this make sense, thanks..
Grad
From: Arthur Simplina
Reply-To: Arthur Simplina
To: [EMAIL PROTECTED]
Subject: RE: QUERY ON FRAME RELAY, Can't ping to it's own i [7:13875]
Date: Sat, 28 Jul 2001 00:28:01 -0400
I am not an expert in frame relay but let me share my experience in the
classroom lab where we did this exercise on frame relay.
I have the same situation where from the local router I can't ping the
interface that is connected to the frame relay. I also cannot ping the
ethernet ip address of another router in the other frame relay connection.
I was asked that question why I can't ping the local interface with the
frame relay connection. I can't seem to find an answer but managed to say
that since the ping command is on the layer 3 and the serial interface in
encapsulated in frame relay (which is layer 2), so the ping command fails
as
it cannot locate the layer 3 ip address of the serial interface that is
mapped to the dlci which is layer 2. I hope that it makes sense and you got
my point.
As to why I cannot ping the ethernet ip address of the other router, the
reason is that the ping source ip address carries the serial interface ip
address that is inversed mapped to the frame relay connection which it
cannot locate and that is why it fails. But if I do an extended ping
specifying the source ip address of the ethernet of the local router, the
ping is successful which means that I have a full connectivity across the
frame relay cloud to the other LAN segments of the other routers.
Perhaps, a frame relay expert could clarify this further.
Cheers,
Art S.
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