DNS server changes - challange

Any one ever respond, or did you figure out how to script this?

Any one ever respond, or did you figure out how to script this?

This can't be done simply in NCM.  I would do this in Expect as a first timer.

Here would be how (this is depending on the fact there is only ONE dhcp scope configured and that you want the first IP listed):

#!/usr/bin/expect

#set variables that are called by prefixing dollar signs

set pass "password"

set deviceList {hostnames or ips seperated by spaces}

foreach host [split $deviceList] {

     spawn ssh $host

     expect "word:"

     send "$pass\r"

     expect "#"

     send "show run | i dns-server\r"

     expect "#"

     set firstIP "blank"

     regexp {([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})} $expect_out(buffer) firstIP

     if {$firstIP != "blank"} {

          send "config t\r"

          expect ")#"

          send "ip dhcp pool DHCPPOOL1\r"

          expect ")#"

          send "no dns-server\r"

          expect ")#"

          send "dns-server $firstIP\r"

          expect ")#"

          send "end\r"

          expect "#"

          send "wr\r"

          expect "#"

          puts "$host Successfully updated DHCP scope"

     } else {

          puts "$host Failed to parse IP"

     }

     send "exit\r"

}