Re: Arp not getting resolved in case of Bridging over

Keith,

What is/are the keys to making this bridging work in your config?

Is it the 'frame-relay switching' peice or the combo of that and the
'frame-relay map bridge 16 broadcast'...

Just trying to understand this concept a little more, because I tried it
with just the 'frame-relay map bridge 16 broadcast' with the 'bridge irb'
and bridge group configuration and it didnt work for me...

Thanks..
Garry..

On Sat, Jul 31, 2010 at 10:53 PM, Keith Barker <kbarker_at_ine.com> wrote:

> Hello Sonu -
>
> Here is a working configuration for you.
>
> Simply modify the interface numbers and IP addresses to protect the
> innocent. :)
>
>
> R1
>
>
> conf t
>
> default int ser 0/0
>
> frame-relay switching
>
> bridge 1 protocol ieee
>
> int ser 0/0
>
> no shut
>
> no keep
>
> clock rate 64000
>
> encapsulation frame-relay
>
> serial restart-delay 0
>
> frame-relay map bridge 16 broadcast
>
> frame-relay interface-dlci 16
>
> frame-relay intf-type dce
>
> bridge-group 1
>
> exit
>
> bridge irb
>
> bridge 1 route ip
>
> interface BVI1
>
> ip address 10.0.0.1 255.0.0.0
>
> end
>
>
>
>
>
>
>
> R2
>
>
>
> conf t
>
> default int ser 0/0
>
> frame-relay switching
>
> bridge 1 protocol ieee
>
>
>
> int ser 0/0
>
> no shut
>
> no keep
>
> clock rate 64000
>
> encapsulation frame-relay
>
> serial restart-delay 0
>
> frame-relay map bridge 16 broadcast
>
> frame-relay interface-dlci 16
>
> frame-relay intf-type dce
>
> bridge-group 1
>
> exit
>
> bridge irb
>
> bridge 1 route ip
>
> interface BVI1
>
> ip address 10.0.0.2 255.0.0.0
>
>
> end
>
>
> Best wishes,
>
> Keith H. Barker, CCIE #6783
> Instructor
> kbarker_at_ine.com
> Internetwork Expert, Inc.
> http://ine.com
> Toll Free: 877-224-8987
> Outside US: 775-826-4344
>
> On Jul 31, 2010, at 12:26 AM, Sonu Khandelwal (sokhande) wrote:
>
> > 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 Sun Aug 01 2010 - 10:09:01 ART