From: Peter Van Oene (pvo@xxxxxxxxxxxx)
Date: Mon Apr 02 2001 - 14:23:08 GMT-3
I think feature rich might be a more accurate term than robust in this case. I
think that IS-IS is equally feature rich with the exception of OSPF's superior
support of multipoint configurations. All L1 areas are only totally stubby wh
en L2 information isn't leaked into them as is possible in current implementati
ons.
In all comes down to figuring out what you need the protocol to do and both hav
e their strengths and weaknesses in certain implementations.
Pete
*********** REPLY SEPARATOR ***********
On 4/2/2001 at 12:56 PM Steven Weber wrote:
>someon eplease correct me if I'm wrong but I don't believe that IS-IS is
>as
>robust in the same ways that OSPF is. In IS-IS everything is centered in
>the
>L2 core. All L1 areas are compared to totally stubby OSPF areas so any
>redistribution that you want to do should be done in the core.
>HTH
>Steve
>----- Original Message -----
>From: "tom cheung" <tkc9789@hotmail.com>
>To: <ccielab@groupstudy.com>
>Sent: Monday, April 02, 2001 12:25 PM
>Subject: IS-IS summary route
>
>
>> Hi All,
>> I'm stumped with an IS-IS route summarization problem and needed some
>help.
>> Here's the physical connectivity:
>>
>> area1 isis area2 rip
>> ----------r3------------r4------------r5--
>> isis vlsm e0 s1
>>
>> I want to summarize the different isis area 1 subnets and inject them
>into
>> RIP. I've tried using "summary-address a.b.c.d w.x.y.z" under router
>isis
>> in R4. But the summary route does not show up in r4's route table and no
>> routes are injected into RIP's domain when I try to redistribute between
>the
>> two routing protocols. What seems to be the problem??
>>
>> Config for R4:
>> router isis
>> summary-address 152.1.1.0 255.255.255.0 level-1-2
>> redistribute rip metric 1 metric-type internal level-2
>> net 00.0002.0000.0000.0040.00
>> !
>> router rip
>> redistribute isis level-1-2 metric 2
>> passive-interface BRI0
>> passive-interface Ethernet0
>> network 152.1.0.0
>> default-metric 2
>>
>> Route table:
>> r4# sh ip 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
>>
>> 152.1.0.0/16 is variably subnetted, 8 subnets, 5 masks
>> i L2 152.1.1.128/25 [115/30] via 152.1.1.65, Ethernet0
>> i L2 152.1.1.8/30 [115/20] via 152.1.1.65, Ethernet0
>> i L2 152.1.1.1/32 [115/20] via 152.1.1.65, Ethernet0
>> i L2 152.1.1.2/32 [115/30] via 152.1.1.65, Ethernet0
>> C 152.1.2.0/24 is directly connected, Serial1
>> i L2 152.1.1.4/30 [115/20] via 152.1.1.65, Ethernet0
>> R 152.1.4.0/24 [120/1] via 152.1.2.2, 00:00:04, Serial1
>> C 152.1.1.64/26 is directly connected, Ethernet0
>> r4#
>>
>>
>>
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