Required Commands for Configuring EIGRP
Like other interior routing protocols, the template for an EIGRP configuration involves turning on the protocol and identifying participating interfaces. EIGRP also uses an autonomous system (AS) to group routers. To run EIGRP, you must enable the following three items: • The EIGRP process— The routing protocol needs to be started on the router. • The EIGRP autonomous system number— Routers in the same administrative domain should be identified and group..
Snapshot routing is a time-triggered routing update facility that enables a remote "slave" router to learn dynamic routing and service information from a central "master" router during a short active period. This learned information is then stored for a user-configurable period of inactivity (T2) until the next active period. If no routing updates are exchanged during the active period (because a DDR phone number or interface is unavailable), a user-config..
This section briefly covers the IP multicast areas of interest for the CCIE written test. The multicasting protocol was designed to reduce the high bandwidth requirements of technologies, such as video on demand, to a single stream of information to more than one device. Applications include electronic learning, company share meetings (video on demand), and software distribution. Multicasting transmits IP packets from a single source to multiple destinations. The network dev..
Cisco has developed an HSRP SNMP MIB to help manage routers using this feature. You can configure your router to send an SNMP trap every time the routers make an HSRP state change: Router1#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router1(config)#snmp-server enable traps hsrp Router1(config)#snmp-server host 172.25.1.1 ORATRAP Router1(config)#end Router1# Usually when a router changes its HSRP state, this indicates that some ..
Static VLANs offer port-based membership, in which switch ports are assigned to specific VLANs. End-user devices become members in a VLAN based on the physical switch port to which they are connected. No handshaking or unique VLAN membership protocol is needed for the end devices; they automatically assume VLAN connectivity when they connect to a port. Normally, the end device is not even aware that the VLAN exists. The switch port and its VLAN simply are viewed and use..
