From: BUI, TIN T (SBCSI) (tb4565@xxxxxxx)
Date: Fri Feb 16 2001 - 20:12:15 GMT-3
Matt, with frame-relay, if you use ip ospf network-type point-to-multipoint,
the router will create a host for the frame interface. The reason it does
this is so it can simulate a fully mesh system in Frame-relay.
To stop it from advertising as host /32, you can do one of the following:
* on interface command, do ip ospf network point-to-point. This will force
it to send the mask of the interface.
* use area-range to summarize the hosts to 24 bit.
> Tin T. Bui
> Senior Network Manager
> CCNP, CNE, MCP
> Network Management Center
> SBC Services Inc.
> 7337 Trade Street, Rm 1110
> San Diego, Ca 92121
> Office #: 858-886-4644/858-886-4589
> Pager #: 858-494-0482
> Fax #: 858-549-4103
> Email: tb4565@sbc.com
>
-----Original Message-----
From: Bolcer, Matt [mailto:matt.bolcer@eds.com]
Sent: Friday, February 16, 2001 12:25 PM
To: ccielab@groupstudy.com
Subject: ospf host routes showing up
Why are host routes showing up for the frame-relay connected neighbors, and
being passed as a host (/32) route to the next-hop eigrp (R1) route table?
interface Serial0
ip address 1.1.1.1 255.255.255.0
no fair-queue
clockrate 125000
!
interface Serial1
no ip address
encapsulation frame-relay
frame-relay lmi-type ansi
!
interface Serial1.1 multipoint
ip address 137.144.1.100 255.255.255.248
ip ospf network point-to-multipoint
frame-relay interface-dlci 401
frame-relay interface-dlci 403
!
interface Serial1.2 multipoint
ip address 137.144.1.67 255.255.255.248
ip ospf network broadcast
frame-relay interface-dlci 402
!
router eigrp 100
redistribute ospf 100 metric 1500 100 255 1 1500
network 1.0.0.0
!
router ospf 100
network 137.144.1.100 0.0.0.0 area 0
network 137.144.1.67 0.0.0.0 area 0
!
router bgp 65010
neighbor 1.1.1.2 remote-as 64710
no auto-summary
!
ip classless
logging buffered
!
r4#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
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
Gateway of last resort is not set
1.0.0.0/24 is subnetted, 1 subnets
C 1.1.1.0 is directly connected, Serial0
11.0.0.0/16 is subnetted, 1 subnets
O IA 11.11.0.0 [110/65] via 137.144.1.66, 00:14:51, Serial1.2
137.144.0.0/16 is variably subnetted, 5 subnets, 2 masks
O IA 137.144.1.33/32 [110/65] via 137.144.1.97, 00:14:51, Serial1.1
C 137.144.1.64/29 is directly connected, Serial1.2
C 137.144.1.96/29 is directly connected, Serial1.1
O 137.144.1.97/32 [110/64] via 137.144.1.97, 00:14:52, Serial1.1
O 137.144.1.98/32 [110/64] via 137.144.1.98, 00:14:52, Serial1.1
r4#
r1#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
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
Gateway of last resort is not set
1.0.0.0/24 is subnetted, 1 subnets
C 1.1.1.0 is directly connected, Serial0
11.0.0.0/16 is subnetted, 1 subnets
D EX 11.11.0.0 [170/2244096] via 1.1.1.1, 00:19:46, Serial0
137.144.0.0/32 is subnetted, 3 subnets
D EX 137.144.1.33 [170/2244096] via 1.1.1.1, 00:19:46, Serial0
D EX 137.144.1.97 [170/2244096] via 1.1.1.1, 00:19:46, Serial0
D EX 137.144.1.98 [170/2244096] via 1.1.1.1, 00:19:46, Serial0
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