From: Richard Dumoulin (Richard.Dumoulin@vanco.fr)
Date: Sun Nov 05 2006 - 09:54:49 ART
Hi Rodrigo,
I tried your config and for me it worked. When I first built the tunnel it did not come up and I was having "encapsulation failed" messages on the debug ip nhrp on R5 so I deleted the tunnel on R2 and paste it back.
You did not send the config off R5 so I had to guess it:
Rack1R5#sh ip nhrp
100.0.0.2/32 via 100.0.0.2, Tunnel1245 created 00:01:39, expire 01:58:46
Type: dynamic, Flags: authoritative unique registered
NBMA address: 150.50.2.2
Rack1R2#sh ip nhrp
100.0.0.5/32 via 100.0.0.5, Tunnel1245 created 00:01:16, never expire
Type: static, Flags: authoritative used
NBMA address: 150.50.5.5
Rack1R5#sh run int se 1/0.1245
Building configuration...
Current configuration : 188 bytes
!
interface Serial1/0.1245 multipoint
ip address 136.1.0.5 255.255.255.0
ip ospf network point-to-multipoint
frame-relay map ip 136.1.0.2 201 broadcast
no frame-relay inverse-arp
end
Rack1R5#sh run int tun 1245
Building configuration...
Current configuration : 237 bytes
!
interface Tunnel1245
ip address 100.0.0.5 255.255.255.0
no ip redirects
ip nhrp authentication CISCO
ip nhrp map multicast dynamic
ip nhrp network-id 1245
tunnel source Loopback1
tunnel mode gre multipoint
tunnel key 1245
end
Rack1R2#sh ip nhrp
100.0.0.5/32 via 100.0.0.5, Tunnel1245 created 00:01:16, never expire
Type: static, Flags: authoritative used
NBMA address: 150.50.5.5
Rack1R2#sh run int se 1/0.1245
Building configuration...
Current configuration : 208 bytes
!
interface Serial1/0.1245 multipoint
ip address 136.1.0.2 255.255.255.0
ip ospf network point-to-multipoint
ip ospf priority 0
frame-relay map ip 136.1.0.5 102 broadcast
no frame-relay inverse-arp
end
Rack1R2#sh run int tun 1245
Building configuration...
Current configuration : 297 bytes
!
interface Tunnel1245
ip address 100.0.0.2 255.255.255.0
no ip redirects
ip nhrp authentication CISCO
ip nhrp map 100.0.0.5 150.50.5.5
ip nhrp map multicast 150.50.5.5
ip nhrp network-id 1245
ip nhrp nhs 100.0.0.5
tunnel source Loopback1
tunnel mode gre multipoint
tunnel key 1245
end
-- Richard
-----Message d'origine-----
De : nobody@groupstudy.com [mailto:nobody@groupstudy.com] De la part de Rodrigo Paes
Envoyi : Saturday, November 04, 2006 9:43 PM
@ : security@groupstudy.com; ccielab@groupstudy.com
Objet : Multipoint GRE Tunnel and FR
Hi GS,
anyone can give an answer and point me to an url that explains why the first config works and the second doesn't ?
Rack1R3#sh run int s2/0.1245
Building configuration...
Current configuration : 175 bytes
!
interface Serial2/0.1245 point-to-point
ip address 136.1.0.3 255.255.255.0
ip ospf network point-to-multipoint
ip ospf priority 0
frame-relay interface-dlci 305
end
Rack1R3#
Rack1R3#sh run int tu1245
Building configuration...
Current configuration : 318 bytes
!
interface Tunnel1245
ip address 100.0.0.3 255.255.255.0
no ip redirects
ip nhrp authentication CISCO
ip nhrp map 100.0.0.5 150.50.5.5
ip nhrp map multicast 150.50.5.5
ip nhrp network-id 1245
ip nhrp holdtime 30
ip nhrp nhs 100.0.0.5
tunnel source Loopback0
tunnel mode gre multipoint
tunnel key 1245
end
Rack1R3#
T-SERVER#5
[Resuming connection 5 to R5 ... ]
Rack1R5#
Rack1R5#sh ip nhrp
100.0.0.3/32 via 100.0.0.3, Tunnel1245 created 00:06:41, expire 00:00:22
Type: dynamic, Flags: authoritative unique registered used
NBMA address: 150.50.3.3
Rack1R5#
Rack1R5#
this one doesn't ... and the only difference is the that this one is "multipoint" instead of "point-to-point"
Rack1R2#sh run int s2/0.1245
Building configuration...
Current configuration : 276 bytes
!
interface Serial2/0.1245 multipoint
ip address 136.1.0.2 255.255.255.0
ip ospf network point-to-multipoint
ip ospf priority 0
frame-relay map ip 136.1.0.1 205
frame-relay map ip 136.1.0.4 205
frame-relay map ip 136.1.0.5 205 broadcast
no frame-relay inverse-arp
end
Rack1R2#
Rack1R2#sh run int tu1245
Building configuration...
Current configuration : 297 bytes
!
interface Tunnel1245
ip address 100.0.0.2 255.255.255.0
no ip redirects
ip nhrp authentication CISCO
ip nhrp map 100.0.0.5 150.50.5.5
ip nhrp map multicast 150.50.5.5
ip nhrp network-id 1245
ip nhrp nhs 100.0.0.5
tunnel source Loopback0
tunnel mode gre multipoint
tunnel key 1245
end
Rack1R2#
ps: I'm using dynamips ... I'm sure that doesn't help :P
[]s
rodrigo
This archive was generated by hypermail 2.1.4 : Fri Dec 01 2006 - 08:05:45 ART