From: Zamfir, Mihail (MZ200002@xxxxxxxxxxxxxxxxxxxxxxxxxx)
Date: Wed Jun 12 2002 - 01:10:24 GMT-3
You will have to configure ip ospf network point-to-point under the loopback
interfaces.
-----Original Message-----
From: gary braver [mailto:gbraver@attbi.com]
Sent: Wednesday, 12 June 2002 1:46 PM
To: Ccielab (E-mail)
Subject: Host specific OSPF routes in table with /24 advertisement
Stumped (and hopefully not a stupid question)
A quick scan of the R1 config will show all interfaces defined and
advertised with /24 bit mask. Yet the show IP route on
R2 - has some ospf entries with 32 bit masks
Why?
Partial Config on router R1 as follows:
interface Loopback0
ip address 135.5.2.2 255.255.255.0
!
interface Serial0.1 multipoint
ip address 135.5.34.2 255.255.255.0
ip ospf network point-to-multipoint
frame-relay map ip 135.5.34.3 103 broadcast
frame-relay map ip 135.5.34.4 106 broadcast
!
interface Serial0.2 point-to-point
ip address 135.5.42.2 255.255.255.0
frame-relay interface-dlci 101
!
interface TokenRing0
ip address 135.5.100.2 255.255.255.0
ring-speed 16
!
router ospf 1
log-adjacency-changes
network 135.5.2.0 0.0.0.255 area 0
network 135.5.34.0 0.0.0.255 area 0
network 135.5.42.0 0.0.0.255 area 0
network 135.5.100.0 0.0.0.255 area 0
R2 routing table
Gateway of last resort is not set
135.5.0.0/16 is variably subnetted, 5 subnets, 2 masks
O 135.5.2.2/32 [110/7] via 135.5.100.2, 00:20:31, TokenRing0
C 135.5.8.0/24 is directly connected, Loopback0
O 135.5.34.2/32 [110/6] via 135.5.100.2, 00:20:31, TokenRing0
C 135.5.44.0/24 is directly connected, Ethernet0
C 135.5.100.0/24 is directly connected, TokenRing0
why are the ospf routes no to the /24 network?
r2 Routing statements
all interfaces /24 mask
router ospf 1
network 135.5.100.0 0.0.0.255 area 0
!
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