The IPv6 mobility feature, defined in RFC 3775, Mobility Support in IPv6, allows users to stay connected while moving about the network. An IPv6 mobile node has a home address on its home network and a care-of address on its current network. A node communicating with a mobile node is called a correspondent node of the mobile node. The association between the home address and the care-of address of a mobile node is known as a binding. When a mobile node roams away from ..
Abilene[] is another project of UCAID. It's complementary to Internet2 in the sense that the main goal of Abilene is to provide a primary backbone network for the Internet2 project. UCAID, in partnership with Qwest Communications, Nortel Networks, and Cisco Systems, has developed the Abilene network. Abilene provides the high-performance interconnect services among the Internet2 regional aggregation points. The primarily OC48c (2.5 Gbps) POS (Packet Over SONET) Abilene netw..
In Cisco routers, IGRP does not recognize the 0.0.0.0/0 route as the default route. It uses its own method of propagating default route with the ip default-network command. The ip default-network command specifies a major network address and flags it as a default network. This major network could be directly connected, defined by a static route, or discovered by a dynamic routing protocol. The network specified by the ip default-network command must be in the routing table b..
When you first receive a Catalyst from Cisco, it has no password set. In other words, the password is <ENTER> to enter both the EXEC and privilege modes. Your first task as a conscientious network administrator should be to change the passwords to the unit. This helps to prevent unauthorized children in adult form from modifying the Catalyst and disrupting your network. Example 4-11 shows a Catalyst session where the user changes the EXEC and enable passwords. The user ..
When EIGRP neighbors first become neighbors, they begin exchanging topology information using Update messages using these rules: ■ When a neighbor first comes up, the routers exchange full updates, meaning the routers exchange all topology information. ■ After all prefixes have been exchanged with a neighbor, the updates cease with that neighbor if no changes occur in the network. There is no periodic reflooding of topology data. ■ If something changes–for example, on..
