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Can't configure E1 channelized circuit at 512K

Hi!

I have a cisco 2610 configured with ios Version 12.2(10a) (c2600-is-mz.122-10a.bin). 64K DRAM 16K FLASH

I have installed a channelized E1 (channel 16 is for in-band signalling).

controller E1 1/0

framing NO-CRC4

line-termination 75-ohm

channel-group 0 timeslots 1-2

channel-group 1 timeslots 3-4

channel-group 2 timeslots 5-12

I have two circuits at 128K already connected on channel 0 and 1 working properly.

But, I'm having problems with a circuit at 512K that I'm trying to connect to channel 2.

When I configure the channel-group 2 and I assign timeslots 5 to 12 (512K) I receive the following message on the console:

sed_e1_tec(config-controller)#channel-group 2 timeslots 5-12

sed_e1_tec(config-controller)#

Apr 23 19:21:57 UTC: !!!! s:t:c 1:0:2 Config response(19) = CSAP_CODE_CHKSUM_CHANGE

I can't find what this message means.

If I do a show int s1/0:2 (channel 2 for 512K ckt):

Serial1/0:2 is initializing, line protocol is down

Hardware is DSX1

MTU 1500 bytes, BW 512 Kbit, DLY 20000 usec,

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

Encapsulation HDLC, loopback not set

Keepalive set (10 sec)

Last input never, output 00:00:14, output hang never

Last clearing of "show interface" counters 1d03h

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

Reserved Conversations 0/0 (allocated/max allocated)

Available Bandwidth 384 kilobits/sec

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

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

0 packets input, 0 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

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

10 packets output, 1040 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 output buffer failures, 0 output buffers swapped out

0 carrier transitions

So, I tried configuring a small amount of timeslots, this is 5-11, 5-10, 5-9... I found that I don't receive this error only if I use 2, 3 or 4 timeslots:

sed_e1_teco(config)#controller e1 1/0

sed_e1_tec(config-controller)#no chann

sed_e1_tec(config-controller)#no channel-group 2 timeslots 5-12

sed_e1_tec(config-controller)#

Apr 23 19:41:56 UTC: Copland ERROR->Slot(1):circuit already unconfigured

sed_e1_tec(config-controller)#channel-group 2 timeslots 5-8

sed_e1_tec(config-controller)#

Apr 23 19:42:07 UTC: %LINK-3-UPDOWN: Interface Serial1/0:2, changed state to up

Apr 23 19:42:08 UTC: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0:2, changed state to up

sed_e1_tec(config-controller)#

Apr 23 19:42:36 UTC: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0:2, changed state to down >>>> this is OK, because I don't have any layer 2 protocol configured yet.

Serial1/0:2 is up, line protocol is down

Hardware is DSX1

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

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

Encapsulation HDLC, loopback not set

Keepalive set (10 sec)

Last input never, output 00:00:06, output hang never

Last clearing of "show interface" counters 1d03h

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

0 packets input, 0 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

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

30 packets output, 2753 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 output buffer failures, 0 output buffers swapped out

0 carrier transitions

If I use more than 4 timeslots, I start reciving the error listed above:

sed_e1_tec(config-controller)#no channel-group 2

sed_e1_tec(config-controller)#channel-group 2 timeslots 5-9

sed_e1_tec(config-controller)#

Apr 23 19:45:25 UTC: !!!! s:t:c 1:0:2 Config response(19) = CSAP_CODE_CHKSUM_CHANGE

Serial1/0:2 is initializing, line protocol is down

Hardware is DSX1

MTU 1500 bytes, BW 320 Kbit, DLY 20000 usec,

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

Encapsulation HDLC, loopback not set

Keepalive set (10 sec)

Last input never, output 00:00:32, output hang never

Last clearing of "show interface" counters 1d03h

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

Reserved Conversations 0/0 (allocated/max allocated)

Available Bandwidth 240 kilobits/sec

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

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

0 packets input, 0 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

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

10 packets output, 1040 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 output buffer failures, 0 output buffers swapped out

0 carrier transitions

What does means Serial1/0:2 is initializing ?

It looks like I can't configure more than 256K circuit. I can't understand why. I checked and the telco is providing me 512K circuit speed.

Can someone help me! I can't find any related information on the Cisco Web Site.

Thank you!!!!!

Mariana Burroni

mburroni@sedeco.com.ar

1 REPLY
Bronze

Re: Can't configure E1 channelized circuit at 512K

You can check whether the problem is due to the image you are using or any limitation in the card that you are using. You can also check the data sheet for the card that you are using. The bundling of channels on the Telco end should also match with your configuration.

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