RE: Redistribution Question

From: jim.phillipo@guardent.com
Date: Fri Nov 01 2002 - 12:25:38 GMT-3


* ***************************
********************
                                           * *
*
 
r8_172.28.2.8/24------------172.28.2.6/24_r6_62.8.1.6/25---------62.8.1.6/25
_r5
                                            ***************************
********************
                                                   AS100
AS100

                             
Router 8 and Router 6 are running EIGRP. Router 6 has only the Serial
interface connecting to r8 advertized in EIGRP

Router 6 is redisributing BGP into EIGRP. All the BGP routes from as100
appear in r8 table

The 62.8.1.0 network that is directly connected to r6 does not ?

Here are the configs:

r6
router eigrp 1
 redistribute ospf 1 metric 10000 1000 255 1 1500
 redistribute bgp 100 metric 10000 1000 255 1 1500
 network 172.28.2.0 0.0.0.255
 no auto-summary
!
!
router bgp 100
 no synchronization
 redistribute eigrp 1
 redistribute ospf 1
 neighbor 62.5.1.3 remote-as 200
 neighbor 62.8.1.5 remote-as 200
 no auto-summary
!
ip classless

r8
!
router eigrp 1
 network 10.10.10.0 0.0.0.255
 network 12.12.12.0 0.0.0.255
 network 172.28.2.0 0.0.0.255
 no auto-summary
!

r5
router bgp 200
 no synchronization
 network 62.8.1.0 mask 255.255.255.128
 network 62.9.0.0 mask 255.255.0.0
 neighbor 62.8.1.6 remote-as 100
 neighbor 62.9.1.1 remote-as 300
 neighbor 62.9.3.3 remote-as 200
 neighbor 62.9.3.3 next-hop-self
 no auto-summary

r6#sho ip bgp
BGP table version is 7, local router ID is 14.1.1.1
Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network Next Hop Metric LocPrf Weight Path
*> 10.10.10.0/24 172.28.2.8 2297856 32768 ?
*> 12.12.12.0/24 172.28.2.8 2195456 32768 ?
* 62.5.1.0/25 62.8.1.5 0 200 i
*> 62.5.1.3 0 0 200 i
* 62.8.1.0/25 62.8.1.5 0 0 200 i
*> 62.5.1.3 0 200 i
* 62.9.0.0/16 62.8.1.5 0 0 200 i
*> 62.5.1.3 0 0 200 i
*> 172.28.2.0/24 0.0.0.0 0 32768 ?
r6#

r6#sho ip eigrp topo
IP-EIGRP Topology Table for AS(1)/ID(14.1.1.1)

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

P 10.10.10.0/24, 1 successors, FD is 2297856
         via 172.28.2.8 (2297856/128256), Serial0
P 12.12.12.0/24, 1 successors, FD is 2195456
         via 172.28.2.8 (2195456/281600), Serial0
P 14.1.1.0/24, 1 successors, FD is 512000
         via Rconnected (512000/0)
P 62.9.0.0/16, 1 successors, FD is 512000, tag is 200
         via Redistributed (512000/0)
P 62.8.1.0/25, 1 successors, FD is 512000
         via Rconnected (512000/0)
P 62.5.1.0/25, 1 successors, FD is 512000
         via Rconnected (512000/0)
P 172.28.1.0/28, 1 successors, FD is 512000
         via Rconnected (512000/0)
P 172.28.2.0/24, 1 successors, FD is 2169856
         via Connected, Serial0
P 172.26.1.0/24, 1 successors, FD is 512000
         via Redistributed (512000/0)
r6#

From: Ebru Toker [mailto:EToker@tepum.com.tr]
Sent: Thursday, October 31, 2002 10:22 PM
To: Jim Phillipo; ccielab@groupstudy.com
Subject: RE: Redistribution Question

If netB is learned from an IBGP peer, it can not be redistributed into IGP
for loop avoidance.But if you insist on redistributing it you can use the
command "redistribute bgp redistribute-internal". Probably the other BGP
routes were learned from an EBGP peer, so you can see them in your EIGRP
table.

Ebru

-----Original Message-----
From: jim.phillipo@guardent.com [mailto:jim.phillipo@guardent.com]
Sent: 31 Ekim 2002 Per~embe 22:56
To: ccielab@groupstudy.com
Subject: Redistribution Question

Router A has BGP and EIGRP running on it. Net B is directly connected and is
in the BGP table. Net B is not part of the EIGRP process. I am
redistributing BGP into EIGRP. Net B does not appear in the EIGRP next hop
router but all the other BGP routes do ?

Is there a gotcha revolving around redistribution of networks that are
directly connected ?



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