lost cell delineation

Unanswered Question
Aug 29th, 2007

Hello all,

I'm using a cisco 2811 IOS c2800nm-entservicesk9-mz.124-5.bin with 4 VWIC-2MFT-E1 modules connected with eight E1 atm link configured with 2 ima groups.

Even if i've replaced wic and cables i continue to receive these error:

*Aug 29 13:50:19.614: %ATM_AIM-5-CELL_ALARM_UP: Interface ATM0/2/0 lost cell delineation.

*Aug 29 13:50:19.630: %ATM_AIM-5-CELL_ALARM_DOWN: Interface ATM0/2/0 regained cell delineation.

*Aug 29 13:50:20.130: %ATM_AIM-5-ACTIVE_LINK_DOWN: Interface ATM0/2/0 of IMA Group ATM0/IMA1 is now inactive.

*Aug 29 13:50:20.130: %ATM_AIM-5-ACTIVE_LINK_CHANGE: IMA Group ATM0/IMA1 now has 3 active links.

*Aug 29 13:50:20.158: %ATM_AIM-5-ACTIVE_LINK_UP: Interface ATM0/2/0 of IMA Group ATM0/IMA1 is now active.

and for all the interface grouped to the same ima group.

here the configuration:

network-clock-participate wic 0

network-clock-participate wic 1

network-clock-participate wic 2

network-clock-participate wic 3

network-clock-participate aim 0

network-clock-participate aim 1

network-clock-select 1 E1 0/0/0

network-clock-select 2 E1 0/0/1

network-clock-select 3 E1 0/2/0

network-clock-select 4 E1 0/3/0

...

controller E1 0/0/0

mode atm aim 0

!

controller E1 0/0/1

mode atm aim 0

!

controller E1 0/1/0

mode atm aim 0

!

controller E1 0/1/1

mode atm aim 0

!

controller E1 0/2/0

mode atm aim 1

!

controller E1 0/2/1

mode atm aim 1

!

controller E1 0/3/0

mode atm aim 1

!

controller E1 0/3/1

mode atm aim 1

interface ATM0/IMA0

no ip address

load-interval 30

ima clock-mode common 0

no atm oversubscribe

no atm ilmi-keepalive

service-policy output VOICE-POLICY

!

interface ATM0/IMA0.1 point-to-point

description WORKING

ip address 192.168.1.6 255.255.255.252

ip mtu 1500

ip load-sharing per-packet

no snmp trap link-status

pvc 11/100

protocol ip 192.168.1.5 broadcast

ubr 7680

oam-pvc manage

encapsulation aal5snap

!

!

interface ATM0/IMA1

no ip address

load-interval 30

ima clock-mode common 0

no atm oversubscribe

no atm ilmi-keepalive

service-policy output VOICE-POLICY

!

interface ATM0/IMA1.1 point-to-point

description NOT WORKING

ip address 192.168.1.2 255.255.255.252

ip mtu 1500

ip load-sharing per-packet

no snmp trap link-status

pvc 11/100

protocol ip 192.168.1.1 broadcast

ubr 7680

oam-pvc manage

encapsulation aal5snap

!

!

interface ATM0/0/0

no ip address

scrambling-payload

ima-group 0

no atm oversubscribe

no atm ilmi-keepalive

!

interface ATM0/0/1

no ip address

scrambling-payload

ima-group 0

no atm oversubscribe

no atm ilmi-keepalive

!

interface ATM0/1/0

no ip address

scrambling-payload

ima-group 0

no atm oversubscribe

no atm ilmi-keepalive

!

interface ATM0/1/1

no ip address

scrambling-payload

ima-group 0

no atm oversubscribe

no atm ilmi-keepalive

!

interface ATM0/2/0

no ip address

scrambling-payload

ima-group 1

no atm oversubscribe

no atm ilmi-keepalive

!

interface ATM0/2/1

no ip address

scrambling-payload

ima-group 1

no atm oversubscribe

no atm ilmi-keepalive

!

interface ATM0/3/0

no ip address

scrambling-payload

ima-group 1

no atm oversubscribe

no atm ilmi-keepalive

!

interface ATM0/3/1

no ip address

scrambling-payload

ima-group 1

no atm oversubscribe

no atm ilmi-keepalive

These two links are provided by the local incumbent but i don't know if they are attached to the same device;

If the two links are connected to a different device, is it possible that the second link use le clock of

the first one losing delineation?

Thanks in advance

I have this problem too.
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purohit_810 Wed, 08/29/2007 - 06:10

See as of error's mean: %ATM_AIM-5-CELL_ALARM_UP: Interface ATM0/2/0 lost cell delineation.

If the alarm or the interface is flapping, check the clocking configuration.

PLEAE CHECK YOUR CKOCK CONFIGURATION. NO ACTION REQUIRED ON Interface ATM0/2/0 regained cell delineation.

http://www.cisco.com/en/US/products/ps6350/products_system_message_guide_chapter09186a0080462670.html

Regards,

Dharmesh Purohit

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