From: Jason Cash (cash2001@swbell.net)
Date: Tue Jun 17 2003 - 15:37:30 GMT-3
Please explain..
IPE Topo
R2(s0)-----R5(s0)
|
|R6(s1/0)
Router 5,6,7 share common Ethernet.
R2
s0 172.29.100.2/28
R5
s0 172.29.100.5/28
e0 172.29.200.5/25
R6
s0 172.29.100.5/28
e0 172.29.200.6/25
R7
e0 172.29.200.7/25
s0 172.29.78.1/30
I setup a summary-address on R5 'area 0 range 172.29.200.0 255.255.255.0'
but that summary address is not showing up on R2 or R6.
However, the summary address on R7 is showing up on R2:
r2#si ospf | inc 78.0
O IA 172.29.78.0/24 [112/138] via 172.29.100.5, 00:38:51, Serial0.100
r5#si ospf | inc Null
O 172.29.200.0/24 is a summary, 00:33:48, Null0
I guess my question is, why doesn't the summary from R5 propagate to R2, R6?
In redistribution (on R2 mutual RIP/OSPF) it appears that the only way to
get these routes into RIP as to assign
the 'range' on R2 like the solution advises. Assuming I got that summarized
172.29.200.0/24 route to R2, why would it not redist. That into OSPF?
Also, why is a Null0 route inserted on R5 and not on R7? If anyone has a
link to explain this, it would be much appreciated!
Configs:
R2
router ospf 1
log-adjacency-changes
area 0 authentication message-digest
area 0 range 172.29.100.0 255.255.255.0
area 12 range 172.29.12.0 255.255.255.0
area 12 virtual-link 192.168.1.1 authentication
area 12 virtual-link 192.168.1.1 message-digest-key 1 md5 ipexpert
redistribute rip subnets route-map rip2ospf
network 172.29.12.0 0.0.0.63 area 12
network 172.29.25.0 0.0.0.255 area 0
network 172.29.100.0 0.0.0.7 area 0
network 192.168.2.2 0.0.0.0 area 2
neighbor 172.29.100.5
neighbor 172.29.100.6
distance ospf inter-area 112 external 114
R5
router ospf 1
log-adjacency-changes
area 0 authentication message-digest
area 0 range 172.29.200.0 255.255.255.0
network 172.29.25.0 0.0.0.255 area 0
network 172.29.100.0 0.0.0.7 area 0
network 172.29.200.0 0.0.0.127 area 0
network 192.168.5.5 0.0.0.0 area 5
R7
router ospf 1
area 0 authentication message-digest
area 78 nssa default-information-originate
area 78 range 172.29.78.0 255.255.255.0
redistribute connected subnets route-map loop
network 172.29.78.0 0.0.0.3 area 78
network 172.29.200.0 0.0.0.127 area 0
This archive was generated by hypermail 2.1.4 : Fri Jul 04 2003 - 11:10:59 GMT-3