The decommissioning of the NSFNET in 1995 marked the beginning of a new era. The Internet today is a playground for thousands of providers competing for market share. Research networks such as Abilene and vBNS are struggling to stay ahead of the curve, as an evolving multibillion-dollar industry continues to exceed all expectations. For many businesses and organizations, connecting their networks to the global Internet is no longer a luxury, but a requirement for staying comp..
Bootstrap Routers and Candidate RPs
BSRs and RPs are a critical part of the scalability of PIM V2. This section discusses the process of BSR election and RP determination in more detail. This discussion is included for completeness; however, it is recommended that you use auto-RP instead of BSR. You will learn about auto-RP in the next section. A large sparse mode network should have multiple candidate RPs, which should be placed in the backbone. Candidate RPs are configured via the ip pim rp-cand..
This section provides an overview of RSVP and its enhancements to support MPLS-TE applications. In the remainder of this chapter, the directional terms such as downstream, upstream, previous hop, and next hop are defined with respect to the direction of data packet flow. Originally, RSVP was designed as a protocol to install resource reservation states for individual data flows along a destination-based routed path (that is, along an IGP path).[1][2] An RSVP session is defin..
Monitoring Frame Relay Traffic Shaping Information
This section uses a hub-and-spoke Frame Relay network to illustrate the Cisco IOS show commands, which are useful for monitoring Frame Relay Traffic Shaping information on a Cisco router. The hub-and-spoke Frame Relay network is depicted in Figure 5-4. Figure 5-4. Network Topology for Configuration Examples In this setup, a hub-and-spoke Frame Relay network with a central hub site is connected to three remote branch office sites. The central hub site is connected to ..
Redistributing External Routes into OSPF
The redistribute configuration command allows you to redistribute routes from another dynamic routing protocol into an OSPF process: Router1#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router1(config)#router ospf 55 Router1(config-router)#redistribute eigrp 11 subnets Router1(config-router)#exit Router1(config)#end Router1# One of the dangers when redistributing between routing protocols is that you will accidentally im..
