RE: Question for Frame-relay

From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Wed Mar 29 2006 - 01:49:43 GMT-3


You won't have problems reaching the loopbacks due to how they appear in
the routing tables:

R2#sho ip route ospf
3.0.0.0/24 is subnetted, 1 subnets
O E2 3.3.3.0 [110/20] via 1.1.2.3, 00:00:09, Serial0/0.1 <--
4.0.0.0/32 is subnetted, 1 subnets
O IA 4.4.4.4 [110/65] via 1.1.2.4, 00:00:09, Serial0/0.2 <--

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 7:53 PM
To: ccielab@groupstudy.com
Subject: RE: Question for Frame-relay

Sorry this is so long, but I thought I was really interesting to see
that it
worked.

Router R2 Hub Router:

R2#sho ip route ospf
3.0.0.0/24 is subnetted, 1 subnets
O E2 3.3.3.0 [110/20] via 1.1.2.3, 00:00:09, Serial0/0.1
4.0.0.0/32 is subnetted, 1 subnets
O IA 4.4.4.4 [110/65] via 1.1.2.4, 00:00:09, Serial0/0.2

R2#ping 3.3.3.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 3.3.3.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/57/60 ms
R2#ping 4.4.4.4
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/58/61 ms
R2#sho ip ospf nei
Neighbor ID Pri State Dead Time Address
Interface
3.3.3.3 0 FULL/DROTHER 00:01:51 1.1.2.3
Serial0/0.1
4.4.4.4 1 FULL/ - 00:00:33 1.1.2.4
Serial0/0.2
R2#

Router R3 Spoke:

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
R3#ping 4.4.4.4
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 112/114/116
ms
R3#
R3#sho ip ospf nei
Neighbor ID Pri State Dead Time Address
Interface
2.2.2.2 1 FULL/DR 00:01:40 1.1.2.1
Serial1/0

Router R4 Spoke:

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
R4#ping 3.3.3.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 3.3.3.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 113/115/116
ms
R4#sho ip ospf nei
Neighbor ID Pri State Dead Time Address
Interface
2.2.2.2 1 FULL/ - 00:00:38 1.1.2.2
Serial1/0
R4#

Thanks

ZeroFlash

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
ZeroFlash
Sent: Tuesday, March 28, 2006 10:31 PM
To: ccielab@groupstudy.com
Subject: RE: Question for Frame-relay

Guys --
It's the weirdest thing. No configuration change or anything I reloaded
the
routers and it magically worked. I don't get it, why didn't it work to
start
with??

ZeroFlash

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
ZeroFlash
Sent: Tuesday, March 28, 2006 9:44 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



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