Cisco 3845 NM-1T3/E3 - Linecode b8zs option

Answered Question
Apr 30th, 2008

We are geting ready to bring up a t3 circuit in couple of days, upon configuring t3 controller I do not

see linecode option to specify b8zs, the PE router I was told b8zs is the linecode to be used.

Would I need a different IOS code in order to have linecode parameter option available?

card type t3 4

controller T3 4/0

cablelength 25

interface Serial4/0

description MPLS_CIRID_

ip address xxx.xxx.xxx.xxx 255.255.255.252

dsu bandwidth 44210

EDGE3845_MPLS(config)#controller t3 4/0

EDGE3845_MPLS(config-controller)#?

Controller configuration commands:

bert Start BERT test at DS3

cablelength cable length in feet (0-450)

clock Specify the clock source for a T3 link

default Set a command to its defaults

description Controller specific description

exit Exit from controller configuration mode

framing Specify the type of Framing on a T3 link

help Description of the interactive help system

loopback Put the entire T3 line into loopback

mdl Maintenance Data Link Configuration

no Negate a command or set its defaults

shutdown Shut down a DS3 link (send DS3 Idle)

EDGE3845_MPLS#show controller t3

T3 4/0 is down.

Applique type is Subrate T3

Transmitter is sending remote alarm.

Receiver has loss of signal.

MDL transmission is disabled

FEAC code received: No code is being received

Framing is C-BIT Parity, Line Code is B3ZS, Clock Source is Internal

Data in current interval (60 seconds elapsed):

0 Line Code Violations, 0 P-bit Coding Violation

0 C-bit Coding Violation, 0 P-bit Err Secs

0 P-bit Severely Err Secs, 0 Severely Err Framing Secs

60 Unavailable Secs, 0 Line Errored Secs

0 C-bit Errored Secs, 0 C-bit Severely Errored Secs

Total Data (last 24 hours)

0 Line Code Violations, 0 P-bit Coding Violation,

0 C-bit Coding Violation, 0 P-bit Err Secs,

0 P-bit Severely Err Secs, 0 Severely Err Framing Secs,

86400 Unavailable Secs, 0 Line Errored Secs,

0 C-bit Errored Secs, 0 C-bit Severely Errored Secs

EDGE3845_MPLS#

EDGE3845_MPLS#show ver

Cisco IOS Software, 3800 Software (C3845-ADVENTERPRISEK9-M), Version 12.4(18), RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2007 by Cisco Systems, Inc.

Compiled Fri 30-Nov-07 23:50 by prod_rel_team

ROM: System Bootstrap, Version 12.3(11r)T1, RELEASE SOFTWARE (fc1)

EDGE3845_MPLS uptime is 1 day, 11 hours, 31 minutes

System returned to ROM by power-on

System image file is "flash:c3845-adventerprisek9-mz.124-18.bin"

Cisco 3845 (revision 1.0) with 222208K/39936K bytes of memory.

Processor board ID FHK0904F11G

2 Gigabit Ethernet interfaces

1 Serial interface

1 Virtual Private Network (VPN) Module

1 Subrate T3/E3 port

DRAM configuration is 64 bits wide with parity enabled.

479K bytes of NVRAM.

62592K bytes of ATA System CompactFlash (Read/Write)

Configuration register is 0x2102

Your comments are well appreciated

Rgds

Jorge

I have this problem too.
0 votes
Correct Answer by mheusing about 8 years 7 months ago

Hi,

B8ZS is used with T1 whereas a T3 will use B3ZS - as seen from the output of your "show" command.

Check f.e. http://en.wikipedia.org/wiki/B8ZS and http://en.wikipedia.org/wiki/B3ZS

So I am assuming a communication problem between your SP and you. Could you please double check with your provider, if he gave you the proper requirement?

Hope this helps! Please use the rating system.

Regards, Martin

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Correct Answer
mheusing Thu, 05/01/2008 - 04:48

Hi,

B8ZS is used with T1 whereas a T3 will use B3ZS - as seen from the output of your "show" command.

Check f.e. http://en.wikipedia.org/wiki/B8ZS and http://en.wikipedia.org/wiki/B3ZS

So I am assuming a communication problem between your SP and you. Could you please double check with your provider, if he gave you the proper requirement?

Hope this helps! Please use the rating system.

Regards, Martin

JORGE RODRIGUEZ Thu, 05/01/2008 - 07:23

Thank you Martin !

You nailed it, and I've learned on T3 linecode. SP miscommunication.

Rgds

Jorge

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