In late 1997, IANA transferred responsibility for IP number administration from Network Solutions, Inc. to ARIN[]. ARIN officially opened for operation on October 22, 1997. ARIN is responsible for the allocation of Internet Protocol (IP) numbers in the following geographical areas: • North America • South America • The Caribbean • Sub-Saharan Africa ARIN currently manages allocation and registration services for IP numbers, AS numbers, IN-ADDR.ARPA, and IP6.INT inve..
In Figure 20-15, the group traffic that flows over the path from the RP (R3) to R5 to R4 is called a shared distribution tree. It is also called a root-path tree (RPT) because it is rooted at the RP. If the network has multiple sources for the same group, traffic from all the sources would first travel to the RP (as shown with the traffic from host S1 in Figure 20-14), and then travel down this shared RPT to all the receivers. Because all sources in the multicast group use a ..
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..
Many router commands will accept a hostname in place of an IP address. This helps make the configuration files more readable because it is much easier for humans to work with device names than IP addresses. However, the router still needs to have a way of translating these names into the IP addresses that it prefers to work with. Cisco supports two methods for resolving hostnames into IP addresses. You can either use static host entries, as we do in this recipe, or DNS, as we..
In this example, we will assume that we have a host device, acting as the sender, with IP address 192.168.100.202 and a second host, acting as the receiver, with IP address 192.168.9.100. The first host is connected to FastEthernet0/0 Router1: Router1#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router1(config)#interface FastEthernet0/0 Router1(config-if)#ip address 192.168.100.21 255.255.255.0 Router1(config-if)#ip rsvp bandwidth 128..
