From: Scott Morris (swm@emanon.com)
Date: Sat Sep 02 2006 - 14:41:36 ART
As the spec says, they shouldn't! Summaries have to come through Abr's and
through area 0. Without an area 0, that can't happen! Ah well, the journey
is all the fun anyway, right? :)
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: sabrina pittarel [mailto:sabri_esame@yahoo.com]
Sent: Saturday, September 02, 2006 1:03 PM
To: swm@emanon.com
Cc: ccielab@groupstudy.com
Subject: Re: Virtual Link
Thanks Scott.
I'm aware of that is not the expected or correct behavior, but that is how
my routers were behaving.
I realized later that any other interface I was adding in Area0 was making
the virtual link to go up, even another loopback.
I started toggling the network statement of the original loopback to see it
that make any difference, nothing. Finally I added and removed the loopback
itself and *magic* the virtual link went up even with only that interface in
Area0.
I was hitting a bug. Yesterday evening I tried over and over to see if I
could find a sequence of operations that was deterministically leading into
the issue, but I wasn't lucky.
Anyway I guess I discovered something useful for others in future. Not sure
I could help beatccielab though, it seems that in his case the VL doesn't
really want to go up.
BTW, even my routers do not cooperate if I don't have an interface in area
0.
Sabrina
----- Original Message ----
From: Scott Morris <swm@emanon.com>
To: sabrina pittarel <sabri_esame@yahoo.com>; beatccielab
<beatccielab@gmail.com>
Cc: ccielab@groupstudy.com
Sent: Saturday, September 2, 2006 7:33:35 AM
Subject: RE: Virtual Link
That shouldn't make a difference, loopbacks work fine (see previous posts
regarding this with tests/debugs).
Brian Dennis seems to have made it work without any actual interfaces
existing in Area 0, but I couldn't get any of my routers to cooperate in
that fashion. Mine apparantly pay attention to the RFC. :)
Scott
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
sabrina pittarel
Sent: Friday, September 01, 2006 11:48 PM
To: beatccielab; swm@emanon.com
Cc: ccielab@groupstudy.com
Subject: Re: Virtual Link
Sorry,
just checked your configs. You *are* using a loopback to simulate Area0 Try
using a physical port.
Sabrina
----- Original Message ----
From: sabrina pittarel <sabri_esame@yahoo.com>
To: beatccielab <beatccielab@gmail.com>; swm@emanon.com
Cc: ccielab@groupstudy.com
Sent: Friday, September 1, 2006 8:46:01 PM
Subject: Re: Virtual Link
Are you using a loopback interface on R5 to represent area 0?
I've just lab it out and I saw your same behavior (even the area 0
inactive) until I haven't used a real link for my area 0.
Sabrina
----- Original Message ----
From: beatccielab <beatccielab@gmail.com>
To: swm@emanon.com
Cc: ccielab@groupstudy.com
Sent: Friday, September 1, 2006 8:16:21 PM
Subject: Re: Virtual Link
Dear All,
There is my configuration before issued virtual-link command...
interface loopback 0
ip address 1.1.1.1 255.255.255.0
interface Serial0/1/0
no ip address
encapsulation frame-relay
frame-relay interface-dlci 501 ppp Virtual-Template1 no frame-relay
inverse-arp frame-relay lmi-type cisco !
interface Virtual-Template1
ip address 172.16.1.5 255.255.255.0
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
network 1.1.1.1 0.0.0.0 area 0
network 172.16.1.5 0.0.0.0 area 10
R5#sh ip os nei
2.2.2.2 0 FULL/ - 00:00:39 172.16.1.6
Virtual-Access1
R5#
R5#sh ip int br
Interface IP-Address OK? Method Status
Protocol
Serial0/1/0 unassigned YES NVRAM up
up
Virtual-Access1 172.16.1.5 YES TFTP up
up
Virtual-Template1 172.16.1.5 YES NVRAM down
down
Virtual-Access2 unassigned YES unset down
down
Loopback0 1.1.1.1 YES NVRAM up
up
R5#
R5#ping 172.16.1.6
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.6, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/57/60 ms R5#
R5#ping 192.1.24.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.1.24.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R5#ping 2.2.2.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/57/60 ms
R6
interface loopback 0
ip address 2.2.2.2 255.255.255.0
!
interface Serial0/2/0
no ip address
encapsulation frame-relay
frame-relay interface-dlci 105 ppp Virtual-Template1 no frame-relay
inverse-arp frame-relay lmi-type cisco !
interface Virtual-Template1
ip address 172.16.1.6 255.255.255.0
!
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
network 2.2.2.2 0.0.0.0 area 10
network 172.16.1.6 0.0.0.0 area 10
network 192.1.24.2 0.0.0.0 area 24
R6#sh ip int br
Interface IP-Address OK? Method Status
Protocol
FastEthernet0/0 unassigned YES NVRAM up
up
FastEthernet0/0.13 192.1.24.2 YES NVRAM up
up
Serial0/0/0 unassigned YES NVRAM administratively down
down
Serial0/0/1 unassigned YES NVRAM administratively down
down
Serial0/2/0 unassigned YES NVRAM up
up
Virtual-Access1 172.16.1.6 YES TFTP up
up
Virtual-Template1 172.16.1.6 YES NVRAM down
down
Virtual-Access2 unassigned YES unset down
down
Loopback0 2.2.2.2 YES NVRAM up
up
R6#
R6#sh ip osp nei
Neighbor ID Pri State Dead Time Address Interface
1.1.1.1 0 FULL/ - 00:00:31 172.16.1.5
Virtual-Access1
3.3.3.3 1 FULL/BDR 00:00:36 192.1.24.3
FastEthernet0/0.13
R6#ping 172.16.1.5
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.5, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/60/68 ms
R6#ping 1.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 56/56/60 ms R6#
the connectivity has been done.. but if i issued virtual link command, Area
0 bacbbone is inactive at R6. and virtual link still down..
On 9/2/06, Scott Morris <swm@emanon.com> wrote:
>
> 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
> >
> > ____________________________________________________________________
> > __ _ Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
> >
> > ____________________________________________________________________
> > __ _ Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
> ______________________________________________________________________
> _ Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
-- Regards, beatccielab
This archive was generated by hypermail 2.1.4 : Sun Oct 01 2006 - 16:55:39 ART