From: Mas Kato (tealp729@xxxxxxxx)
Date: Wed May 09 2001 - 18:31:20 GMT-3
Don't know if this will work, but I'd be curious to see if it does--on
both of R1's neighbor statements, try changing the update-source to
206.11.4.1 and specifying ebgp-multihop (of course, you'll have make
complimentary changes on R2 and R5). Make sure the metrics for the
routes to be load-balanced are exactly the same.
Regards,
Mas
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Mohamed Heeba
Sent: Wednesday, May 09, 2001 7:05 AM
To: 'ccielab@groupstudy.com'
Subject: BGP maximum paths
guys ,
i have a router R1 in AS 300 ,connecting to another AS 200 thourgh two
serial connection ,each one going to different routers R2 and R5 (they
are
in confederation in As 200)
the requirement is to load balance the traffic across both of the links.
i have enabled the maximum paths 2 command on the BGP .
but still the routes didnt appear in the routing table .
they are on the bgp table ,showing two paths ,the prefered one is even
the
one with the lowest ip address .
R1 is running 11.1 , do i need to enable anything else to get the routes
in
the ip route table ???
here is R1 configs
------------------------------
interface Loopback0
ip address 206.11.5.1 255.255.255.0 secondary
ip address 206.11.6.1 255.255.255.0 secondary
ip address 206.11.7.1 255.255.255.0 secondary
ip address 206.11.4.1 255.255.255.0
no ip mroute-cache
no ip route-cache
!
interface Serial0
ip address 206.11.20.18 255.255.255.248
no ip mroute-cache
no ip route-cache
bandwidth 64
!
interface Serial1
ip address 206.11.20.66 255.255.255.248
no ip mroute-cache
no ip route-cache
bandwidth 64
!
router bgp 300
network 206.11.4.0
network 206.11.5.0
network 206.11.6.0
network 206.11.7.0
neighbor 206.11.20.17 remote-as 200
neighbor 206.11.20.65 remote-as 200
maximum-paths 2
no auto-summary
!
r2501#sh ip bgp
BGP table version is 19, local router ID is 206.11.4.1
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
* 10.0.0.2/32 206.11.20.65 0 200 i
*> 206.11.20.17 0 0 200 i
* 10.0.0.4/32 206.11.20.65 0 200 i
*> 206.11.20.17 0 200 i
* 10.0.0.5/32 206.11.20.65 0 0 200 i
*> 206.11.20.17 0 200 i
* 10.1.1.0/24 206.11.20.65 0 200 100 i
*> 206.11.20.17 0 200 100 i
* 20.1.1.0/24 206.11.20.65 0 200 100 i
*> 206.11.20.17 0 200 100 i
* 22.1.1.0/24 206.11.20.65 0 200 100 i
*> 206.11.20.17 0 200 100 i
* 24.1.1.0/24 206.11.20.65 0 200 100 i
*> 206.11.20.17 0 200 100 i
*> 206.11.4.0 0.0.0.0 0 32768 i
*> 206.11.5.0 0.0.0.0 0 32768 i
*> 206.11.6.0 0.0.0.0 0 32768 i
*> 206.11.7.0 0.0.0.0 0 32768 i
r2501#
r2501#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate
default
U - per-user static route
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
B 10.0.0.2/32 [20/0] via 206.11.20.17, 00:14:16
B 10.1.1.0/24 [20/0] via 206.11.20.17, 00:14:16
B 10.0.0.4/32 [20/0] via 206.11.20.17, 00:14:17
B 10.0.0.5/32 [20/0] via 206.11.20.17, 00:14:17
20.0.0.0/24 is subnetted, 1 subnets
B 20.1.1.0 [20/0] via 206.11.20.17, 00:14:17
22.0.0.0/24 is subnetted, 1 subnets
B 22.1.1.0 [20/0] via 206.11.20.17, 00:14:17
24.0.0.0/24 is subnetted, 1 subnets
B 24.1.1.0 [20/0] via 206.11.20.17, 00:14:17
C 206.11.5.0/24 is directly connected, Loopback0
C 206.11.4.0/24 is directly connected, Loopback0
C 206.11.7.0/24 is directly connected, Loopback0
C 206.11.6.0/24 is directly connected, Loopback0
206.11.20.0/29 is subnetted, 2 subnets
C 206.11.20.64 is directly connected, Serial1
C 206.11.20.16 is directly connected, Serial0
r2501#
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