RE: Question for Frame-relay

From: ZeroFlash (Fire_Ice@verizon.net)
Date: Wed Mar 29 2006 - 00:44:20 GMT-3


All --
I'm going to send the configurations, I reloaded R2 and everything works, I
now have OSPF running and ping loop backs across the hub router and full
adjacencies.

Thanks

ZeroFlash

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Brian Dennis
Sent: Tuesday, March 28, 2006 10:38 PM
To: ZeroFlash; ccielab@groupstudy.com
Subject: RE: Question for Frame-relay

You have the same IP subnet attached to two subinterfaces on R2 which is
causing the router to send traffic over the two subinterfaces.

Think about it from R2's perspective, how does it know which of the two
subinterfaces to send packets out of to reach a destination on the
1.1.2.0/24 subnet? The answer is that it doesn't know so it sends the
packets out both subinterfaces and hence the "!.!.!." response to the
pings.

HTH,

Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
 
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)

 -----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
ZeroFlash
Sent: Tuesday, March 28, 2006 6:44 PM
To: ccielab@groupstudy.com
Subject: Question for Frame-relay

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



This archive was generated by hypermail 2.1.4 : Sat Apr 01 2006 - 10:07:40 GMT-3