From: Vladimir Sousa (vladrac@gmail.com)
Date: Sun Dec 02 2007 - 19:34:36 ART
Did anyone get this working?
I still get:
Adv Router is not-reachable
For one of the spokes on the HUB, show ip ospf data router
Vlad
On 11/29/07, Fernando Carvalho <fernando.cagica@t-online.de> wrote:
>
> Hi,
>
> Have you tried with 2 interfaces Virtualtemplate with the same ip
> address on R4? So that R4 clones from different templates, building 2
> p2p interfaces with the same ip address.
>
> -----Urspr|ngliche Nachricht-----
> Von: nobody@groupstudy.com [mailto:nobody@groupstudy.com] Im Auftrag von
> iosluver@gmail.com
> Gesendet: Mittwoch, 28. November 2007 16:22
> An: ccielab@groupstudy.com
> Betreff: OSPF Issue
>
>
> Hi GS,
>
> I wanted to get some opinions on a task I came across which behaved in a
> manner I didn't expect. Here are the details:
>
> R3 -----Frame-Relay------- R4 -----Frame-Relay-------R5
>
>
> Instructions:-
> **********************
> Use R4 as Hub.
> Use only physical interfaces on R4 & R3
> Use a sub-interface on R5
> Do not use FRAME-RELAY MAP command on R5
> Do not use any DYNAMIC layer 3 to 2 mappings on these connections DO not
> send redundant broadcast traffic to the spokes Configure OSPF Area 0 on
> the segment between R3,R4 & R5 Do not use IP OSPF NETWORK command.
>
> Here is what I did:-
>
> R3
> ****
> interface Serial1/1
> encapsulation frame-relay
> frame-relay interface-dlci 314 ppp Virtual-Template1
>
> interface Virtual-Template1
> ip address 142.1.0.3 255.255.255.0
> ip ospf hello-interval 3
> !
> router ospf 1
> router-id 150.1.3.3
> log-adjacency-changes
> network 142.1.0.3 0.0.0.0 area 0
> network 150.1.3.3 0.0.0.0 area 0
> !
>
> R4
> ***
> interface Serial1/0
> no ip address
> encapsulation frame-relay
> frame-relay interface-dlci 405 ppp Virtual-Template1 frame-relay
> interface-dlci 413 ppp Virtual-Template1
>
> interface Virtual-Template1
> ip address 142.1.0.4 255.255.255.0
> ip ospf network point-to-multipoint
> ip ospf hello-interval 3
> !
> router ospf 1
> router-id 150.1.4.4
> log-adjacency-changes
> network 142.1.0.4 0.0.0.0 area 0
> network 150.1.4.4 0.0.0.0 area 0
>
> R5
> ***
> interface Serial1/0.504 multipoint
> frame-relay interface-dlci 504 ppp Virtual-Template1
>
> !
> interface Virtual-Template1
> ip address 142.1.0.5 255.255.255.0
> ip ospf hello-interval 3
> !
> router ospf 1
> router-id 150.1.5.5
> log-adjacency-changes
> network 142.1.0.5 0.0.0.0 area 0
> network 150.1.5.5 0.0.0.0 area 0
>
> The solution did not change the network type on R4 as its a violation of
> the one of instructions. Without that command, R4 does not ANY certain
> routes learnt from R3 to its routing table. It does however forward the
> LSAs to R3 which installs them as valid routes which can't be reached
> via R4. For obvious reasons I reduced the hello time. Some
> output(connected routes) were removed for brevity. All suggestions are
> welcome. I can send more debugs, log messages if required. Let me know
> what you think.
>
> R3 Routing Table
> ****************
> O 150.1.5.5/32 [110/3] via 142.1.0.4, 00:02:09, Virtual-Access2
> O 150.1.4.4/32 [110/2] via 142.1.0.4, 00:02:11, Virtual-Access2
>
> R4 Routing Table
> ****************
> Rack1R4#sh ip route
> C 150.1.4.0/24 is directly connected, Loopback0
> O 150.1.5.5/32 [110/2] via 142.1.0.5, 00:02:41, Virtual-Access3
>
>
> R5 Routing Table
> *****************
> 150.1.0.0/16 is variably subnetted, 3 subnets, 2 masks
> O 150.1.4.4/32 [110/2] via 142.1.0.4, 00:05:34, Virtual-Access2
> O IA 150.1.3.3/32 [110/3] via 142.1.0.4, 00:05:34, Virtual-Access2
>
> OSPF DATABASE - R4 - Without point-to-multipoint
> ************************************************
> Adv Router is not-reachable
> LS age: 491
> Options: (No TOS-capability, DC)
> LS Type: Router Links
> Link State ID: 150.1.3.3
> Advertising Router: 150.1.3.3
> LS Seq Number: 80000009
> Checksum: 0x63B9
> Length: 48
> Area Border Router
> Number of Links: 2
>
> OSPF DATABASE - R4 - with point-to-multipoint
> *********************************************
>
> Routing Bit Set on this LSA
> LS age: 264
> Options: (No TOS-capability, DC)
> LS Type: Router Links
> Link State ID: 150.1.3.3
> Advertising Router: 150.1.3.3
> LS Seq Number: 80000009
> Checksum: 0x63B9
> Length: 48
> Area Border Router
> Number of Links: 2
>
>
>
> Many Thanks in advance
>
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