Slip errors on E1 link

[grinch182]

Hello there. I have two E1 links bundled in to multi-link. I'm facing slip errors on me E1 controller. It means I have problem with synchronization. There is my controllers configuration. Tell me please where I'm wrong.

Side A

controller E1 0/3/0

clock source line primary

channel-group 0 timeslots 1-31

!

controller E1 0/3/1

channel-group 0 timeslots 1-16

Side B

controller E1 0/1/0

clock source line primary

channel-group 0 timeslots 1-31

!

controller E1 0/1/1

channel-group 0 timeslots 1-16

Sincerely,

GRinch

[rstanisl]

HI

which controller do you see the slips? 0/1/0 or 0/1/1?

Slips are related to colcking issues.

configure controller 0/1/1 as clock sourn internal.

Since the 0/1/0 is the primary clock souce the 0/1/1 will be able to get the clocking form that and sync.

Raymond

[grinch182]

Thanks for reply,

I have slips on both controllers. I receive synchronization from my ISP so controller sould have clock soure line. I also found an information that clock soure line independent helps in this situation but U have do deletet channel-group before use this command. It's ok on local site but pretty difficult on remote because nobody who can configure cisco router there.

[rstanisl]

Hi

You must have a v2 card, that does support clock source independent but like you said you have to you have to delete the channel-group and add it back

Since the provider is giving you clock specify the below command on the router.

Global config

network-clock-participate wic 0

network-clock-select 1 e1 0/3/0

network-clock-select 2 e1 0/3/1

This will make one of the e1 primary clock source.

See if this stops the slips on the interface.

Ray

[grinch182]

I do have a card you R talking about. I'll try configuration U provide next week and let you if it helps.

Sincerely,

GRinch