From: Mushtaq A. Khan (mak.ccie2b@gmail.com)
Date: Thu Jan 26 2006 - 12:28:41 GMT-3
I also had somewhat similar issue with virtual link but in my case virtual
link was keep showing down. In my case, I'm was using PPP over Frame-Relay.
I tried all the possible options but couldn't get it resolved. However, when
I changed my configuration to simple Frame Relay, the virtual link came up.
Can anyone give me some good tips to resolve this. The IOS version I used is
12.3(14)T4.
Here are my configs for reference:
R1#
interface Serial0/1
no ip address
encapsulation frame-relay
frame-relay interface-dlci 102 ppp Virtual-Template1
!
interface Virtual-Template1
ip address 135.1.12.1 255.255.255.0
!
!
router ospf 1
router-id 135.1.1.1
log-adjacency-changes
area 12 virtual-link 135.1.2.2
network 135.1.1.1 0.0.0.0 area 12
network 135.1.12.0 0.0.0.255 area 12
network 135.1.145.0 0.0.0.255 area 0
R2#
interface Serial0/1
no ip address
encapsulation frame-relay
frame-relay interface-dlci 201 ppp Virtual-Template1
!
interface Virtual-Template1
ip address 135.1.12.2 255.255.255.0
!
router ospf 1
router-id 135.1.2.2
log-adjacency-changes
area 12 virtual-link 135.1.1.1
network 135.1.2.2 0.0.0.0 area 12
network 135.1.12.0 0.0.0.255 area 12
network 135.1.22.0 0.0.0.255 area 2
!
Thanks,
Mushtaq
On 1/26/06, Jonathan Stevens <jonathanstevens.net@googlemail.com> wrote:
>
> I've noticed that this seems to vary across platform/IOS
>
>
> Scott Smith wrote:
>
> >It should...
> >
> >Rack1R1#sh ip ospf nei
> >Neighbor ID Pri State Dead Time Address
> Interface
> >150.1.4.4 0 FULL/ - 00:00:28 155.1.146.4
> OSPF_VL0
> >150.1.4.4 1 FULL/DR 00:00:33 155.1.146.4
> Ethernet0/0
> >
> >Rack1R1#sh ip ospf int
> >OSPF_VL0 is up, line protocol is up
> > Internet Address 0.0.0.0/0, Area 0
> > Process ID 1, Router ID 150.1.1.1, Network Type VIRTUAL_LINK, Cost: 10
> > Configured as demand circuit.
> > Run as demand circuit.
> > DoNotAge LSA allowed.
> > Transmit Delay is 1 sec, State POINT_TO_POINT,
> > Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> > oob-resync timeout 40
> > Hello due in 00:00:07
> > Index 2/3, flood queue length 0
> > Next 0x0(0)/0x0(0)
> > Last flood scan length is 1, maximum is 1
> > Last flood scan time is 0 msec, maximum is 0 msec
> > Neighbor Count is 1, Adjacent neighbor count is 1
> > Adjacent with neighbor 150.1.4.4 (Hello suppressed)
> > Suppress hello for 1 neighbor(s)
> >
> >IOS Version 12.2(15)T14.
> >
> >I believe in previous versions IOS did not show this.
> >
> >-Scott
> >
> >On 1/14/06, Victor Cappuccio <cvictor@protokolgroup.com> wrote:
> >
> >
> >>Why, If OSPF Virtual Links are considered to be an Interface in Area 0,
> they
> >>do not appear in the show ip ospf neighbor and they do not appear also
> in
> >>the show ip ospf interface??
> >>
> >>
> >>
> >>Rack1R4#show ip ospf neighbor
> >>Neighbor ID Pri State Dead Time
> Address Interface
> >>1.1.1.1 1 FULL/ - 00:00:32 136.1.41.1
> Serial0.41
> >>3.3.3.3 1 FULL/ - 00:01:51 136.1.234.3
> Serial0.234
> >>2.2.2.2 1 FULL/ - 00:01:54 136.1.234.2
> Serial0.234
> >>3.3.3.3 1 FULL/ - 00:00:34 136.1.43.3 Serial1
> >>
> >>
> >>Rack1R4#show ip ospf interface | in is up
> >>Serial0.41 is up, line protocol is up
> >>Loopback0 is up, line protocol is up
> >>Serial0.234 is up, line protocol is up
> >>Serial1 is up, line protocol is up
> >>
> >>
> >>Rack1R4#show ip ospf virtual-links
> >>Virtual Link OSPF_VL0 to router 3.3.3.3 is up
> >> Run as demand circuit
> >> DoNotAge LSA allowed.
> >> Transit area 34, via interface Serial1, Cost of using 64
> >> Transmit Delay is 1 sec, State POINT_TO_POINT,
> >> Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
> >> Hello due in 00:00:04
> >> Adjacency State FULL (Hello suppressed)
> >> Index 4/5, retransmission queue length 0, number of retransmission 0
> >> First 0x0(0)/0x0(0) Next 0x0(0)/0x0(0)
> >> Last retransmission scan length is 0, maximum is 0
> >> Last retransmission scan time is 0 msec, maximum is 0 msec
> >> Message digest authentication enabled
> >> Youngest key id is 1
> >>Rack1R4#
> >>
> >>Thanks
> >>Victor.
> >>
> >>_______________________________________________________________________
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> >>
> >>
> >
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