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15
Monitoring
Peer IP
The IP address of the peer host that established the PPTP tunnel for this session; i.e., the tunnel endpoint
IP address. The Monitor | Sessions screen shows the IP address assigned to the client using the tunnel.
Username
The username for the session within a PPTP tunnel. This is typically the login name of the remote user.
Receive Octets
The total number of PPTP data octets (bytes) received by this session.
Receive Packets
The total number of PPTP data packets received by this session.
Receive Discards
The total number of PPTP data packets received and discarded by this session.
Receive ZLB
The total number of PPTP Zero Length Body acknowledgement data packets received by this session.
ZLB packets are sent as GRE acknowledgement packets when there is no data packet on which to
piggyback an acknowledgement.
Transmit Octets
The total number of PPTP data octets (bytes) transmitted by this session.
Transmit Packets
The total number of PPTP data packets transmitted by this session.
Transmit ZLB
The total number of PPTP Zero Length Body acknowledgement packets transmitted by this session. ZLB
packets are sent as GRE acknowledgement packets when there is no data packet on which to piggyback
an acknowledgement.
ACK Timeouts
The total number of acknowledgement timeouts seen on PPTP data packets for this session. When the
system times out waiting for a data packet on which to piggyback an acknowledgement, it sends a ZLB
instead. Therefore, this number should equal the Transmit ZLB number above.
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VPN 3000 Concentrator Series User Guide
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