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Command Distribute-List Use Allows you to filter routes from the routing table. For CCNA purposes, this is usually done through access lists. Syntax Router(config-router)#distribute-list <list> <in/out> OR Router(config-router)#distribute-list <list> <in/out> <interface> Options <list> Access list <in/out> Whether the router is receiving or sending the route Example In this …
Command Router-Id Use This command manually sets the router-id used by OSPF. If it is not set, OSPF will automatically set its router-id to be the highest loopback IP address or the highest IP address (if no loopback interfaces are present). One thing to note is, even though …
Command Distance Use Allows you to filter routes from the routing table. For CCNA purposes, this is usually done through access lists. 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 …
Command Maximum-Paths Use Controls how many equal cost paths OSPF will loadbalance with. Syntax Router(config-router)#maximum-path <1-16> Example In this example we will change the number of OSPF maximum paths to 6. CopyR1(config)#router OSPF 1 R1(config-router)# maximum-paths 6
Command Passive-Interface Use This command prevents OSPF from forming adjacencies on specified interfaces on the router. Using no passive-interface is used to allow all OSPF communication. Syntax Router(config-router)#passive-interface <interface> Example In this example, we will use passive-interface default to block all OSPF adjacencies. After that, we will allow communication through R2’s Fa0/0. …
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. CopyR2#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 CopyR2(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 …
