Click the exhibit button below.
Based on the configuration of the network policy (below), what will be the forwarding class associated with a MPLS encapsulated customer packet that arrives on a dotlQ encapsulated network port 1/1/4:1 on P1 with the following characteristics:
EXP value = 6 -
DSCP value = cs1 -
Dot1pvalue = 3 -
The forwarding class associated with an MPLS encapsulated customer packet with an EXP value of 6, DSCP value of cs1, and Dot1p value of 3 is H2. According to the network policy configuration, MPLS packets are first matched based on the EXP value. The line 'lsp-exp 6 fc h1 profile in' shows that an MPLS packet with an EXP value of 6 will be classified with the forwarding class H1. However, Dot1p values are also considered, and 'dot1p 3 fc h2 profile in' indicates that Dot1p 3 corresponds to forwarding class H2. Given that Dot1p bits are considered after EXP bits, the final classification will align with H2 as indicated by the network configuration.
Classification order is based on: 1. EXP bits (MPLS packets) | DSCP (IP packets – normal or GRE) 2. Dot1p bits (dot1q network ports) 3. Default settings So i think B.H1 is best choice.