From: Oliver Ziltener (ziltener@netcloud.ch)
Date: Sun May 25 2003 - 11:29:08 GMT-3
This question is based on IPexpert WB4 section 29 BGP:
Topology:
R2 in as 12
R5 in as 5
R6 in as 6
R7 and R8 in as 78
---- R5 ----
R2 ----- | ----R7---R8
-----R6 ----
All peerings via loopback.
On R8 we have 3 networks 10.78.1.0/24; 10.78.2.0/24; 10.78.3.0/24
Exercise: Ensure that R2 will utilize all available path simultaneuosly to
reach the network 10.78.X.X
I did:
on R7 & R8
bgp 78
maximum-path 2
but on R2 i see no loadbalancing.
On R2 i see:
R2#show ip bgp
BGP table version is 4, local router ID is 192.168.2.2
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
* 10.78.1.0/24 192.168.6.6 0 6 78 i
*> 192.168.5.5 0 5 78 i
* 10.78.2.0/24 192.168.6.6 0 6 78 i
*> 192.168.5.5 0 5 78 i
* 10.78.3.0/24 192.168.6.6 0 6 78 i
*> 192.168.5.5 0 5 78 i
R2#
R2#
R2#
R2#
R2#show ip route bgp
10.0.0.0/24 is subnetted, 5 subnets
B 10.78.1.0 [20/0] via 192.168.5.5, 00:00:34
B 10.78.2.0 [20/0] via 192.168.5.5, 00:00:34
B 10.78.3.0 [20/0] via 192.168.5.5, 00:00:34
R2#
BGP has one route declared as "best". First I expected that in the routing
table on R2 should be 2 path to the destination networks, but that was not
happen.
I the IPexpert solution I didn't find something to reach the goal, perhaps
they forgot to do it....
Is there a way to have loadbalancing?
thanks Oliver
This archive was generated by hypermail 2.1.4 : Mon Jun 02 2003 - 15:13:47 GMT-3