From: ZeroFlash (Fire_Ice@verizon.net)
Date: Wed Mar 29 2006 - 08:52:55 GMT-3
Simone -- to your point at the time I was having a reachablity issues and
added them. Also, inverse arp is disabled so if the addresses aren't mapped
they won't know where to go.
Alexei --
It's a fully meshed design for the DLCI routes on the frame-switch.
Also, the reason for the dual interfaces is due that if you look at the
routing tables of R3 and R4 the next hop address is different even though
it's the same router on the same subnet. That was part of the requirement, I
don't think that secondary addresses will provide for that.
R3#sho ip route ospf
4.0.0.0/32 is subnetted, 1 subnets
O IA 4.4.4.4 [110/846] via 1.1.2.1, 00:06:45, Serial1/0
R4#sho ip route ospf
3.0.0.0/24 is subnetted, 1 subnets
O E2 3.3.3.0 [110/20] via 1.1.2.2, 00:08:02, Serial1/0
Thanks
ZeroFlash
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Alexei Monastyrnyi
Sent: Wednesday, March 29, 2006 2:41 AM
To: ZeroFlash
Cc: ccielab@groupstudy.com
Subject: Re: Question for Frame-relay
how do you switch between DLCIs on your FR switch?
on R2 you have DLCI 203 and 204 both of which have to be switched to 302
on one side and to 402 on the other.
why to have two sub-interfaces sharing the same /24 subnet? Secondary IP
no the physical interface with proper mapping would probably give you
what you need...
A.
on 29/03/2006 04:43 ZeroFlash wrote:
> Guys -
>
> Below is my configuration fro frame-relay and I was wondering if you can
> figure out what's wrong. For some reason one spoke will ping consistently
to
> the hub on both addresses but not the other spoke. The other spoke will in
> turn only get every other ping through. I don't understand what I'm doing
> wrong and wondering if you guys can help.
>
>
>
> Router 2 hub:
>
>
>
> interface Serial0/0
>
> no ip address
>
> encapsulation frame-relay
>
> !
>
> interface Serial0/0.1 point-to-point
>
> ip address 1.1.2.1 255.255.255.0
>
> frame-relay interface-dlci 203
>
> !
>
> interface Serial0/0.2 point-to-point
>
> ip address 1.1.2.2 255.255.255.0
>
> frame-relay interface-dlci 204
>
>
>
> Router 4 Spoke:
>
>
>
> interface Serial1/0
>
> ip address 1.1.2.4 255.255.255.0
>
> encapsulation frame-relay
>
> frame-relay map ip 1.1.2.1 402 broadcast
>
> frame-relay map ip 1.1.2.2 402 broadcast
>
> frame-relay map ip 1.1.2.3 402 broadcast
>
> frame-relay map ip 1.1.2.4 402
>
> no frame-relay inverse-arp
>
>
>
>
>
> Router 3 Spoke:
>
>
>
> interface Serial1/0
>
> ip address 1.1.2.3 255.255.255.0
>
> encapsulation frame-relay
>
> frame-relay map ip 1.1.2.1 302 broadcast
>
> frame-relay map ip 1.1.2.2 302 broadcast
>
> frame-relay map ip 1.1.2.3 302
>
> frame-relay map ip 1.1.2.4 302 broadcast
>
> no frame-relay inverse-arp
>
>
>
>
>
> R4#ping 1.1.2.1
>
> Type escape sequence to abort.
>
> Sending 5, 100-byte ICMP Echos to 1.1.2.1, timeout is 2 seconds:
>
> !.!.!
>
> Success rate is 60 percent (3/5), round-trip min/avg/max = 56/57/60 ms
>
>
>
>
>
> R3#ping 1.1.2.2
>
> Type escape sequence to abort.
>
> Sending 5, 100-byte ICMP Echos to 1.1.2.2, timeout is 2 seconds:
>
> !!!!!
>
> Success rate is 100 percent (5/5), round-trip min/avg/max = 60/81/116 ms
>
> R3#ping 1.1.2.1
>
> Type escape sequence to abort.
>
> Sending 5, 100-byte ICMP Echos to 1.1.2.1, timeout is 2 seconds:
>
> !!!!!
>
> Success rate is 100 percent (5/5), round-trip min/avg/max = 56/92/116 ms
>
>
>
> Debug from R2:
>
>
>
> 03:17:43: ICMP: time exceeded (time to live) sent to 1.1.2.3 (dest was
> 1.1.2.4)
>
> R2#
>
> 03:17:45: ICMP: time exceeded (time to live) sent to 1.1.2.3 (dest was
> 1.1.2.4)
>
> R2#
>
> 03:22:06: ICMP: echo reply sent, src 1.1.2.1, dst 1.1.2.4
>
> 03:22:06: ICMP: echo reply sent, src 1.1.2.1, dst 1.1.2.4
>
> R2#
>
> 03:22:08: ICMP: echo reply sent, src 1.1.2.1, dst 1.1.2.4
>
> 03:22:08: ICMP: echo reply sent, src 1.1.2.1, dst 1.1.2.4
>
> R2#
>
> 03:22:10: ICMP: echo reply sent, src 1.1.2.1, dst 1.1.2.4
>
> R2#
>
> 03:22:13: ICMP: time exceeded rcvd from 1.1.2.3
>
> R2#
>
> 03:22:15: ICMP: time exceeded rcvd from 1.1.2.3
>
> R2#
>
> 03:24:14: ICMP: echo reply sent, src 1.1.2.2, dst 1.1.2.3
>
> 03:24:14: ICMP: echo reply sent, src 1.1.2.2, dst 1.1.2.3
>
> 03:24:14: ICMP: echo reply sent, src 1.1.2.2, dst 1.1.2.3
>
> 03:24:14: ICMP: echo reply sent, src 1.1.2.2, dst 1.1.2.3
>
> 03:24:14: ICMP: echo reply sent, src 1.1.2.2, dst 1.1.2.3
>
>
>
>
>
> See I don't get it
>
>
>
>
>
> Thanks
>
>
>
>
>
> ZeroFlash
>
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