Specifications

Installation and Operation Manual Chapter 3 Configuration
MPW-1 MP-4100 Ver. 2.0 Configuring Pseudowire Services 3-23
Parameter Function Values
Out PW Label For UDP/IP:
Specifies the UDP source port
number used by the pseudowire.
For MPLS/ETH:
Specifies the outer (tunnel) MPLS
label used by the pseudowire
The allowed range is 1 to 8063
Default: Same as the pseudowire index number
The allowed range is 16 to 1048575.
Default: Pseudowire index number + 15
In PW Label For UDP/IP:
Specifies the UDP destination port
number used by the pseudowire.
For MPLS/ETH:
Specifies the inbound MPLS label
used by the pseudowire
The allowed range is 1 to 8063
Default: Same as the pseudowire index number
The allowed range is 16 to 1048575.
Default: Pseudowire index number + 15
Configuring Pseudowire PSN Parameters
The pseudowire PSN parameters is used to configure the parameters that are
used by the PSN to handle pseudowire traffic.
Some of the parameters depend on the PSN selection made as part of the
pseudowire general parameters (see
Table 3-8 ). In particular, for UDP/IP
networks, the pseudowire label determines the source UDP port of a pseudowire.
The method used to assign the source UDP port is as follows (unless explicitly
stated otherwise, all the numbers are in hexadecimal notation):
• For TDMoIP CE pseudowires using packet payload Version V1:
During normal operation, the source UDP port is given by:
UDP Source Port = Pseudowire Label + 1
This means that during normal operation, the UDP ports numbers are in the
range of 0 to 8191 decimal.
While the pseudowire is in the local fail state, the source UDP port changes
to:
UDP Source Port = Pseudowire Label + 8000
This means that in the local fail state, the UDP ports numbers are higher than
8000 hexa (32768 decimal).
• For TDMoIP CE pseudowires using packet payload Version V2:
UDP Source Port = Pseudowire Label + 2000
This means that for TDMoIP CE pseudowires, all the UDP ports numbers are
higher than 2000 hexa (8192 decimal). This also applies to HDLCoPSN.
As you may note, when you send to the same peer (destination IP address)
packets using both payload Version V1 and payload Version V2, there is a
potential for conflict. For example:
 When you assign a certain label (for example, Out PW Label is set to 100)
to a pseudowire using payload Version V1, the source UDP port is 101