Jason, are you trying to ping your local frame relay
interface? If this is the case you will not be able
to ping it because the interface does not have a map
to itself. It is not like a normal serial interface.
In frame-relay you have 2 ways of applying DLCIs to an
interface. You can use the frame-relay interface-dlci
command or a frame-relay map statement. If you use
the interface-dlci command, I believe you should be
able to ping your local interface. If you are using a
map statement, then you would have to add a map
statement pointing to the local IP address. Frame
relay invers-arp can also be used. But, again this
will only map far end IPs to dlci's.
Hope this helps....
William Swedberg CCNP CCDP
--- Sa�a Milic <[EMAIL PROTECTED]> wrote:
> "Yee, Jason" wrote:
> >
> > I can't ping or traceroute to my serial port , I
> suspect is access list but
> > I am doing it on the router so it should not have
> any access-list issues
> > right
>
>
> Yee,
>
> when you ping serial interface from the router,
> icmp-echo packets
> travel over serial link to the other side where they
> are forwarded
> to your router. Then, your router respond with
> icmp-echo-response
> packets which travel the same path !
>
> To clear this, suppose you have routers A and B on a
> WAN link:
>
> A <------> B
>
> What is happening is:
>
> 1. You start ping on A
> 2. A send icmp-echo packet to B
> 3. B forwards packets to A
> 4. A answers and send echo-response to B
> 5. B forwards packets to A
> 6. You got '!' on A
>
> So, access-lists on the other side of the WAN link
> play a role !
>
>
> Hope this helps.
>
> Sa�a, CCNP
>
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