If you do a search on Cisco's site, it explains why this is happening...
The thing is, if you ping your own interface, the icmp reply that you get
from it is actually coming from the neighboring device... ie, mapped by the
dlci that is why on a point-to-point interface, there is only one neighbor
and it knows to send the reply back.
On a multipoint interface, you can have multiple neighboring routers and it
won't know which one will reply to the icmp packet sent.
Kenneth
Ken Vandenbark <[EMAIL PROTECTED]> wrote in message
009a01c08ec0$06a64980$0a0a18ac@kvandenbark">news:009a01c08ec0$06a64980$0a0a18ac@kvandenbark...
> What's difference? Why can you not ping my own multipoint interface but
> if it is a point to point is does work? See below
> =20
> interface Serial1
> no ip address
> encapsulation frame-relay
> !
> interface Serial1.1 multipoint
> ip address 10.1.1.1 255.255.255.252
> frame-relay interface-dlci 110
> !
> router igrp 10
> network 10.0.0.0
> 1
> commserver#ping 10.1.1.1
> =20
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:
> .....
> Success rate is 0 percent (0/5)
> ------------------------------------------------------------------------=
>
> ------------------------------
> interface Serial0
> no ip address
> encapsulation frame-relay
> no fair-queue
> !
> interface Serial0.1 point-to-point
> ip address 10.1.1.1 255.255.255.252
> frame-relay interface-dlci 110 =20
> !
> interface Serial1
> no ip address
> encapsulation frame-relay
> shutdown
> !
> router igrp 10
> network 10.0.0.0
> !
> =20
> commserver#ping 10.1.1.1
> =20
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max =3D =
> 112/116/128
> ms
>
> _________________________________
> FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>
_________________________________
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
