From: Plank, Jason (JPlank@concordefs.com)
Date: Sun May 14 2006 - 21:37:37 ART
My understanding of the question was not does BGP require, but does RIP and
EIGRP require it the way that BGP does.
-------------------
Jason Plank
Network Engineer
101 Bellevue Parkway
Wilmington, DE 19809
E-mail: JPlank@concordefs.com
Phone: 302-793-5913
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Scott Morris
Sent: Sunday, May 14, 2006 8:31 PM
To: 'Brian Dennis'; 'Guzman, Chris'; ccielab@groupstudy.com
Subject: RE: Redistribute OSPF into IGB
You sure about that? My experience has been otherwise. (and my router's
experience it seems, unless we're both selectively dysfunctional!)
By default, BGP will only accept internal OSPF routes... Even though they
SHOW as redistributed, the BGP RIB doesn't like 'em:
Emanon-R3(config-router)#do sh ip ro ospf
102.0.0.0/24 is subnetted, 1 subnets
O E2 102.1.1.0 [110/20] via 172.17.1.4, 00:01:25, Serial1/1
103.0.0.0/24 is subnetted, 1 subnets
O E2 103.1.1.0 [110/20] via 172.17.1.4, 00:01:25, Serial1/1
100.0.0.0/24 is subnetted, 1 subnets
O E2 100.1.1.0 [110/20] via 172.17.1.4, 00:01:25, Serial1/1
101.0.0.0/24 is subnetted, 1 subnets
O E2 101.1.1.0 [110/20] via 172.17.1.4, 00:01:25, Serial1/1
172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks
O 172.16.30.1/32 [110/65] via 172.17.1.4, 7w0d, Serial1/1
O E2 207.49.164.0/24 [110/20] via 172.17.1.4, 00:01:25, Serial1/1
Emanon-R3(config-router)#
Emanon-R3(config-router)#do sh ip ro 172.16.30.1
Routing entry for 172.16.30.1/32
Known via "ospf 1", distance 110, metric 65, type intra area
Redistributing via bgp 653
Advertised by bgp 653
Last update from 172.17.1.4 on Serial1/1, 7w0d ago
Routing Descriptor Blocks:
* 172.17.1.4, from 172.16.30.1, 7w0d ago, via Serial1/1
Route metric is 65, traffic share count is 1
Emanon-R3(config-router)#
Emanon-R3(config-router)#do sh ip ro 100.0.0.0
Routing entry for 100.0.0.0/24, 1 known subnets
Redistributing via bgp 653
O E2 100.1.1.0 [110/20] via 172.17.1.4, 00:02:02, Serial1/1
Emanon-R3(config-router)#do sh ip bgp
BGP table version is 49134, local router ID is 15.15.15.15
Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal,
r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 10.4.4.0/24 172.17.1.4 0 0 4 i
*> 15.15.15.0/24 0.0.0.0 0 32768 i
*> 30.30.30.0/24 0.0.0.0 0 32768 ?
*> 31.31.31.0/24 0.0.0.0 0 32768 i
*> 172.16.30.0/24 172.17.1.4 0 0 4 i
*> 172.16.30.1/32 172.17.1.4 65 32768 ?
* 172.17.1.0/24 172.17.1.4 0 0 4 i
*> 0.0.0.0 0 32768 i
*> 172.17.1.4/32 0.0.0.0 0 32768 ?
*> 172.17.150.0/24 0.0.0.0 0 32768 i
Emanon-R3(config-router)#
So it looks like they should be here, but they are not. Although my
172.16.30.1 (the internal ospf route) is indeed here.
Emanon-R3(config-router)#no red ospf 1
Emanon-R3(config-router)#red ospf 1 match int ext 1 ext 2
Emanon-R3(config-router)#do sh ip bgp
BGP table version is 49139, local router ID is 15.15.15.15
Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal,
r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 10.4.4.0/24 172.17.1.4 0 0 4 i
*> 15.15.15.0/24 0.0.0.0 0 32768 i
*> 30.30.30.0/24 0.0.0.0 0 32768 ?
*> 31.31.31.0/24 0.0.0.0 0 32768 i
*> 100.1.1.0/24 172.17.1.4 20 32768 ?
*> 101.1.1.0/24 172.17.1.4 20 32768 ?
*> 102.1.1.0/24 172.17.1.4 20 32768 ?
*> 103.1.1.0/24 172.17.1.4 20 32768 ?
*> 172.16.30.0/24 172.17.1.4 0 0 4 i
*> 172.16.30.1/32 172.17.1.4 65 32768 ?
* 172.17.1.0/24 172.17.1.4 0 0 4 i
*> 0.0.0.0 0 32768 i
*> 172.17.1.4/32 0.0.0.0 0 32768 ?
*> 172.17.150.0/24 0.0.0.0 0 32768 i
*> 207.49.164.0 172.17.1.4 20 32768 ?
Emanon-R3(config-router)#
So not until the match do they appear...
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
#153, CISSP, et al.
CCSI/JNCI
IPExpert CCIE Program Manager
IPExpert Sr. Technical Instructor
smorris@ipexpert.com
http://www.ipexpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Brian Dennis
Sent: Sunday, May 14, 2006 6:20 PM
To: Guzman, Chris; ccielab@groupstudy.com
Subject: RE: Redistribute OSPF into IGB
No it is not required.
HTH,
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Guzman, Chris
Sent: Sunday, May 14, 2006 2:22 PM
To: ccielab@groupstudy.com
Subject: Redistribute OSPF into IGB
When redistributing from OSPF into RIP or EIGRP is it required to have the
"match internal external 1 external 2" option, in order to get all OSPF
route types into the other protocol, or is this only required when
redistributing into BGP ?
This archive was generated by hypermail 2.1.4 : Thu Jun 01 2006 - 06:33:21 ART