OSPF NBMA -without neighbors-

From: Jason Cash (cash2001@swbell.net)
Date: Tue Apr 01 2003 - 20:51:00 GMT-3


Well, my other post never went thru, so here goes again:
 
I have three routers connected via FR interfaces (main intf). The OSPF
mode is non-broadcast, I have no neighbors defined, but adjacencies are
forming:
 
 
                  R3 (s1)
                       / \
                      / \
            R2 (s0) / \R5 (s1)
 
r3#sh ip ospf int s1
Serial1 is up, line protocol is up
  Internet Address 140.4.1.3/28, Area 1
  Process ID 1, Router ID 140.4.30.1, Network Type NON_BROADCAST, Cost:
323
  Transmit Delay is 1 sec, State DR, Priority 100
  Designated Router (ID) 140.4.30.1, Interface address 140.4.1.3
  Backup Designated router (ID) 140.4.20.1, Interface address 140.4.1.2
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
    Hello due in 00:00:00
  Index 1/2, flood queue length 0
  Next 0x0(0)/0x0(0)
  Last flood scan length is 0, maximum is 7
  Last flood scan time is 0 msec, maximum is 12 msec
  Neighbor Count is 2, Adjacent neighbor count is 2
    Adjacent with neighbor 140.4.5.1
    Adjacent with neighbor 140.4.20.1 (Backup Designated Router)
  Suppress hello for 0 neighbor(s)
  Message digest authentication enabled
    Youngest key id is 1
 
r3#sh ip ospf nei
 
   Neighbor ID Pri State Dead Time Address
Interface
   140.4.6.1 1 FULL/BDR 00:00:38 140.4.4.6
Ethernet0
   140.4.4.13 1 FULL/DROTHER 00:00:33 140.4.4.13
Ethernet0
R5 140.4.5.1 1 FULL/DROTHER 00:00:31 140.4.1.5 Serial1
R2 140.4.20.1 1 FULL/BDR 00:00:38 140.4.1.2 Serial1
 
r3#sh run
hostname r3
!
 
interface Loopback1
 description Token Ring0
 ip address 140.4.30.1 255.255.255.128
 ip ospf network point-to-point
!
interface Serial1
 ip address 140.4.1.3 255.255.255.240
 encapsulation frame-relay
 ip ospf authentication message-digest
 ip ospf message-digest-key 1 md5 cisco
 ip ospf hello-interval 10
 ip ospf priority 100
 frame-relay map ip 140.4.1.2 302 broadcast
 frame-relay map ip 140.4.1.5 305 broadcast
 no frame-relay inverse-arp
!
router ospf 1
 log-adjacency-changes
 auto-cost reference-bandwidth 500
 area 0 authentication message-digest
 area 1 virtual-link 140.4.20.1
 area 1 virtual-link 140.4.5.1
 network 140.4.1.0 0.0.0.15 area 1
 network 140.4.3.0 0.0.0.255 area 1
 network 140.4.4.0 0.0.0.127 area 0
 network 140.4.30.0 0.0.0.127 area 30
 
There are no neighbor statements. Does the 'broadcast' statement at the
end of the 'fr map' make the medium a broadcast and thus change the
network type? Does this negate the need for static neighbors?



This archive was generated by hypermail 2.1.4 : Thu May 01 2003 - 13:35:45 GMT-3