RE: why no FD in eigrp

From: Mas Kato (loomis_towcar@xxxxxxxxxxxxxx)
Date: Thu Dec 06 2001 - 05:05:02 GMT-3


   
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Now that I think about it, another way to accomplish your objective would have
been to use a 'distibute-list in' for those 10-networks under the OSPF process
on R2. At this point, the situation would have been the reverse of your origina
l situation. The networks would have appeared in your OSPF database but the rou
ting table would have shown your EIGRP-external routes with their default admin
 distance of 170.

Regards,

Mas
https://ecardfile.com/id/mkato

> Liu Jianxin-qch1927 <Jianxin.Liu@invisix.com>Cc: ccielab@groupstudy.com, sfel
dberg@edeltacom.com
> RE: why no FD in eigrpDate: Thu, 6 Dec 2001 10:04:00 +0800
>Reply-To: Liu Jianxin-qch1927 <Jianxin.Liu@invisix.com>
>
>Mas,
>
>You are right. I changed the distance on R2 to 100 for external routes which b
elow the OSPF 110.
>Then I can see the routes in the routing table coming from eigrp.
>
>On R2
>
>router eigrp 100
> network 199.5.211.0
> distance eigrp 90 100 (Add this one, which the distance is below 110 OSPF)
>!
>router ospf 1
> network 133.5.1.1 0.0.0.0 area 1
> network 199.5.211.7 0.0.0.0 area 0
> area 1 range 133.5.1.0 255.255.255.0
>
>R2#sh ip eigrp top
>IP-EIGRP Topology Table for AS(100)/ID(199.5.211.7)
>
>Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
> r - Reply status
>
>P 10.32.4.32/27, 1 successors, FD is 25651200
> via 199.5.211.8 (25651200/25625600), Ethernet0
>P 10.32.5.32/27, 1 successors, FD is 25651200
> via 199.5.211.8 (25651200/25625600), Ethernet0
>P 199.5.211.0/24, 1 successors, FD is 281600
> via Connected, Ethernet0
>
>R2#show ip route
>gateway of last resort is 199.5.211.4 to network 0.0.0.0
>
>C 199.5.211.0/24 is directly connected, Ethernet0
> 10.0.0.0/8 is variably subnetted, 14 subnets, 2 masks
>D EX 10.32.4.32/27 [100/25651200] via 199.5.211.8, 00:08:35, Ethernet0
>D EX 10.32.5.32/27 [100/25651200] via 199.5.211.8, 00:08:35, Ethernet0
>
>R2#sh ip eigrp top 10.32.4.32 255.255.255.224
>IP-EIGRP topology entry for 10.32.4.32/27
> State is Passive, Query origin flag is 1, 1 Successor(s), FD is 25651200
> Routing Descriptor Blocks:
> 199.5.211.8 (Ethernet0), from 199.5.211.8, Send flag is 0x0
> Composite metric is (25651200/25625600), Route is External
> Vector metric:
> Minimum bandwidth is 100 Kbit
> Total delay is 2000 microseconds
> Reliability is 255/255
> Load is 1/255
> Minimum MTU is 1500
> Hop count is 1
> External data:
> Originating router is 172.16.0.1
> AS number of route is 1
> External protocol is OSPF, external metric is 11
> Administrator tag is 0 (0x00000000)
>
>Although I cannot make sure the result for this, but It works! Maybe as you me
ntioned,
>this is an artifact of the router's selection process.
>
>Thanks,
>
>Jianxin
>
>-----Original Message-----
>From: Mas Kato [mailto:loomis_towcar@speedracer.com]
>Sent: Wednesday, December 05, 2001 3:34 PM
>To: Jianxin.Liu
>Cc: ccielab@groupstudy.com; sfeldberg@edeltacom.com
>Subject: RE: why no FD in eigrp
>
>
>Jianxin,
>
>When the 10-networks are redistributed from OSPF into EIGRP on R1 they will be
 advertised to R2 as EIGRP-external routes, so their administrative distance at
 R2 will be 170--less favorable than the way the routes are known via OSPF inte
rnally to R2. Perhaps setting the FD to inaccessable is an artifact of the rout
er's selection process.
>
>Try changing the AD for EIGRP-external routes on R2 to something less than 110
 and see if that accomplishes what you want.
>
>Regards,
>
>Mas Kato
>https://ecardfile.com/id/mkato
>
>> Liu Jianxin-qch1927 <Jianxin.Liu@invisix.com> SFeldberg@edeltacom.com, Mas K
ato <loomis_towcar@speedracer.com> RE: why no FD in eigrpDate: Wed, 5 Dec 2001
10:32:22 +0800
>>
>>Thanks all,
>>
>>Here is the configuration for R1
>>router eigrp 100
>> redistribute ospf 1
>> network 199.5.211.0
>> default-metric 100 100 255 1 1500
>>!
>>router ospf 1
>> network 199.5.211.0 0.0.0.255 area 0
>>
>>Here is the configuration for R2
>>router eigrp 100
>> network 199.5.211.0
>>!
>>router ospf 1
>> network 133.5.1.1 0.0.0.0 area 0
>> network 199.5.211.7 0.0.0.0 area 0
>>
>>
>>Please notes that both R1 and R2 run OSPF and eigrp. But I only redistribute
ospf into eigrp on R1.
>>
>>And I have default metric in eigrp for redistribution.
>>
>>I think maybe I also need redistribute ospf to eigrp on R2. But my questions
is: Must I do so to solve the problem?
>>
>>Thanks,
>>
>>Jianxin
>>
>>
>>-----Original Message-----
>>From: SFeldberg@edeltacom.com [mailto:SFeldberg@edeltacom.com]
>>Sent: Wednesday, December 05, 2001 4:26 AM
>>To: Mas Kato
>>Cc: ccielab@groupstudy.com; nobody@groupstudy.com; Jianxin.Liu
>>Subject: Re: why no FD in eigrp
>>
>>
>>I was thinking that too at first. I perceived that value as the metric to
>>reach the advertising host (199.5.211.8), who's network was included in the
>>EIGRP routing process. Jianxin - let's see some configs.
>>
>>Steve
>>sfeldberg@edeltacom.com
>>
>>
>>

