Juniper JUNOSE 11.2.X BGP AND MPLS

192.168.132.0
192.168.133.0
...
192.168.255.0
Without CIDR, the ISP has to advertise a route to each address, as shown in Figure 4 on
page 10.
Figure 4: Routing Without CIDR
With CIDR, the ISP can aggregate the routes as 192.168.128.0/17 and advertise a single
address to that prefix, as shown in Figure 5 on page 11.
Copyright © 2010, Juniper Networks, Inc.10
JunosE 11.2.x BGP and MPLS Configuration Guide