No Int with this interface although ping/telnet gives successful

CCIE_2011CCIE_2011 Member Posts: 134
in CCNP
Post title Correction

"No Int with this IP although ping/telnet gives successful"


Hi all ....
I am a bit confused here. I'm ping the ip X.X.X.X and get a successful results. I issue a telnet to IP X.X.X.X it logs me into a switch A.

However, When i issue the command
"show ip interface brief"
I don't see any interface assigned with IP X.X.X.X

Can this really happen ????
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  • tech-airmantech-airman Member Posts: 953
    CCIE_2011 wrote: »
    Post title Correction

    "No Int with this IP although ping/telnet gives successful"


    Hi all ....
    I am a bit confused here. I'm ping the ip X.X.X.X and get a successful results. I issue a telnet to IP X.X.X.X it logs me into a switch A.

    However, When i issue the command
    "show ip interface brief"
    I don't see any interface assigned with IP X.X.X.X

    Can this really happen ????

    CCIE_2011,

    When you mention "...ping the ip X.X.X.X..." what kind of networking device are you pinging from?
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  • CCIE_2011CCIE_2011 Member Posts: 134
    I'm pinging the same switch "A" that i telnet later.
    the command is also issue switch "A"

    extra info, switch A is 6500 with sup720 engine
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  • jason_lundejason_lunde Member Posts: 567
    you probably have a redundancy protocol running with virtual ip's; like hsrp, vrrp, glbp (which wont show up in your ip int brief command).

    Try the
    show run | i [ip address]

    see if you get anything.
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  • networker050184networker050184 Mod Posts: 11,962 Mod
    jason_lunde wrote: »
    you probably have a redundancy protocol running with virtual ip's; like hsrp, vrrp, glbp (which wont show up in your ip int brief command).

    Try the
    show run | i [ip address]

    see if you get anything.

    Thats what I was thinking as well. You could also do a sho ip route for that ip and it will show what interface it is connected to.
    An expert is a man who has made all the mistakes which can be made.
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  • CCIE_2011CCIE_2011 Member Posts: 134
    hmmmm maybe... i didn't check that.

    I'll look it up tomorrow
    . : | : . : | : .
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  • tech-airmantech-airman Member Posts: 953
    CCIE_2011 wrote: »
    I'm pinging the same switch "A" that i telnet later.
    the command is also issue switch "A"

    extra info, switch A is 6500 with sup720 engine

    CCIE_2011,

    I didn't ask what your ping destination was, I'm asking what networking device was the SOURCE for the ping command.
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  • CCIE_2011CCIE_2011 Member Posts: 134
    the source device is a 6500 switch.

    I found it. it is the HSRP interface.

    thanks for help ppl
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