Now it is time to get some housekeeping done on these routers. We will configure the interfaces on each of them. Once that is complete, we will create a Rescue configuration. A rescue configuration is a known working configuration that we can roll back to at any time. We will use this rescue config to reset the routers to a base state before each lab. Here is our Lab Topology:
First up though, we need to get R4 (The Cisco router) configured and setup.
For R4 we need to configure E0 with an IP of 192.168.14.4/24 and the loopback with 4..4.4.4/32. Once we have it configured, we will save the config to FLASH as base.txt so we can reload it later on.
Router (config)#interface Loopback0
Router (config-if)# ip address 126.96.36.199 255.255.255.255
Router (config)#interface Ethernet0
Router (config-if)# ip address 192.168.14.4 255.255.255.0
Router (config-if)#no shut
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