From: Scott Morris (swm@emanon.com)
Date: Fri Sep 01 2006 - 22:59:38 ART
A few things to keep in mind:
1. OSPF won't be enabled on your serial interfaces since you are just
running "ppp" at that level (no ip address)
2. Your virtual-template is NOT an interface, so it will always show down.
3. Check on your virtual-ACCESS interfaces as these are what dynamically
gets created by the PPP process actually working.
4. Brian is right, make sure you have a "normal" peering relationship
working on the interface BEFORE attempting to build the virtual link. That
way if/when something doesn't work, your troubleshooting process is much
smaller!
Don't forget the basics there!
HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
#153, CISSP, et al.
CCSI/JNCI-M/JNCI-J
IPExpert VP - Curriculum Development
IPExpert Sr. Technical Instructor
smorris@ipexpert.com
http://www.ipexpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
beatccielab
Sent: Friday, September 01, 2006 1:28 PM
To: Brian Dennis
Cc: ccielab@groupstudy.com
Subject: Re: Virtual Link
Hi Brian,
This result Show ip ospf interface from R5 and R2
R5#sh ip osp int s0/0/0
%OSPF: OSPF not enabled on Serial0/0/0
R5#sh ip osp int virtua
R5#sh ip osp int virtual-te
R5#sh ip osp int virtual-template 1
Virtual-Template1 is down, line protocol is down
Internet Address 172.16.1.5/24, Area 10
Process ID 1, Router ID 1.1.1.1, Network Type POINT_TO_POINT, Cost: 1
Transmit Delay is 1 sec, State DOWN,
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
R5#
R2#show ip ospf interface virtual-template 1
Virtual-Template1 is down, line protocol is down
Internet Address 172.16.1.6/24, Area 10
Process ID 1, Router ID 2.2.2.2, Network Type POINT_TO_POINT, Cost: 1
Transmit Delay is 1 sec, State DOWN,
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
R2#show ip ospf interface s0/2/0
%OSPF: OSPF not enabled on Serial0/2/0
I was verify the connection before configure virtual link but all connection
from R5 and R2 can reach, but after i was configure virtual link, virtual
link still down..
Rgrds,
Felix
On 9/2/06, Brian Dennis <bdennis@internetworkexpert.com> wrote:
>
> You actually show a neighbor on R2 to R1 across the PPPoFR link but
> you don't have a network statement for the PPPoFR link on R2. Can you
> send a show ip ospf interface from R2?
>
> router ospf 1
> router-id 2.2.2.2
> area 10 virtual-link 1.1.1.1
> network 2.2.2.2 0.0.0.0 area 10
> network 192.1.24.2 0.0.0.0 area 24
> !
>
> R2#sh ip osp nei
>
> Neighbor ID Pri State Dead Time Address Interface
> 1.1.1.1 0 FULL/ - 00:00:30 172.16.1.5
> Virtual-Access1
> 3.3.3.3 1 FULL/DR 00:00:35 192.1.24.5
> FastEthernet0/0
>
> 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 Brian Dennis
> Sent: Friday, September 01, 2006 9:36 AM
> To: beatccielab; ccielab@groupstudy.com
> Subject: RE: Virtual Link
>
> On R6 you do not have OSPF enabled on the PPPoFR connection.
>
> router ospf 1
> router-id 2.2.2.2
> area 10 virtual-link 1.1.1.1
> network 2.2.2.2 0.0.0.0 area 10
> network 192.1.24.2 0.0.0.0 area 24
>
> You should always check to ensure that the OSPF neighbors have formed
> BEFORE configuring a virtual link.
>
> 1) Bring up the link
> 2) Ping across the link
> 3) Enable OSPF on the link
> 4) Verify the OSPF neighbors
> 5) Configure the OSPF virtual link
>
> 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 beatccielab
> Sent: Friday, September 01, 2006 8:25 AM
> To: ccielab@groupstudy.com
> Subject: Virtual Link
>
> Hi all,
>
> I have problem with my configuration OSPF virtual link over ppp over
> frame relay..
>
> Configuration Scenario like this :
>
> area 0 ---R5--- FRS/area10 --- R2--- area24 ---Cat1
>
> my case say: R2 not use subinterface..
>
> i already configure like this :
>
> R5:
> interface Serial0/1/0
> no ip address
> encapsulation frame-relay
> frame-relay interface-dlci 501 ppp Virtual-Template1 no frame-relay
> inverse-arp !
>
>
> interface Virtual-Template1
> ip address 172.16.1.5 255.255.255.0
>
> router ospf 1
> router-id 1.1.1.1
> area 10 virtual-link 2.2.2.2
> network 1.1.1.1 0.0.0.0 area 10
> network 172.16.1.5 0.0.0.0 area 10
>
> R5#sh ip os nei
>
> Neighbor ID Pri State Dead Time Address
> Interface
> 2.2.2.2 0 FULL/ - 00:00:38 172.16.1.6
> Virtual-Access1
>
> R5#sh ip os vi
> Virtual Link OSPF_VL0 to router 2.2.2.2 is down
> Run as demand circuit
> DoNotAge LSA allowed.
> Transit area 5, Cost of using 65535
> Transmit Delay is 1 sec, State DOWN,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
>
>
> R6:
> interface Serial0/1/0
> no ip address
> encapsulation frame-relay
> frame-relay interface-dlci 105 ppp Virtual-Template1 no frame-relay
> inverse-arp !
> interface Virtual-Template1
> ip address 172.16.1.6 255.255.255.0
> !
> interface FastEthernet0/0
> no ip address
> !
> interface FastEthernet0/0.24
> encapsulation dot1Q 24
> ip address 192.1.24.2 255.255.255.0
> !
> router ospf 1
> router-id 2.2.2.2
> area 10 virtual-link 1.1.1.1
> network 2.2.2.2 0.0.0.0 area 10
> network 192.1.24.2 0.0.0.0 area 24
> !
>
> R2#sh ip os vir
> Virtual Link OSPF_VL0 to router 1.1.1.1 is down
> Run as demand circuit
> DoNotAge LSA allowed.
> Transit area 5, Cost of using 65535
> Transmit Delay is 1 sec, State DOWN,
> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
>
> R2#sh ip osp nei
>
> Neighbor ID Pri State Dead Time Address
> Interface
> 1.1.1.1 0 FULL/ - 00:00:30 172.16.1.5
> Virtual-Access1
> 3.3.3.3 1 FULL/DR 00:00:35 192.1.24.5
> FastEthernet0/0.
>
>
> Cat1
>
> interface FastEthernet0/1
> switchport trunk encapsulation dot1q
> switchport trunk allowed vlan 24
> switchport mode trunk
>
> interface Loopback0
> ip address 3.3.3.3 255.255.255.0
>
> interface Vlan13
> ip address 192.1.24.5 255.255.255.0
>
> router ospf 1
> router-id 3.3.3.3
> log-adjacency-changes
> network 3.3.3.3 0.0.0.0 area 24
> network 198.1.24.5 0.0.0.0 area 24
>
>
> If issued show ip ospf virtual always down whereas if we issued sh ip
> ospf nei the router another site appears...
> Please advice me how to fix it this problem...
>
> Regards,
> beatccielab
>
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