Re: Arp not getting resolved in case of Bridging over

No need for no keepalive as one of the routers will act as a switch and send
LMI.

http://www.cisco.com/en/US/tech/tk713/tk237/technologies_configuration_example09186a0080094a3c.shtml

Command Summary

Router1 is configured to function as a hybrid Frame Relay switch and respond
to LMI enquires sent by Router 2. The global command *frame-relay
switching* enables
permanent virtual circuit (PVC) switching on Router1. The interface command
*frame-relay intf-type dce* enables Router1 to function as a switch
connected to a router. The *no keepalive*command has not been added to
either router. No special configuration is needed for Router2.

Cheers

On Sat, Jul 31, 2010 at 7:46 PM, Tyson Scott <tscott_at_ipexpert.com> wrote:

> 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 - 20:03:15 ART