frame-relay connection to Winnipeg ATM interface
bandwidth 56
ip address 10.138.94.1 255.255.255.0
no cdp enable
frame-relay interface-dlci 18 IETF
end
St-Georges#sh run int ser 0.502
Building configuration...
Current configuration : 148 bytes
!
interface Serial0.502 point-to-point
bandwidth 56
ip address 10.1.1.2 255.255.255.0
no cdp enable
frame-relay interface-dlci 502 IETF
end
Show Frame-relay-map:
St-Georges#sh frame-relay map
Serial0.18 (up): point-to-point dlci, dlci 18(0x12,0x420), broadcast, IETF, BW =
56000
status defined, active
Serial0.502 (up): point-to-point dlci, dlci 502(0x1F6,0x7C60), broadcast, IETF,
BW = 48000
status defined, active
One other note of interest - When I run an end to end ping, the utilization climbs very very slowly - takes about 3 minutes to get to the 118/255 utilization.
Oh - Sh int ser 0:
St-Georges#sh int ser 0
Serial0 is up, line protocol is up
Hardware is PowerQUICC Serial
MTU 1500 bytes, BW 56 Kbit, DLY 20000 usec,
reliability 255/255, txload 4/255, rxload 4/255
Encapsulation FRAME-RELAY IETF, loopback not set
Keepalive set (10 sec)
LMI enq sent 4046, LMI stat recvd 4046, LMI upd recvd 0, DTE LMI up
LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
LMI DLCI 1023 LMI type is CISCO frame relay DTE
Broadcast queue 0/64, broadcasts sent/dropped 0/0, interface broadcasts 0
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 11:14:38
Input queue: 0/256/1/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/1024 (size/max)
5 minute input rate 1000 bits/sec, 2 packets/sec
5 minute output rate 1000 bits/sec, 2 packets/sec
49882 packets input, 4569527 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
2 input errors, 0 CRC, 2 frame, 0 overrun, 0 ignored, 0 abort
65469 packets output, 5076968 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
Any ideas would be very welcome..
