From: Leigh Bichard (Leigh.Bichard@btinternet.com)
Date: Sun Jun 29 2003 - 13:46:13 GMT-3
This question has been touched on in the archives but I can't seem to find a
final answer.
The RIP lab 8 of the v4.0 IPexpert workbook asks to use diffferent
authentication keys between 3 routers on a FR multipoint network. This can be
done using the config below and it seems to work - full connectivity etc. When
you check the sample solution - they use some crazy policy routing to direct
the updates and I can't see why.
The only thing I can think of is that they use the same unnumbered address so
the core will send updates for R5 to R6 and vice versa - which is ineffecient.
Thanks
Leigh
Config on multipoint core - r2
========================
interface Tunnel5
description Tunnel for RIP to R5
ip unnumbered Serial0.256
ip rip authentication mode md5
ip rip authentication key-chain R2_to_R5
tunnel source Serial0.256
tunnel destination 150.50.100.5
!
interface Tunnel6
description Tunnel for RIP to R6
ip unnumbered Serial0.256
ip rip authentication mode md5
ip rip authentication key-chain R2_to_R6
tunnel source Serial0.256
tunnel destination 150.50.100.6
!
router rip
version 2
redistribute connected route-map CONNECTED
redistribute static metric 1
passive-interface Serial0.256
offset-list 2 in 4
network 150.50.0.0
no auto-summary
Config on r5
============
interface Tunnel5
description Tunnel for RIP to R2
ip unnumbered Serial0
ip rip authentication mode md5
ip rip authentication key-chain R5_to_R2
tunnel source Serial0
tunnel destination 150.50.100.2
!
router rip
version 2
redistribute connected route-map CONNECTED
passive-interface Serial0
network 150.50.0.0
no auto-summary
Config on r6
============
interface Tunnel6
ip unnumbered Serial0
ip rip authentication mode md5
ip rip authentication key-chain R6_to_R2
tunnel source Serial0
tunnel destination 150.50.100.2
!
router rip
version 2
redistribute connected route-map CONNECTED
passive-interface Serial0
network 150.50.0.0
no auto-summary
This archive was generated by hypermail 2.1.4 : Fri Jul 04 2003 - 11:11:14 GMT-3