router: 12410(BJ)<--------->12406(SH)link: 2.5G (SIP 501 + OC48 SPA)from 12410(BJ) 2.5G port PING 12406(SH) 2.5 port, 1000 packets, average time is 183msfrom 12406(SH) 2.5G port PING 12410(BJ) 2.5 port, 1000 packets, average time is 29msfrom 12410(BJ...