>> "Mas Kato"

>> <loomis_towcar@speed To: sfeldberg@edeltacom.co
m
>> racer.com> cc: ccielab@groupstudy.com

>> Sent by: Subject: Re: why no FD in
eigrp
>> nobody@groupstudy.co

>> m

>>

>>

>> 12/04/2001 03:16 PM

>> Please respond to

>> "Mas Kato"

>>

>>

>>
>>
>>
>>
>>[demime could not interpret encoding binary - treating as plain text]
>>Steve,
>>
>>You're probably right, but I can't help but wonder how EIGRP is calculating
>>the first term in: (25651200/25625600), which is supposed to be the (total
>>cost to the advertised route/cost to the neighbor advertising the route)...
>>
>>Regards,
>>
>>Mas Kato
>>https://ecardfile.com/id/mkato
>>
>>> SFeldberg@edeltacom.com Re: why no FD in eigrp Liu Jianxin-qch1927
>><Jianxin.Liu@invisix.com>Cc: ccielab@groupstudy.com, nobody@groupstudy.com
>>>Date: Tue, 4 Dec 2001 13:40:11 -0500
>>>Reply-To: SFeldberg@edeltacom.com
>>>
>>>No way for EIGRP to calculate a metric for the OSPF routes. No metric =
>>>infinity = inaccessible. Remember that IGRP/EIGRP require the application
>>>of 5 metric values during redistribution, or to have a default-metric
>>>applied to the routing process in config-router mode.
>>>
>>>Steve
>>>
>>>
>>>
>>
>>> Liu
>>
>>> Jianxin-qch1927 To: ccielab@groupstudy.com
>>
>>> <Jianxin.Liu@in cc:
>>
>>> visix.com> Subject: why no FD in eigrp
>>
>>
>>
>>>
>>>
>>>
>>>
>>>Group,
>>>
>>>I use a simple topology as follow:
>>>
>>> R1 R2
>>> | |
>>>------------------------- LAN
>>>|
>>>R3
>>>
>>>
>>>R1 and R2, R3 run OSPF on their ethernet interface.
>>>
>>>R1 and R2 also run eigrp on the Etherent interface.
>>>
>>>Then I redistribute OSPF into eigrp on R1 and hope to see these routes on
>>>R2's routing table.
>>>But I only saw the OSPF route on R2.
>>>
>>>R2#show ip route
>>>O IA 10.32.4.32/27 [110/11] via 199.5.211.60, 00:06:21, Ethernet0
>>>O IA 10.32.5.32/27 [110/12] via 199.5.211.50, 00:06:21, Ethernet0
>>> [110/12] via 199.5.211.51, 00:06:21, Ethernet0
>>>
>>>
>>>R2#show ip eigrp top
>>>P 10.32.4.32/27, 0 successors, FD is Inaccessible
>>> via 199.5.211.8 (25651200/25625600), Ethernet0
>>>P 10.32.5.32/27, 0 successors, FD is Inaccessible
>>> via 199.5.211.8 (25651200/25625600), Ethernet0
>>>
>>>Notes the FD in the eigrp is inaccessible here. So I think this is the
>>>reason why the eigrp route can
>>>not insert into the routing table. But I do not know why FD inaccessible?
>>>
>>>Can anyone help?
>>>
>>>Thanks,
>>>
>>>Jianxin
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