WIC T1-1DSU vs VWIC2-1MFT-T1/E1

Hi all

I'm looking at a router of production with a VWIC2-1MFT-T1/E1 module, and none of the two parts of the serial p2p connection configurations of clock rate. Now I know, the VWIC2-1MFT-T1/E1, everything is configured under the controller interface. However I don't see any orders as with the WIC-1DSU clock rate. How does this work? Does this mean that there is a CDU/CSU at this place? I'm just used to seeing the WIC-1DSU-T1 more and have not worked with before multiflex modules.

Thank you

Hello

If you have a WIC-1DSU-T1, WIC-1DSU-T1-V2 or HWIC-1DSU-T1, you pass under the clock interface source configuration and type of service-module t1:

3845_2 (config) #int serial 0/1/0

3845_2(Config-if) clock t1 source #-service module?

clock use internal adapter

clock to recover the line

You have 2 options here as you can see. Internal provides synchronization and line gets by synchronizing. In a circuit back to back, it is recommended to configure one end as 'internal', while the other is "online". If your provider is in the middle to provide synchronization for both ends, the configuration of the 'line' is recommended, but it depends on the specifications of the circuit. You can use the "show-service module" (don't forget the counters to see compensation costs statistics) command to see if there are synchronizing issues. Basically, you need to focus on the 'Dry' value, this leaflet. If it increases, it is recommended to check if the synchronization is correctly configured. Sometimes you need to get the vendor involved to confirm the right configuration of synchronization, you should have.

On the other hand, if you have a VWICX-XMFT-T1/E1 you must enter in the configuration of the controller and choose the right configuration of synchronization. It works essentially the same as in a WIC-1DSU-T1 hardware and similar.

T1 #controller 3845_1 (config) 0/0/0

3845_1(config-Controller) source of #clock?

race free Free Running Clock

Internal clock

recovered clock line

"The keyword which indicates a clock of free-running from the oscillator on the motherboard, which is used only for testing and back-to-back connections".

http://www.Cisco.com/en/us/docs/iOS/12_2/12_2z/12_2zj/feature/guide/gthwecan.html

To search for statistical use of the "show controllers t1 X/X/X" command and avoid using any command "loopback" so that it would affect the connection because it is used only for testing purposes. I hope this information helps and do not forget to note the useful messages.

Kind regards.

Tags: Cisco Network

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