IBM 6 MPLS - Manual (Page 4)

Specialized Models User Guide 6 MPLS Model User Guide
SPM-6-4 Modeler/Release 10.0
Figure 6-2 Specifying FEC Attributes
The FEC Details Table helps define the FEC through a set of match rules,
which are combinations of TCP, UDP, and IP header fields. FECs are
determined by taking a logical AND of the column settings in a row and by
taking a logical OR of each of the rows. In other words, for a packet to qualify
for a particular FEC, the IP header fields must satisfy every condition of at
least one row of the defined FEC. For example, a FEC that consists only of
email and ftp traffic would be specified as shown in
Figure 6-3 .
Figure 6-3 FEC Details for E-mail and FTP Traffic
Therefore, if the IP header of a packet contained either email or FTP, it would
qualify for the FEC defined in
Figure 6-3 , and would be sent over the
corresponding LSP.