6 Replies Latest reply on Jun 16, 2013 9:20 PM by pileus

    3400 router cant ping itself

    pileus New Member

      I have two routers connected via fractional t1. The router in the diagram R2 cant ping its Ethernet port but it can ping its t1 port when I attempt to ping from the segment it expires in transit at I am seeking direction to solve. I want to eventually connect that segment to the internet.



      mii-new-ip v2 q.jpg

      ip subnet-zero

      ip classless

      ip routing


      event-history on

      no logging forwarding

      logging forwarding priority-level info

      no logging email

      ip forward-protocol udp netbios-ns

      ip forward-protocol udp netbios-dgm

      ip forward-protocol udp netbios-ss


      ip policy-timeout tcp all-ports 600

      ip policy-timeout udp all-ports 60

      ip policy-timeout icmp 60




      ip dhcp-server pool





      interface eth 0/1


        speed 10

        ip address

        ip helper-address

        no shutdown


      interface t1 1/1

        tdm-group 1 timeslots 1-24 speed 64

        no shutdown


      interface ppp 1

        ip address

        no shutdown

        cross-connect 1 t1 1/1 1 ppp 1


      ip route


      no ip snmp agent

        • Re: 3400 router cant ping itself



          Thank you for asking this question in the Support Community.  Is the configuration you posted above taken from the "R2" unit from the diagram?  If so, it appears the IP address is not configured for  It appears to be configured for "ip address"  Do you know if that is just a mistake in the configuration example above?  If the IP address is actually, another thing to keep in mind is the physical interface has to be connected and "UP." 

          Therefore, make sure you are pinging the correct IP address, and that the interface where that IP address is assigned is connected and "UP."


          I hope that makes sense, but please do not hesitate to reply to this post with any additional questions or information.  I will be happy to help in any way I can.



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