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New Member

E1 Problem_E1 state change alternatively

I have a 7204VXR BRAS with several E1 IMA,

but state one of them change alteratively , I use same config for all of them .

I use this E1 for transfer date to my DSLAM .

here is its config :

vpdn enable

bridge irb

!

interface FastEthernet0/0

ip address 192.168.*.* 255.255.*.*

duplex full

speed 100

pppoe enable

!

interface ATM1/2

no ip address

carrier-delay 60

scrambling cell-payload

framing crc4adm

ima-group 2

interface ATM1/ima2

description ******** *, * ********

ip address 10.0.*.* 255.255.*.* carrier-delay 60

no atm ilmi-keepalive

range 1 pvc 0/32 0/200

encapsulation aal5snap

protocol pppoe

!

pvc 1/32

protocol ip 10.*.*.* broadcast

protocol ip 10.*.*.* broadcast

!

I changed my dslam , the path of E1 from DSLAM to BRAS but my problem is still alive !

and E1 log is here :

Jul 8 12:12:18: %LINK-3-UPDOWN: Interface ATM1/2, changed state to up

Jul 8 12:23:03: %SYS-5-CONFIG_I: Configured from console by amir on vty0 (85.13

3.131.8)

Jul 8 12:27:39: %IF-4-BACKWARD_COUNTERS: Corrected for backward rxtx_errors cou

nters (172410 -> 172305) on ATM1/ima2

Jul 8 12:28:36: %LINK-3-UPDOWN: Interface ATM1/2, changed state to up

Jul 8 12:31:40: %LINK-3-UPDOWN: Interface BVI2, changed state to down

Jul 8 12:31:41: %LINEPROTO-5-UPDOWN: Line protocol on Interface BVI2, changed s

tate to down

Jul 8 12:31:50: %LINK-3-UPDOWN: Interface BVI2, changed state to up

Jul 8 12:31:51: %LINEPROTO-5-UPDOWN: Line protocol on Interface BVI2, changed s

tate to up

Jul 8 12:32:39: %LINK-3-UPDOWN: Interface ATM1/2, changed state to up

Jul 8 12:38:49: %LINK-3-UPDOWN: Interface ATM1/2, changed state to up

Jul 8 13:09:23: %LINK-3-UPDOWN: Interface ATM1/2, changed state to up

3 REPLIES

Re: E1 Problem_E1 state change alternatively

Hello,

I would check with your provider first, to see if the errors are coming from that side...

Regards,

GNT

New Member

Re: E1 Problem_E1 state change alternatively

first I'm sorry for my bad english.

This E1 is a P2P E1 for transfer my date to adsl user from my centeral office where my BW is exit to telecommunication PCM branch where user phone line are terminated.

My E1 cross on Coaxial from DSLAM to PCM and cross Optical fiber from PCM to MY centeral Office.

This E1 is n't a PRI or CAS.

My BRAS is a 7204VXR with 256M SDRAM and My IOS is

c7200-js-mz.124-3.bin nad My DSLAM is Siemens hix5300 .

1-I perform a loopback check with my provider,

when I created a loopback, there was no UpDown errors and when i delete loopback for 7 or 8 hour there was no error but after that errors appear again.

2-I changed Coaxial cable and one time changed E1 path on Optical fiber but problem still remain.

Do you think a synchronization problem is source of problem ?

New Member

Re: E1 Problem_E1 state change alternatively

I draw the path in this file.

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