Re: Frame-relay again

Narbik,

I said:
  As Christopher found, if you disable LMI at the FRsw, ping works.
  That means disabling LMI at both links, to R1 and to R2.
  But if you enable LMI at just one, any one, it works too.

That means disabling LMI at both DTEs and *one* FRsw end.
That test you did not do.

Adam, AFAIK, dynamips does not support LMI so I'm not using its
integrated FR support.

Narbik Kocharians @ 26/08/2010 23:46 -0300 dixit:
> This is my finding, i did not want to get on the racks but i thought it
> could help some people:
> *First TEST:*
> R1 (LMI  ON)
> FR(SW) S0/1 (LMI ON)
> FR(SW) S0/2 (LMI  ON)
> R2 (LMI  ON)
> *Pings** are successful*
>
> *Second TEST:*
> R1 (LMI  OFF)
> FR(SW) S0/1 (LMI  ON)
> FR(SW) S0/2 (LMI  ON)
> R2 (LMI  ON)
> *Pings** are NOT successful*. A Show PVC on R2 will show the following:
>
> *Third TEST:*
> R1 (LMI  OFF)
> FR(SW) S0/1 (LMI  ON)
> FR(SW) S0/2 (LMI  ON)
> R2 (LMI  OFF)
> *Pings** are NOT successful*
>
> *Forth TEST:*
> R1 (LMI  OFF)
> FR(SW) S0/1 (LMI  OFF)
> FR(SW) S0/2 (LMI  OFF)
> R2 (LMI  OFF)
> *Pings** are successful*, because none of the devices are expecting
> keepalives from their directly connected device.
>
> *Fifth TEST:*
> R1 (LMI  ON)
> FR(SW) S0/1 (LMI  OFF)
> FR(SW) S0/2 (LMI  OFF)
> R2 (LMI  ON)
> *Pings** are NOT successful.*
>
> *Sixth TEST:*
> R1 (LMI  ON)
> FR(SW) S0/1 (LMI  OFF)
> FR(SW) S0/2 (LMI  ON)
> R2 (LMI  ON)
>
> *Pings** are NOT successful.*
>

-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net