Multiprotocol BGP in the SuperCom Network
To illustrate the interaction of per-VPN routing protocols with the MP-BGP used in the service provider network core, consider the case of the FastFood customer in the SuperCom network. Let’s assume that the San Jose site is using OSPF to interact with the SuperCom backbone, the Lyon and Santa Clara sites are using RIP, and the Redwood site is using no routing protocol—there is a static route configured on the San Jose PE-router and the default route configured on the Re..
Understanding the Backbone Concept
As mentioned earlier, IS-IS has a two-layer hierarchy. Level 1 routers contain the topology information about their area only, and default to the closest area border router. Level 2 routers route toward the area without considering the internal structure of the area. Level 2 routers patch multiple areas, and contain complete information about routes in other areas. All routers within level 2 must be contiguous—routing between areas passes through the level 2 r..
Multicast Addresses for Permanent Groups
IANA has reserved two ranges of permanent multicast IP addresses. The main distinction between these two ranges of addresses is that the first range is used for packets that should not be forwarded by routers, and the second group is used when packets should be forwarded by routers. The range of addresses used for local (not routed) purposes is 224.0.0.0 through 224.0.0.255. These addresses should be somewhat familiar from the routing protocol discussions earlier in the boo..
MPLS Nonstop Forwarding Architecture
MPLS control-plane SSO requires two instances (active and standby) of IP routing protocols and label-distribution protocols. The active instances reside on the active control processor that controls the system. The standby instance resides on the standby control processor that maintains state for the stateful components and waits to become active following a control-plane switchover. The active instances of IP routing protocols and label-distribution protocols establish sessi..
The first step in configuring IP Mobility in your network is to set up one or more Home Agent routers, which will act as the virtual home base and support tunnels for your roaming devices: RouterHome#configure terminal Enter configuration commands, one per line. End with CNTL/Z. RouterHome(config)#interface Loopback0 RouterHome(config-if)#ip address 192.168.9.1 255.255.255.255 RouterHome(config-if)#exit RouterHome(config)#router mobile RouterHome(config-router)#e..
