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Looking at the PingER smokeping performance graphs (the blue line is the RTT measured with 10 pings each 30 mins, the black is no response, the other background colors indicate the packet loss, the grey shading shows the jitter) for the TEIN3 hosts pinger.cdacmumbai.in
(most recent data) and sanchar.ncb.ernet.in (most recent data) there is no obvious change on the TEIN3 India cutover date (March 3) however in April the RTT dropped for pinger.cdacmumbai.in from ~ 300ms to 370ms 270ms and for sanchar.ncb.ernet.in (in Bangalore) from ~350ms to ~300ms. 
