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  1. #1
    Join Date
    Apr 2010
    Posts
    19

    Default Router's IP Address

    Hi guys!

    I'm trying to do the hands-on Labs from chapter 5 and I have been having problems with some exercises.
    Lab 5.6, for instance, ask me to set the host table for routers b and c addresses.Never theless, I do not know how to get the ip address of a router. I mean I do not know where I can found the ip address used to access a router. I just can find the ip addresses of interfaces through sh ip interfaces or sh running-config commands

    Can somebody help me?

  2. #2
    Join Date
    Aug 2009
    Location
    California, US
    Posts
    115

    Default

    yes. you can also use cdp to find the ip address of neighbors

  3. #3
    Join Date
    Mar 2008
    Posts
    2,888

    Default

    Quote Originally Posted by jefss1 View Post
    Hi guys!
    I just can find the ip addresses of interfaces through sh ip interfaces or sh running-config commands
    Yes, whatever you have set these up as use in the cmd

    Code:
    ip host [name] [ip address]
    This is only done so you have a name to resolve an ip address.

    As mentioned you can see the IP of you neighbor with

    Code:
    sh cdp nei detail
    Maddox Thomas-Clark 14/10/2008
    Bean Thomas-Clark 18/09/2007
    Big Evils Cisco World
    Linkedin

  4. #4
    Join Date
    Apr 2010
    Posts
    19

    Default OK

    Thanks guys!

    I understood the relation between interfaces, cdp neighbors,etc.

    It has not been clear for me yet which ip address must be used when I want to telnet to a router.

    Lets suppose I defined the following interface in router A towards router B:

    Router#config t
    Router(config)#int fa0/0
    Router(config-if)#ip address 172.16.10.2 255.255.255.0
    Router(config-if)#no shut

    Then I want to telnet to Router B in order to perform the same configuration. Should I use the ip address 172.16.10.2?

    The command would be: telnet 172.16.10.2 ?????

    I mean, the ip address used for interface and telnet are the same??

    Thanks in advance!!!

  5. #5
    Join Date
    May 2010
    Posts
    15

    Default

    yes you can use any interface to telnet into the router just be sure set the password
    (config)#line vty 0
    password **********
    login
    you set the password and login to all of the router

    and then use any ip address set to any interface no matter

  6. #6
    Join Date
    Mar 2008
    Posts
    2,888

    Default

    It is good practice to use password certainly in production network, however SSH is prefered in the big wide world.
    In my home lab i don't set passwords, tell the router to allow Telnet connections without a password by using the no login command

    Code:
     
    Router(config-line)#line vty 0 4
    Router(config-line)#no login
    Maddox Thomas-Clark 14/10/2008
    Bean Thomas-Clark 18/09/2007
    Big Evils Cisco World
    Linkedin

  7. #7
    Join Date
    May 2010
    Posts
    15

    Default

    thank you big evil

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