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channel-group in AS5300 can't support full bandwidth.


I have as5300 and configurate channel-group in E1 with 4 timeslots(64k). I show the serial interface and found the message (available bandwidth is 192K). if i configured 24 timeslot then the available bandwidth is about 1M.

Do anyone know the problem ?

best regards


Router#show interfaces s0:1

Serial0:1 is up, line protocol is down

Hardware is DSX1

Internet address is

MTU 1500 bytes, BW 256 Kbit, DLY 20000 usec,

reliability 251/255, txload 1/255, rxload 1/255

Encapsulation HDLC, loopback not set

Keepalive set (10 sec)

Last input 00:00:17, output never, output hang never

Last clearing of "show interface" counters 00:14:26

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: weighted fair

Output queue: 0/1000/64/0 (size/max total/threshold/drops)

Conversations 0/1/256 (active/max active/max total)

Reserved Conversations 0/0 (allocated/max allocated)

Available Bandwidth 192 kilobits/sec

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

184 packets input, 2576 bytes, 0 no buffer

Received 184 broadcasts, 0 runts, 1 giants, 0 throttles

40 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 39 abort

90 packets output, 3063 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 output buffer failures, 0 output buffers swapped out

2 carrier transitions

Timeslot(s) Used:25-28, Transmitter delay is 0 flags

Community Member

Re: channel-group in AS5300 can't support full bandwidth.

It looks to me the Serial interface is not comfigure properly.You need to check the Connectivity.When looking at the COnfiguration you have posted

"Router#show interfaces s0:1

Serial0:1 is up, line protocol is down "

Serial0:1 is up - which says the Physical(hardarwe) interface is up but "line protocol is down " tells the serial line which transmits the packets is not able to properly establish the connection to the other end.You need to troubleshoot the serial interface.You may also use Cisco Works software downloadable from the Cisco software center website for bandwidth management and others.

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