Users Guide

Table Of Contents
Monitoring Switch Traffic 661
The ERSPAN feature does not support packet fragmentation. The
do not
fragment
bit is set in the IP header of ERSPAN packets.
ERSPAN cannot quite operate at the wire-speed due to the additional
packet overhead.
Because there is no standard, the interop is not guaranteed.
As the packets are encapsulated, applying MAC ACL filters to ERSPAN
sessions cannot be supported.
The ERSPAN feature currently does not support configuring VLAN as
source for mirroring the traffic.