RE: ospf eigrp redistribution rules

From: Rivron Francois (Francois.Rivron@xxxxxxxxx)
Date: Tue Nov 20 2001 - 10:44:33 GMT-3


   
more informations :

It's seem may problem about redistribution between eigrp et ospf comes from
the way as network statement is used under ospf.

On a single router :

interface Serial0
 ip address 1.1.1.1 255.255.255.0

interface Serial1
 ip address 2.2.2.2 255.255.255.0

router eigrp 1
 redistribute ospf 1 metric 1544 100 255 1 1500
 network 2.0.0.0

router ospf 1
 redistribute eigrp 1 subnets
 network 1.1.1.0 0.0.0.255 area 0
 network 3.3.3.0 0.0.0.255 area 0

1> With
router ospf 1
 redistribute eigrp 1 subnets
 network 1.1.1.0 0.0.0.255 area 0
 network 3.3.3.0 0.0.0.255 area 0

Router#sh ip ei topo
IP-EIGRP Topology Table for process 1

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - Reply status

P 1.1.1.0/24, 1 successors, FD is 16648960
         via Redistributed (16648960/0)
P 2.2.2.0/24, 1 successors, FD is 2169856
         via Connected, Serial1
P 3.3.3.0/24, 1 successors, FD is 16648960
         via Redistributed (16648960/0)

Router#sh ip os da rou 3.3.3.3

       OSPF Router with ID (3.3.3.3) (Process ID 1)

                Router Link States (Area 0)
....

    Link connected to: a Stub Network
     (Link ID) Network/subnet number: 3.3.3.3
     (Link Data) Network Mask: 255.255.255.255
      Number of TOS metrics: 0
       TOS 0 Metrics: 1

    Link connected to: a Stub Network
     (Link ID) Network/subnet number: 1.1.1.0
     (Link Data) Network Mask: 255.255.255.0
      Number of TOS metrics: 0
       TOS 0 Metrics: 64

2> With
router ospf 1
 redistribute eigrp 1 subnets
 network 1.1.1.1 0.0.0.0 area 0
 network 3.3.3.3 0.0.0.0 area 0

Router#sh ip ei topo
IP-EIGRP Topology Table for process 1

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - Reply status

P 2.2.2.0/24, 1 successors, FD is 2169856
         via Connected, Serial1

Router#sh ip os da rou 3.3.3.3

       OSPF Router with ID (3.3.3.3) (Process ID 1)

                Router Link States (Area 0)
....

    Link connected to: a Stub Network
     (Link ID) Network/subnet number: 3.3.3.3
     (Link Data) Network Mask: 255.255.255.255
      Number of TOS metrics: 0
       TOS 0 Metrics: 1

 Link connected to: a Stub Network
     (Link ID) Network/subnet number: 1.1.1.0
     (Link Data) Network Mask: 255.255.255.0
      Number of TOS metrics: 0
       TOS 0 Metrics: 64

> -----Message d'origine-----
> De: Rivron Francois [SMTP:Francois.Rivron@ei-rsi.fr]
> Date: mardi 20 novembre 2001 11:22
> @: ccielab@groupstudy.com
> Objet: ospf eigrp redistribution rules
>
> Hi all,
>
> Is anyone have an explanation about the following observations :
>
> When doing an redistribution from eigrp in ospf, the routes information
> source is the topologie table of eigrp.
>
> When doing redistribution from ospf in eigrp, the route information source
> is the routing table entries with an OSPF code.
>
> Francois.



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