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Command Manual – MPLS Basics
H3C S9500 Series Routing Switches
Chapter 1 MPLS Basics Configuration Commands
1-6
*0.19215421 PE1 LDP/8/Session: Vlan-interface 12
Sent keep alive message to LSR: 140.2.2.2.
// Send a Keepalive message.
*0.19215421 PE1 LDP/8/Session: Vlan-interface 12
Session(140.2.2.2)'s state changed from Initialised to Open received.
// The session’s state is changed.
#Dec 22 15:32:43:437 2005 PE1 LDP/5/SessionUp: Session(140.2.2.2:0. public
Instance)'s state change to Up
// Display a Session-UP Trap message.
*0.19215437 PE1 LDP/8/Session: Vlan-interface 12
Session(140.2.2.2) received keep alive message on Open Received state.
// Receive a Keepalive message.
*0.19215437 PE1 LDP/8/Session: Vlan-interface 12
Session(140.2.2.2)'s state changed from Open received to operational.
// The session’s state is changed to Operational.
*0.19215437 PE1 LDP/8/Session:
Address message sent to LSR: 140.2.2.2
// Send an address message to the opposite end.
*0.19215437 PE1 LDP/8/Session:
Informed Session Up event to L2VPN
// Inform L2VPN of Session UP.
*0.19215437 PE1 LDP/8/Session: Vlan-interface 12
Session(140.2.2.2) received address message on Operational state.
// Receive an address message.
*0.19216438 PE1 LDP/8/Session:
Session(140.3.3.3) received keep alive message on Operational state.
// Receive a Keepalive message.
# Enable PDU packet event debugging by executing the
debugging mpls
ldp pdu
command.
Start two switches, connect the two switches, and configure MPLS and MPLS LDP for
them to establish a session between them. Execute the
debugging mpls
ldp pdu
command on one switch.
<PE1>debugging mpls ldp pdu
<PE1>
*0.19804957 PE1 LDP/8/PDU:
Receive UDP Message from Peer: 140.3.3.3. Message content:
01 00 00 1c 00 00 17 bf 04 00 00 04 00 2d c0 00