RE: Arp not getting resolved in case of Bridging over

Are you sure the interface isn't bouncing? For back to back you need "no
keepalive" as there is no frame-switch to send LMI.

Regards,
 
Tyson Scott - CCIE #13513 R&S, Security, and SP
Managing Partner / Sr. Instructor - IPexpert, Inc.
Mailto: tscott_at_ipexpert.com

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Sonu
Khandelwal (sokhande)
Sent: Saturday, July 31, 2010 3:26 AM
To: ccielab_at_groupstudy.com
Subject: Arp not getting resolved in case of Bridging over frame-relay

Hi All,
I have back to back connected routers like this:

R1(se2/0)----(se2/0)R2

I have configured bridging over frame-relay cloud. Its some how not
working for me. When I try back to back ping for BVI interface, it
fails. While debugging more I see that arp does not get resolved. On
enabling debug arp I see following messages. Seems like somehow R2 is
not getting arp reply which R1 sent.

say I send ping from R2:

message at R2:

R2#ping 60.1.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 60.1.1.1, timeout is 2 seconds:

*Jul 31 07:08:57.055: IP ARP: creating incomplete entry for IP address:
60.1.1.1 interface BVI1
*Jul 31 07:08:57.055: IP ARP: sent req src 60.1.1.2 0000.0c48.04b0,
                 dst 60.1.1.1 0000.0000.0000 BVI1.
*Jul 31 07:08:59.059: IP ARP: sent req src 60.1.1.2 0000.0c48.04b0,
                 dst 60.1.1.1 0000.0000.0000 BVI1.
*Jul 31 07:09:01.059: IP ARP: sent req src 60.1.1.2 0000.0c48.04b0,
                 dst 60.1.1.1 0000.0000.0000 BVI1.
*Jul 31 07:09:03.059: IP ARP: sent req src 60.1.1.2 0000.0c48.04b0,
                 dst 60.1.1.1 0000.0000.0000 BVI1.
*Jul 31 07:09:05.059: IP ARP: sent req src 60.1.1.2 0000.0c48.04b0,
                 dst 60.1.1.1 0000.0000.0000 BVI1.
Success rate is 0 percent (0/5)
R2#

Message at R1:

R1#
*Jul 31 07:08:57.211: IP ARP: rcvd req src 60.1.1.2 0000.0c48.04b0, dst
60.1.1.1 BVI1
*Jul 31 07:08:57.211: IP ARP: creating entry for IP address: 60.1.1.2,
hw: 0000.0c48.04b0
*Jul 31 07:08:57.211: IP ARP: sent rep src 60.1.1.1 0000.0c31.0448,
                 dst 60.1.1.2 0000.0c48.04b0 BVI1
R1#
*Jul 31 07:08:59.211: IP ARP: rcvd req src 60.1.1.2 0000.0c48.04b0, dst
60.1.1.1 BVI1
*Jul 31 07:08:59.211: IP ARP: sent rep src 60.1.1.1 0000.0c31.0448,
                 dst 60.1.1.2 0000.0c48.04b0 BVI1
R1#
*Jul 31 07:09:01.211: IP ARP: rcvd req src 60.1.1.2 0000.0c48.04b0, dst
60.1.1.1 BVI1
*Jul 31 07:09:01.211: IP ARP: sent rep src 60.1.1.1 0000.0c31.0448,
                 dst 60.1.1.2 0000.0c48.04b0 BVI1
R1#
*Jul 31 07:09:03.211: IP ARP: rcvd req src 60.1.1.2 0000.0c48.04b0, dst
60.1.1.1 BVI1
*Jul 31 07:09:03.211: IP ARP: sent rep src 60.1.1.1 0000.0c31.0448,
                 dst 60.1.1.2 0000.0c48.04b0 BVI1
R1#
*Jul 31 07:09:05.211: IP ARP: rcvd req src 60.1.1.2 0000.0c48.04b0, dst
60.1.1.1 BVI1
*Jul 31 07:09:05.211: IP ARP: sent rep src 60.1.1.1 0000.0c31.0448,
                 dst 60.1.1.2 0000.0c48.04b0 BVI1
R1#

configs from R1:

R1#sh run int se 2/0
Building configuration...

Current configuration : 233 bytes
!
interface Serial2/0
 no ip address
 encapsulation frame-relay
 ipv6 ospf network broadcast
 serial restart-delay 0
 frame-relay map bridge 16 broadcast
 frame-relay interface-dlci 16
 frame-relay intf-type dce
 bridge-group 1
end

R1#sh run | sec bridge
bridge irb
 frame-relay map bridge 16 broadcast
 bridge-group 1
bridge 1 protocol ieee
bridge 1 route ip
R1#

R1#sh run int bv1
Building configuration...

Current configuration : 57 bytes
!
interface BVI1
 ip address 60.1.1.1 255.255.255.0
end

R1#

configs from R2:

R2#sh run int se 2/0
Building configuration...

Current configuration : 208 bytes
!
interface Serial2/0
 no ip address
 encapsulation frame-relay
 serial restart-delay 0
 frame-relay map bridge 16 broadcast
 frame-relay interface-dlci 16
 frame-relay interface-dlci 17
 bridge-group 1
end

R2#sh run | sec bridge
bridge irb
 frame-relay map bridge 16 broadcast
 bridge-group 1
bridge 1 protocol ieee
R2#

R2#sh run int bvi1
Building configuration...

Current configuration : 57 bytes
!
interface BVI1
 ip address 60.1.1.2 255.255.255.0
end

R2#

Frame-relay Map:

R1#sfm
Serial2/0 (up): bridge dlci 16(0x10,0x400), static,
              broadcast,
              CISCO, status defined, active
R1#

R2#sfm
Serial2/0 (up): bridge dlci 16(0x10,0x400), static,
              broadcast,
              CISCO, status defined, active
R2#

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Received on Sat Jul 31 2010 - 14:46:28 ART