Patent ID: 7839784

Claim:
A method comprising the steps of: inserting by a sending node of a network a virtual circuit connectivity verification packet into aggregated traffic of m packets transmitted over multiple pseudowires in a network path; replying from a receiving node of said network to the transmitted m packets with said virtual circuit connectivity verification packet with a packet loss indication when at least one packet loss is detected in an m packet group; and adjusting a rate of transmitting the aggregated m packets responsive to the packet loss indication, said adjusting the rate comprising rate adjustment of variable bit rate pseudowires until consecutive virtual circuit connectivity verifications without a packet loss indication occur and comprising adjustment in accordance with R i ⁡ ( n + 1 ) = T i ⁡ ( n - 1 ) × R i ⁡ ( n ) + D i ⁡ ( n ) T i ⁡ ( n ) + L , where T i (n) is round trip time (RTT) of the variable bit rate pseudowire VBR PW i in interval n; R i (n) is rate of VBR PW i in interval n; D i (n) is the number of successfully received packets of VBR PW i in interval n; L is the virtual circuit connectivity verification VCCV insertion interval.