pppoe server

Hi

I have a problem with pppoe server , when i ping the server i have a big times over ethernet 15 , 25 ms , same problems

pppoe server
eth1 192.168.1.1

pppoe client =192.168.1.2

c:>/ping 192.168.1.1

Reply from 192.168.1.1 … time 25ms , 30ms , 19,

server<-------------->client

can you help me ?