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  • 1.  Question on DNS

     
    Posted 12-06-2022 23:11

    Hi.

     

    I have a DNS server configured on my vMX, however, I get 'no route to host' when I try to ping a host name, even though I can successfully ping the host's IP address. Why is my ping to host name failing?

     

    DNS CONFIGURATION:

    [edit]

    lab@vmx-1# show system name-server

    8.8.8.8;

     

    DNS IS ABLE TO RESOLVE HOST NAME GOOGLE.COM:

    [edit]

    lab@vmx-1# run show host google.com

    google.com has address 142.250.217.110

    google.com has IPv6 address 2607:f8b0:400a:80b::200e

    google.com mail is handled by 10 smtp.google.com.

     

    I AM ABLE TO PING GOOGLE.COM IP ADDRESS

    [edit]

    lab@vmx-1# run ping 142.250.217.110 count 1

    PING 142.250.217.110 (142.250.217.110): 56 data bytes

    64 bytes from 142.250.217.110: icmp_seq=0 ttl=116 time=5.515 ms

     

    --- 142.250.217.110 ping statistics ---

    1 packets transmitted, 1 packets received, 0% packet loss

    round-trip min/avg/max/stddev = 5.515/5.515/5.515/0.000 ms

     

    BUT I AM NOT ABLE TO PING GOOGLE.COM ITSELF

    [edit]

    lab@vmx-1# run ping google.com count 1        

    PING6(56=40+8+8 bytes) :: --> 2607:f8b0:400a:80b::200e

    ping: sendmsg: No route to host

    ping6: wrote google.com 16 chars, ret=-1

     

    --- google.com ping6 statistics ---

    1 packets transmitted, 0 packets received, 100% packet loss

     

     

    Thanks,

    Deepak


    Juniper Business Use Only



  • 2.  RE: Question on DNS

    Posted 12-07-2022 03:53

    v6 configured on the vmx, but no v6 default route?

    PING 142.250.217.110 (142.250.217.110): 56 data bytes

    vs     

    PING6(56=40+8+8 bytes) :: --> 2607:f8b0:400a:80b::200e




  • 3.  RE: Question on DNS

    Posted 12-07-2022 05:00
    Hi ,


    you should do like this run ping google.com inet


    Thanks