Category: CCNA Study Guide

Command Privilege Use Sets the privilege level you run at upon logging in through vty port. Syntax Router(config-line)#privilege level <0-15> Example In this example, privilege level 15 is used to set the vty privilege to enable mode upon login. R2#conf t Enter configuration commands, one per line. End with CNTL/Z. …

Command Neighbor Use This command tells EIGRP to communicate with unicast updates to a specific neighbor. Syntax Router(config-router)#neighbor <ip address> <interface> Example In this example, we will configure R4 to send its updates to R3 using unicast. Looking at the debug output for ip packets, we see that updates …

Command Offset-List Use This command allows you to modify the metric of a route on the routing table. Syntax Router(config-router)#offset-list <list> <in or out> <offset> <interface> Options <list> – 0 All networks <list> – 1-99,1300-1999 Standard access list <list> – Name Named access list <in> Affects inbound updates …

Command Passive-Interface Default Use This command prevents EIGRP from forming adjacencies on specified interfaces on the router. Using no passive-interface default will allow EIGRP communication. Syntax Router(config-router)#passive-interface <interface> Example In this example, we will use passive-interface default to block all EIGRP adjacencies. Then we will allow communication through R2’s Fa0/0 R2(config)#do show …

Command Distance Use This command allows your to change the administrative distance for select EIGRP routes. Syntax Router(config-router)#distance <AD> <source IP> <wildcard mask> <access-list> Options <Administrative Distance> Sets the administrative distance for the selected routes <source IP> Source IP the route is received from <wildcard mask> Specifies a …

Command Maximum-Paths Use Controls how many equal cost paths EIGRP will loadbalance with. EIGRP can now support up to 16 paths if desired. Syntax Router(config-router)#maximum-path <1-16> Example In this example we will change the number of EIGRP maximum paths to 6. R1(config)#router eigrp 100 R1(config-router)# maximum-paths 6

Command Variance (EIGRP) Use Allows EIGRP to install unequal load balancing to the routing table. Syntax Router(config-router)#variance Example In this example, we will configure R4 to utilize both links to reach R5’s loopback networks. Currently we have a basic EIGRP setup for this example R4 router eigrp 222 …

Command EIGRP Router-ID Use This command manually sets the router-id for EIGRP. This is used just for administrative purposes and doesn’t affect EIGRP’s operation, since EIGRP keeps track of neighbors by their IP addresses. Syntax Router(config-router)#eigrp router-id <ID> Example In this example, we will change EIGRP’s router-id on …

Command Network Use Specifies which interfaces will participate in the EIGRP process. Syntax Router(config-router)#network <ip address> OR Router(config-router)#network <ip address> <wildcard> Example In this example, we will configure EIGRP 100 on all routers in the topology. R1(config)#router eigrp 100 R1(config-router)#no auto R1(config-router)#network 10.4.4.4 R1(config-router)#network 1.1.1.1 R1(config-router)#do sh run | …

Command Distance EIGRP Use This command changes the administrative distance for EIGRP routes. Syntax Router(config-router)#distance eigrp <internal distance> <external distance> Example In this example, we will change the EIGRP administrative distance to 110. Currently, we see EIGRP is at its default administrative distance of 90. R1(config)#do show ip route eigrp …