RE: ospf and NBMA

From: Sreeram P Bandakavi (sbandaka@xxxxxxxxx)
Date: Wed Aug 23 2000 - 15:55:19 GMT-3


   
You might want to add "ip ospf network point-to-multi" thro'out your frame
relay cloud so that they can form the adj

for ex there is no ip ospf network command in the following config.

interface Serial0.1 multipoint
 ip address 10.10.1.1 255.255.0.0
 frame-relay map ip 10.10.1.3 103 broadcast
 frame-relay map ip 10.10.1.5 105 broadcast

Sreeram

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Harbir Kohli
Sent: Wednesday, August 23, 2000 10:02 AM
To: 'Ccielab
Subject: ospf and NBMA

Hello Group,

I think in my config I have run into some issue with NBMA and OSPF
because I can not exchange any routes even though I have full adjacency
established.

What is wrong?
************R1************
interface Ethernet0
 ip address 10.1.1.1 255.255.0.0
!
interface Serial0
 no ip address
 encapsulation frame-relay IETF
 frame-relay lmi-type ansi
!
interface Serial0.1 multipoint
 ip address 10.10.1.1 255.255.0.0
 frame-relay map ip 10.10.1.3 103 broadcast
 frame-relay map ip 10.10.1.5 105 broadcast
!
interface Serial0.2 point-to-point
 ip address 10.20.1.1 255.255.0.0
 ip ospf priority 200
 frame-relay interface-dlci 102
!
interface Serial1
 no ip address
 shutdown
!
router eigrp 1
 passive-interface Ethernet0
 passive-interface Serial0.2
 network 10.0.0.0
!
router ospf 1
 network 10.10.1.1 0.0.0.0 area 0
 network 10.1.1.1 0.0.0.0 area 1
!
ip classless
logging buffered 16384 debugging
no logging console
!
alias exec ro show ip route
alias exec ne show ip ospf neighbor
alias exec ip show ip int brief
!
line con 0
 exec-timeout 0 0
line aux 0
line vty 0 4
 login
!
end
*****************************
RT1#ne

Neighbor ID Pri State Dead Time Address
Interface
11.1.1.5 0 FULL/DROTHER 00:01:43 10.10.1.5
Serial0.1
10.33.2.1 0 FULL/DROTHER 00:01:43 10.10.1.3
Serial0.1
RT1#ro
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP

       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate
default
       U - per-user static route, o - ODR

Gateway of last resort is not set

     10.0.0.0/16 is subnetted, 3 subnets
C 10.10.0.0 is directly connected, Serial0.1
C 10.1.0.0 is directly connected, Ethernet0
C 10.20.0.0 is directly connected, Serial0.2
**********************
sh ip ospf database router

...
Adv Router is not-reachable
  LS age: 815
  Options: (No TOS-capability, DC)
  LS Type: Router Links
  Link State ID: 10.33.2.1
  Advertising Router: 10.33.2.1
  LS Seq Number: 80000006
  Checksum: 0xD23
  Length: 48
  Area Border Router
  AS Boundary Router
   Number of Links: 2

***********************
RT3#sh run
Building configuration...

Current configuration:
!
version 11.2
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
no service password-encryption
no service udp-small-servers
no service tcp-small-servers
!
hostname RT3
!
!
ip subnet-zero
no ip domain-lookup
!
interface Loopback0
 ip address 10.33.1.1 255.255.255.0
!
interface Loopback1
 ip address 10.33.2.1 255.255.255.0
!
interface Ethernet0
 no ip address
 shutdown
!
interface Serial0
 no ip address
 encapsulation frame-relay IETF
 frame-relay lmi-type ansi
!
interface Serial0.1 point-to-point
 ip address 10.10.1.3 255.255.0.0
 ip ospf network point-to-multipoint
 ip ospf priority 0
 frame-relay interface-dlci 301
!
interface Serial1
 ip address 173.168.40.1 255.255.255.0
!
interface TokenRing0
 ip address 10.3.3.1 255.255.0.0
 ring-speed 16
!
router ospf 1
 redistribute static metric 500 metric-type 1
 network 10.10.1.3 0.0.0.0 area 0
 network 10.33.0.0 0.0.255.255 area 33
 area 33 range 10.33.0.0 255.255.0.0
!
ip classless
ip route 0.0.0.0 0.0.0.0 173.168.40.2
logging buffered 16384 debugging
no logging console
!
alias exec ro show ip route
alias exec ne show ip ospf neighbor
alias exec ip show ip int brief
!
line con 0
 exec-timeout 0 0
line aux 0
line vty 0 4
 login
!
end

********************
RT3#ne

Neighbor ID Pri State Dead Time Address
Interface
10.20.1.1 1 FULL/ - 00:01:58 10.10.1.1
Serial0.1
RT3#ro
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP

       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate
default
       U - per-user static route, o - ODR

Gateway of last resort is 173.168.40.2 to network 0.0.0.0

     173.168.0.0/24 is subnetted, 1 subnets
C 173.168.40.0 is directly connected, Serial1
     10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C 10.10.0.0/16 is directly connected, Serial0.1
C 10.3.0.0/16 is directly connected, TokenRing0
C 10.33.2.0/24 is directly connected, Loopback1
C 10.33.1.0/24 is directly connected, Loopback0
S* 0.0.0.0/0 [1/0] via 173.168.40.2



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