:) Layer 2 issue... back-to-back frame-relay using

From: Lee Carter (l2carter@yahoo.com)
Date: Sat Jun 25 2005 - 19:31:02 GMT-3


Ok,

I have been working on back-to-back frame-realy (no
frame-realy switch in the middle (had one PVC working
just fine) then I decided to add a second PVC using
ppp and virtual-template...

The odd thing is that I can get CDP thru the link so I
know layer 2 is working (at least somewhat) but layer
3 (ICMP) doesn't work at all.

Here's my configuration:

R7(s1/0)------(*S0)R8 <-- *=DCE End

R8)
interface Virtual-Template1
 ip address 172.16.87.1 255.255.255.252
!
interface Serial0
 no ip address
 encapsulation frame-relay
 no keepalive
 no fair-queue
 clockrate 125000
 frame-relay intf-type dce
!
interface Serial0.78 point-to-point
 ip address 172.16.78.2 255.255.255.252
 frame-relay interface-dlci 78
!
interface Serial0.87 point-to-point
 frame-relay interface-dlci 87 ppp Virtual-Template1

R7)
interface Virtual-Template1
 ip address 172.16.87.2 255.255.255.252
!
interface Serial1/0
 no ip address
 encapsulation frame-relay
 no keepalive
 no fair-queue
!
interface Serial1/0.78 point-to-point
 ip address 172.16.78.1 255.255.255.252
 frame-relay interface-dlci 78
!
interface Serial1/0.87 point-to-point
 frame-relay interface-dlci 87 ppp Virtual-Template1

----R7's CDP Table.-----------------------------------

Notice the PPP link is using the loopback as the IP
address to represent the IP... is this normal? Why
does this happen if it is?

Device ID: R8
Entry address(es):
  IP address: 192.168.8.8
Platform: cisco 4700, Capabilities: Router
Interface: Serial1/0.87, Port ID (outgoing port):
Serial0.87
Holdtime : 144 sec

Version :
Cisco Internetwork Operating System Software
IOS (tm) 4500 Software (C4500-JK9S-M), Version
12.2(27), RELEASE SOFTWARE (fc3)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Wed 03-Nov-04 01:11 by kellmill

advertisement version: 2

R7#sh cdp neighbors serial 1/0.78 detail
-------------------------
Device ID: R8
Entry address(es):
  IP address: 172.16.78.2
Platform: cisco 4700, Capabilities: Router
Interface: Serial1/0.78, Port ID (outgoing port):
Serial0.78
Holdtime : 153 sec

Version :
Cisco Internetwork Operating System Software
IOS (tm) 4500 Software (C4500-JK9S-M), Version
12.2(27), RELEASE SOFTWARE (fc3)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Wed 03-Nov-04 01:11 by kellmill

advertisement version: 2

R7#

                



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