Cell Relay Archive

[Rajagopalan Kothandaraman <k_raj@wipinfo.soft.net>]

Hi,

My answers are embedded below. Correct me if i am wrong.

On Mon, 23 Feb 1998, Venkatesh Kumar M. wrote:

> Hi all,
> 	I am working on an IMA implementation project. I have a small 
> doubt regarding the  meaning of "Mis-connected link" mentioned in the specs.
> 
> * What EXACTLY is "Mis-connected"??
> 

Assume that there are 4 IMA groups. Let us assume that the following links 
need to be configured in these 4 groups.

        ----------------------------
        End System A   End System B
        ----------------------------
          Grp 1           Grp 2      
            2               2       // these are physical link numbers
            3               3       // Just for Physical link identification
          Grp 3           Grp 4
            4               4  
            5               5
        ----------------------------
( Assume that Ima groups 1 & 3 (just to identify the group) are in End 
  System A and Ima groups 2 & 4 are in End System B). 

Intead of connecting Phy link # 2 in End System A to Phy link # 2 in End
System B, the operator connects Phy Link # 2 of A to # 4 of B and
Phy link #4 of A to # 2 of B. This is what is termed as mis-connection where
the configured links of one group are not connected to the intended links in
the other end IMA group but MISCONNECTED to some other IMA group (could also
be in some other End system).
           
> * How do you find if a link is "Mis-connected"?
> 

By using the test pattern procedure defined in section 13 of Forum Spec. 

> * How does this condition affect the LSM's and GSM. 
> 

LSMs and GSM may/will get wrong (not that of the intended group) FE events by 
parsing the ICP cell from the misconnected link(s). 
 
Hope this helps.

Regards,
Raj

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  Rajagopalan Kothandaraman,        e-mail : k_raj@wipinfo.soft.net
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