From: Anthony Pace (anthonypace@xxxxxxxxxxx)
Date: Sun Jun 16 2002 - 21:35:50 GMT-3
Can you redistribute connected into OSPF and use a summary address of
whatever the IGRP FLSM networks are?
Otherwise a secondary address on the loopback (same major network but
with FLSM mask)
Anthony Pace
On Sun, 16 Jun 2002 18:24:42 -0500, "Minh Vuong" <mvuong@cisco.com>
said:
> Hi Guys,
>
> Need some help with this classic OSPF to IGRP problem. I am trying to
> get a
> VLSM route from OSPF over to IGRP.
>
> I was trying to use the second OSPF area method. I can't seem to get
> this
> to work right.
>
>
> The route is 133.10.5.1/27, which is a loopback address on R1. R1
> participates in OSPF Area 0 only.
>
> IGRP domain uses only /24 subnets.
>
> Usual caveats of can't use ip default networks or redistribute static
> applies.
>
>
>
>
> R2----IGRP-------R1------OSPF------R4
>
>
>
>
> R1:
> router ospf 1
> redistribute igrp 1 metric 200 subnets
> network 128.200.1.0 0.0.0.255 area 0
> network 133.10.1.0 0.0.0.31 area 0
> network 133.10.2.0 0.0.0.255 area 0
> network 133.10.5.0 0.0.0.31 area 0
> neighbor 133.10.1.4
> neighbor 133.10.1.3
> distance 55
> !
> router ospf 2
> redistribute ospf 1 metric 200 subnets
> network 128.200.1.0 0.0.0.255 area 0
> network 133.10.1.0 0.0.0.31 area 0
> network 133.10.2.0 0.0.0.255 area 0
> network 133.10.5.0 0.0.0.31 area 0
> distance 55
> !
> router igrp 1
> redistribute connected metric 1000 1 255 1 1500 route-map c2i
> redistribute static metric 1000 1 255 1 1500
> redistribute ospf 2 metric 1000 100 255 1 1500
> network 133.10.0.0
> !
>
>
>
> R4:
> router ospf 1
> router-id 133.10.1.4
> area 30 range 133.10.33.0 255.255.255.0
> area 30 virtual-link 133.10.33.5
> redistribute eigrp 1 metric 200 subnets route-map e2o
> network 133.10.1.0 0.0.0.31 area 0
> network 133.10.30.0 0.0.0.15 area 0
> network 133.10.33.0 0.0.0.63 area 30
> network 161.100.1.0 0.0.0.255 area 30
> !
> router ospf 2
> network 133.10.1.0 0.0.0.63 area 0
> network 133.10.30.0 0.0.0.15 area 0
> network 133.10.33.0 0.0.0.63 area 30
> network 161.100.1.0 0.0.0.255 area 30
> !
>
>
>
>
> R2:
> router igrp 1
> redistribute connected
> passive-interface Ethernet0
> network 133.10.0.0
>
>
>
>
>
> On R1, my second OSPF process doesn't seem to be active:
> R1#sh ip ospf 2
> Routing Process "ospf 2" with ID 133.10.5.1
> Supports only single TOS(TOS0) routes
> Supports opaque LSA
> It is an autonomous system boundary router
> Redistributing External Routes from,
> ospf 1 with metric mapped to 200, includes subnets in
> redistribution
> SPF schedule delay 5 secs, Hold time between two SPFs 10 secs
> Minimum LSA interval 5 secs. Minimum LSA arrival 1 secs
> Number of external LSA 13. Checksum Sum 0x742E1
> Number of opaque AS LSA 0. Checksum Sum 0x0
> Number of DCbitless external and opaque AS LSA 0
> Number of DoNotAge external and opaque AS LSA 0
> Number of areas in this router is 1. 1 normal 0 stub 0 nssa
> External flood list length 0
> Area BACKBONE(0) (Inactive)
> <<<======================================
> INACTIVE BACKBONE 0???
> Number of interfaces in this area is 0
> Area has no authentication
> SPF algorithm executed 4 times
> Area ranges are
> Number of LSA 1. Checksum Sum 0xF022
> Number of opaque link LSA 0. Checksum Sum 0x0
> Number of DCbitless LSA 0
> Number of indication LSA 0
> Number of DoNotAge LSA 0
> Flood list length 0
>
>
>
>
>
> R1 is running 12.1(2)T (c2600-jk2o3s-mz.121-2.T.bin).
>
> Thanks,
>
> Minh
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