Delay for getting the login prompt.

[sudhapage]

Hi All,

Recently I changed the IP address of 4 servers, now that 4 servers are VLAN.

Now each servers are pinging & connecting each other, but the problem is...


If we connect through telnet/ssh initially its taking 30/40 seconds to display the login prompt... But after that everything is fine..

Please help me to troubleshoot this issue.

NOTE: I changed the IP address through ifconfig & I edited the netconf file and updated the new IP.

[Jeeshan]

Hi

Are u using wireless to connect those servers?

[sudhapage]

No, we are not using wireless.

[Hutch Mumbai]

Check the DNS level resolution. Can be tested with logging to server with name an then IP. If with IP is faster, resolution using DNS is slow.

[Sajjad Sahir]

can u check nslookup and u target ip
i mean nslookup targetip
then check it dns is there and it is succeeding or failing
and reply it soon

[Sajjad Sahir]

if it is failing wiht ip check it wiht hostname
ok
revert back

[Sajjad Sahir]

I suspect u dns is failed
if u can revert back soon i can reply it soon

[Sajjad Sahir]

use netstat -a and linklook command also
send that output also

[sudhapage]

We are using IP address for connecting through telnet... but initially its slow only.

[Sajjad Sahir]

yes i know

[Tim Nelson]

99.999% of the time slow prompts or logins are DNS issues. Did you update DNS ? Do you still have access from the servers to DNS?

[Sajjad Sahir]

Dear Sudha
i know initiall it is slow
but what i am said befor at my previous thread may be near to 100 percent dns issue
u have to reset it.
Once u problem solved u have to assign points to the peoples

[whiteknight]

hi,

may I know if it is 11.23 OS?

1) check /etc/resolv.conf
2) check /etc/hosts
3) check /etc/nsswitch.conf


WK

[OldSchool]

as Tim noted, this is almost certainly a name resolution issue.

try running "nslookup" with the IP and name.

also, is the ssh connection from your desktop to the server, or are you talking server to server connection?