Learn how to a build a cloud-first strategyRegister Now

x
?
Solved

VWIC-2MFT-T1 question

Posted on 2010-11-15
6
Medium Priority
?
652 Views
Last Modified: 2012-05-10
Is it possible for a VWIC-2MFT-T1(3640), to connect to a WIC-1DSU-T1 (2621xm)? This is a lab setup and the routers are interconnected via a homemade t1 crossover.

k. Serial interface is up, but line protocol is down. Cable definitely works, tried it on other routers.

Both routers' clock source is line
2621xm is defining clock rate
framing is esf
line code bz8

Is this a compatibility issue
0
Comment
Question by:orus
  • 2
  • 2
4 Comments
 
LVL 12

Expert Comment

by:Faruk Onder Yerli
ID: 34140699

Note: The 2-port E1 Multiflex Trunk VWICs has only one shared clocking domain between the two E1 controllers. So, if both E1 controllers are configured to derive clocking from the line, the clock references received must be synchronous. Otherwise, timing slips will occur on at least one of the controllers. If the clocking sources are pleisochronous and one controller is configured for "clock source line primary" and the other for "clock source line", it is likely the second controller will exhibit controlled slips in the output of the "show controllers E1" command. This behaviour is a hardware limitation of the 2-port E1 Multiflex Trunk VWIC product and is by design. However, independent clocking sources can be supported on the 2-port T1/E1 VWIC2 product when both controllers are used for data-only purposes.

http://www.cisco.com/en/US/products/hw/routers/ps274/products_tech_note09186a00800b6e0f.shtml


0
 

Author Comment

by:orus
ID: 34140748
You are right, I see lots of slips on the 3640 with the dual card. So what do I need to do to resolve? . I think the 3640 only supports using one interface of the two port cards (limitation I believe I read about). Anyway, the 3640's config is in the code snippet below, with some sh commands. Here is the 2621xm config (single wic t1):

interface Serial0/0
 description ***Connected to SL PE's s0/0:1 interface***
 ip address 112.1.1.1 255.255.255.252
 encapsulation ppp
 tag-switching ip
 service-module t1 clock source internal
 service-module t1 timeslots 24


I have attached the 3640s config in the snippet here  
!
controller T1 0/0
 framing esf
 linecode b8zs
 channel-group 1 timeslots 24
!
controller T1 0/1
 framing sf
 linecode ami
!
!
!
!
!

sl-mpls-pe#sh int s0/0:1
Serial0/0:1 is up, line protocol is down
  Hardware is QUICC Serial
  Internet address is 112.1.1.2/30
  MTU 1500 bytes, BW 56 Kbit, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation PPP, LCP Listen, loopback not set
  Keepalive set (10 sec)
  Last input never, output 00:00:17, output hang never
  Last clearing of "show interface" counters 02:04:21
  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 42 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, 187 giants, 0 throttles
     242 input errors, 8 CRC, 84 frame, 0 overrun, 0 ignored, 150 abort
     1490 packets output, 20860 bytes, 0 underruns
     0 output errors, 0 collisions, 398 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions
  Timeslot(s) Used:24, SCC: 0, Transmitter delay is 0 flags
sl-mpls-pe#

sl-mpls-pe#sh controller t1 0/0
T1 0/0 is up.
  Applique type is Channelized T1
  Cablelength is long gain36 0db
  No alarms detected.
  alarm-trigger is not set
  Soaking time: 3, Clearance time: 10
  AIS State:Clear  LOS State:Clear  LOF State:Clear
  Version info Firmware: 20051006, FPGA: 20, spm_count = 0
  Framing is ESF, Line Code is B8ZS, Clock Source is Internal.
  Data in current interval (579 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     531 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     531 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 1:
     0 Line Code Violations, 0 Path Code Violations
     900 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     900 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 2:
     0 Line Code Violations, 0 Path Code Violations
     900 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     900 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 3:
     0 Line Code Violations, 0 Path Code Violations
     900 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     900 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 4:
     0 Line Code Violations, 0 Path Code Violations
     900 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     900 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 5:
     0 Line Code Violations, 0 Path Code Violations
     900 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     900 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 6:
     0 Line Code Violations, 0 Path Code Violations
     900 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     900 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 7:
     0 Line Code Violations, 0 Path Code Violations
     900 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     900 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 8:
     0 Line Code Violations, 0 Path Code Violations
     900 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     900 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 9:
     0 Line Code Violations, 0 Path Code Violations
     138 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     138 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 72 Unavail Secs
  Data in Interval 10:
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 11:
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 12:
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 13:
     1 Line Code Violations, 3047 Path Code Violations
     1 Slip Secs, 0 Fr Loss Secs, 1 Line Err Secs, 0 Degraded Mins
     1 Errored Secs, 0 Bursty Err Secs, 2 Severely Err Secs, 6 Unavail Secs
  Data in Interval 14:
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 15:
     0 Line Code Violations, 978 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 541 Unavail Secs
  Data in Interval 16:
     114 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 900 Unavail Secs
  Data in Interval 17:
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 900 Unavail Secs
  Total Data (last 17 15 minute intervals):
     115 Line Code Violations, 4025 Path Code Violations,
     7339 Slip Secs, 0 Fr Loss Secs, 1 Line Err Secs, 0 Degraded Mins,
     7339 Errored Secs, 0 Bursty Err Secs, 2 Severely Err Secs, 2419 Unavail Secs
sl-mpls-pe#

Open in new window

0
 
LVL 12

Accepted Solution

by:
Faruk Onder Yerli earned 2000 total points
ID: 34141035
I dont have so much experience on T1 connections. We were always using in europe E1. Normally both channel clock is ok it starts to work. please try second port on MFT unit. one of them can be master. it can get all signal from master port.  
0
 

Author Comment

by:orus
ID: 34141834
I dont have the "clock source primary" option. Its free-running, internal or line
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This program is used to assist in finding and resolving common problems with wireless connections.
In this article, the configuration steps in Zabbix to monitor devices via SNMP will be discussed with some real examples on Cisco Router/Switch, Catalyst Switch, NAS Synology device.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

810 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question