From: Jo Knight (joknight@gmail.com)
Date: Sat Sep 29 2007 - 12:06:39 ART
Hi GS,
I would like to clarify this with you guys if possible. The scenario is
as follows:
Create a fully meshed frame relay network between R1 R2 R3 and R5, using
physical interfaces and NO static layer 3 to layer 2 mappings.
This may sounds pretty basic, but I just do not understand why this is
working in this way.
I have just labbed up the following:
R1
interface Serial0/0
ip address 10.1.1.1 255.255.255.0
encapsulation frame-relay
R2
interface Serial0/0
ip address 10.1.1.2 255.255.255.0
encapsulation frame-relay
R3
interface Serial2/0
ip address 10.1.1.3 255.255.255.0
encapsulation frame-relay
R5
interface Serial0/0
ip address 10.1.1.5 255.255.255.0
encapsulation frame-relay
My PVC's look like this
R1
DLCI = 102, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/0
DLCI = 103, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/0
DLCI = 105, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/0
R2
DLCI = 201, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/0
DLCI = 203, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/0
DLCI = 205, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/0
R3
DLCI = 301, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial2/0
DLCI = 302, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial2/0
DLCI = 305, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial2/0
R5
DLCI = 501, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/0
DLCI = 502, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/0
DLCI = 503, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/0
I brought all the Serial interfaces up and waited for all the PVC to
become active as detailed above, then issued a 'show frame map' command,
but no dynamic mappings were created. These were only created after I
reloaded each of the routers.
It seems to me this is a huge waste of time, surely if we need to do
this in the lab there is another way to force the mappings to become active?
Any pointers would be appreciated!
Thanks,
Jo
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