300-610 dcid book

300-610 dcid book

Purpose Learn how to apply basic security settings to a Cisco switch. R1(config-if)#ip add 172.16.1.1 255.255.0.0 R1(config-if)#no shut Summarization reduces the amount of information that routers must process, which allows for faster convergence within the network. Summarisation also restricts the size of the area that is affected by network changes by hiding detailed topology information from certain areas within the network. This concept is illustrated in Figure 10.9 below: i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area, Verifying all the routing protocols that advertise that specific prefix (including static routing) I1 - ISIS L1, I2 - ISIS L2, IA - ISIS inter area, IS - ISIS summary (P) Repeater,300-610 dcid book, (S) Station, (O) Other In order for the ip route 0.0.0.0 0.0.0.0 command to work, IP routing must be enabled on the router. Here is an example of configuring a gateway of last resort using the ip route 0.0.0.0 0.0.0.0 command: allocated to a particular VLAN Fa0/4 7-12 Other issues outside the CCNA syllabus include authentication mistakes and route filtering. You could be asked about split horizon (covered earlier), exceeding the maximum hop count, or a firewall blocking RIP traffic. Also, bear in mind that ACLs filter all traffic not specifically permitted. We cover permitting RIP via an ACL entry in the ACL section. When using multiple physical router interfaces, each switch link connected to the router is configured as an access link in the desired VLAN. The physical interfaces on the router are then configured with the appropriate IP addresses, and the network hosts are either statically configured with IP addresses in the appropriate VLAN, using the physical router interface as the default gateway, or dynamically configured using DHCP. The configuration of the switch illustrated in Figure 10.