Re: "VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1"

Answered Question
Jul 21st, 2008
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Hi,

Below is part of the 'sh version' and 'sh inventory' command respectively.


-----------------------------------------

Cisco 2821 (revision 53.51) with 514048K/10240K bytes of memory.

Processor board ID FTX1108A2RS

4 FastEthernet interfaces

2 Gigabit Ethernet interfaces

2 Serial interfaces

2 Channelized T1/PRI ports

DRAM configuration is 64 bits wide with parity enabled.

239K bytes of non-volatile configuration memory.

125440K bytes of ATA CompactFlash (Read/Write)


-----------------------------------------


#sh inventory

NAME: "2821 chassis", DESCR: "2821 chassis"

PID: CISCO2821 , VID: V03 , SN: FTX1108A2RS


NAME: "VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1", DESCR: "VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1"

PID: VWIC2-2MFT-T1/E1 , VID: V01 , SN: FOC120340EA


NAME: "4 Port FE Switch", DESCR: "4 Port FE Switch"

PID: HWIC-4ESW , VID: V01 , SN: FOC11052KFJ


-----------------------------------------


My q is that I am confused as I do not see any serial interfaces on the 'sh inventory' command

but under the 'sh version' command, it says that there are '2 serial interaces'.


Can someone explain to me what does this mean ?


Thank you,


Cheers,

- InternetB -

Correct Answer by Sushil Kumar Katre about 8 years 10 months ago

I guess that your query is that you see 2 serial interfaces under show version but do not see any serial interface *module* under show inventory.


I guess there is no serial interface on the router. What you have is two modules HWIC-4ESW and VWIC2-2MFT-T1/E1.


So you have 4 FE interfaces and 2 T1/E1 interfaces.


Now the question is why show interface is showing 2 serial interfaces, its becasue VWICs can be used for regular DATA cnnectivity just like serial interfaces. Its considering those 2 T1/E1 interfaces of VWIC as serial interface as well.


Lokks like a cosmetic issue with the output. rather it should be -


2 serial/T1/E1 interfaces


-> Sushil

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senthuran Mon, 07/21/2008 - 22:41
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#sh inventory- displays inventory information about each Cisco product in the form of a unique device identifier (UDI).The Cisco UDI is of 3 separate data elements: a PID to order a Cisco product, version identifier (VID), and the serial number


#sh version -shows various software options compiled in.

you have to configure the router to recogonize the VWIC card after installation.


InternetB Mon, 07/21/2008 - 22:44
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Hi Senthuran,

I know the difference between 'sh inventory' and 'sh version'.


My q is that I am confused as I do not see any serial interfaces on the 'sh inventory' command but under the 'sh version' command, it says that there are '2 serial interaces'.


The above is my question.


Thank you,


Cheers,

- InternetB -

senthuran Tue, 07/22/2008 - 00:28
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as i posted earlier,

sh inventory will give you the the hardware information of the module


sh ver-gives u the software information supported on module

since VWIC card can be used as a std WIC card,u see the serial interface appear on the config.You will not get the serial interface untill you configure the controllers.

Correct Answer
Sushil Kumar Katre Tue, 07/22/2008 - 01:07
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I guess that your query is that you see 2 serial interfaces under show version but do not see any serial interface *module* under show inventory.


I guess there is no serial interface on the router. What you have is two modules HWIC-4ESW and VWIC2-2MFT-T1/E1.


So you have 4 FE interfaces and 2 T1/E1 interfaces.


Now the question is why show interface is showing 2 serial interfaces, its becasue VWICs can be used for regular DATA cnnectivity just like serial interfaces. Its considering those 2 T1/E1 interfaces of VWIC as serial interface as well.


Lokks like a cosmetic issue with the output. rather it should be -


2 serial/T1/E1 interfaces


-> Sushil

InternetB Tue, 07/22/2008 - 01:22
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Hi Sushil,

This answers my q ... :)


Thank you,


Cheers,

- InternetB -

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