RE: why no FD in eigrp

From: Liu Jianxin-qch1927 (Jianxin.Liu@xxxxxxxxxxx)
Date: Wed Dec 05 2001 - 23:04:00 GMT-3


   
Mas,

You are right. I changed the distance on R2 to 100 for external routes which be
low 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 men
tioned,
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 inter
nally to R2. Perhaps setting the FD to inaccessable is an artifact of the route
r'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 Ka
to <loomis_towcar@speedracer.com> RE: why no FD in eigrpDate: Wed, 5 Dec 2001 1
0:32:22 +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 o
spf 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 i
s: 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.com

> racer.com> cc: ccielab@groupstudy.com

> Sent by: Subject: Re: why no FD in e
igrp
> 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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