HP Comware 5 Debug Manual Vol 2

•
Tunnel authentication is not enabled on the two devices.
<Sysname> debugging l2tp payload
*0.1258360 lac L2TP/7/L2TDBG: L2TP::Tunnel 1 send control (SendUp & RcvLow):Ns(5) Nr(3)
// Tunnel 1 sent a control packet.
*0.1258360 lac L2TP/7/L2TDBG: L2TP::Tunnel 1 first ctrl in send window, start ack timer
// The output above shows the first control packet of Tunnel 1 in the send window. L2TP started the ACK
timer.
*0.1258375 lac L2TP/7/L2TDBG: L2TP::Recv data Len = 12
*0.1258563 lac L2TP/7/L2TDBG: L2TP::Recv data Len = 12
// L2TP received data with the length of 12 bytes.
*0.1266156 lac L2TP/7/L2TDBG: L2TP::Tunnel 1 send control (SendUp & RcvLow):Ns(0) Nr(0)
// The output above shows the flow control packet in Tunnel 1 from the peer.
*0.1266156 lac L2TP/7/L2TDBG: L2TP::Tunnel 1 first ctrl in send window, start ack timer
*0.1266156 lac L2TP/7/L2TDBG: L2TP::Recv data Len = 117
// L2TP received data with the length of 117 bytes.
*0.1266156 lac L2TP/7/L2TDBG: L2TP::Tunnel 1 Flow ctrl: Ns(0) Nr(1) from peer
// The output above shows the flow control packet in Tunnel 1 from the peer.
*0.1266156 lac L2TP/7/L2TDBG: L2TP::Tunnel 1 (SendLow=0 SendUp=1) proc ack Nr=1 from peer
// Tunnel 1 processed ACK packets from the peer with the Ns 1.
*0.1266156 lac L2TP/7/L2TDBG: L2TP::Tunnel 1 recv a proper:Nr(1) and clear
// Tunnel 1 received a proper packet with the Ns 1, and cleared its response packet from the buffer.
*0.1266156 lac L2TP/7/L2TDBG: L2TP::Tunnel 1 send window empty, turn off the ack timer
// The send window of Tunnel 1 is empty. L2TP turned off the ACK timer.
*0.1266156 lac L2TP/7/L2TDBG: L2TP::Tunnel 1 send control (SendUp & RcvLow):Ns(1) Nr(1)
// Tunnel 1 sent a control packet, with the Ns number 1 and Nr number 1.
*0.1266672 lac L2TP/7/L2TDBG: L2TP::Recv data from sock CallID=6003 TunnelID=1
// L2TP received data from Socket with CallID 6003 and TunnelID 1.
*0.1266672 lac L2TP/7/L2TDBG: L2TP::Call 6003 Proc Peer Data in State 9
// The call 6003 processed peer data in state 9.
*0.1266672 lac L2TP/7/L2TDBG: L2TP::Call 6003 recv a payload NO sequence set, send to upper
// The call 6003 received a payload with no sequence number and sends it to upper applications.
*0.1266672 lac L2TP/7/L2TDBG: L2TP:: I LAC Call 6003 rcv peer packet
// The LAC call 6003 received packets from the peer.
*0.1266688 lac L2TP/7/L2TDBG: L2TP::Proc Peer Data result 0
// The result of peer data processing is 0.
*0.1266688 lac L2TP/7/L2TDBG: L2TP::Recv data Len = 20
*0.1266688 lac L2TP/7/L2TDBG: L2TP::Recv data from sock CallID=6003 TunnelID=1 *0.1266688
lac L2TP/7/L2TDBG: L2TP::Call 6003 Proc Peer Data in State 9
*0.1266688 lac L2TP/7/L2TDBG: L2TP::Call 6003 recv a payload NO sequence set, send to upper
304