10.3.31.0/24 10.3.32.1 32 ospf IntraArea 2 110
10.3.31.0/24 10.3.33.2 33 ospf IntraArea 2 110
10.3.32.0/24 VLAN32 32 connected 1 0
10.3.33.0/24 VLAN33 33 connected 1 0
10.3.34.0/24 VLAN34 34 connected 1 0
10.3.37.0/24 10.3.33.2 33 ospf IntraArea 2 110
127.0.0.0/8 reject static 0 0
127.0.0.1/32 lo0 connected 1 0
Southeast(config)# show ip route
IP Route Entries
Destination Gateway VLAN Type Sub-Type Metric Dist.
--------------- --------------- ---- --------- ---------- ---------- -----
10.2.21.0/24 VLAN21 21 connected 1 0
10.2.22.0/24 VLAN22 22 connected 1 0
10.2.23.0/24 VLAN23 23 connected 1 0
10.2.29.0/24 10.2.21.1 21 rip 2 120
10.3.31.0/24 10.2.21.1 21 rip 2 120
10.3.33.0/24 10.2.21.1 21 rip 2 120
10.3.37.0/24 10.2.21.1 21 rip 2 120
127.0.0.0/8 reject static 0 0
127.0.0.1/32 lo0 connected 1 0
With this configuration, the routers and host computers in each routing domain are able to communicate with all
other routers and hosts in that domain. In addition, the routers and hosts in the RIP domains can communicate
with all interfaces of the adjacent border router and with hosts attached to those interfaces. (To prevent that cross-
domain communication, you would remove the
redistribute connected
command from the
router rip
context.) Beyond those connected routes on the RIP side, there is no inter-domain communication.
Thus, host Z can ping host X and host L, but not host M or host B. And host M can ping host L, but not host X or
host Y or host A. And so on.
Basic inter-domain protocol redistribution
Route redistribution allows border routers to distribute routes between adjacent routing domains. Thus, the North
router can redistribute routes from the northern RIP domain to the OSPF domain and from the OSPF domain to
the northern RIP domain. Similarly, the South router can redistribute routes from the southern RIP domain to the
OSPF domain and from the OSPF domain to the southern RIP domain. And if both the North and South routers
have redistribution enabled in both directions at the same time, the routes that are redistributed from the RIP
domains to the OSPF domain will be further distributed to the opposite RIP domain, and routers and hosts in all
domains will be able to communicate with each other. (Some subtle complications are explained below.)
For example, in the North and South routers you might add a
redistribute rip
command to the
router
ospf
context and a
redistribute ospf
command to the
router rip
context, like this:
.
.
router ospf
area backbone
redistribute rip
exit
router rip
redistribute connected
redistribute ospf
exit
.
.
280
Aruba 3810 / 5400R Multicast and Routing Guide for ArubaOS-
Switch 16.08
