Mirror sources and destinations have the following characteristics.
Sources and destinations can be on the same router (local) or on two different routers (remote).
Mirror destinations can terminate on egress virtual ports, which allows multiple mirror destinations to send to the same packet decoding device, delimited by IEEE 802.1Q (referred to as dot1q) tags. This is helpful when troubleshooting a multi-port issue within the network.
When multiple mirror destinations terminate on the same egress port, the individual dot1q tags can provide a DTE/DCE separation between the mirror sources.
Packets ingressing a port can have a mirror destination separate from packets egressing the same port or a different port (the ports can be on separate nodes).
Multiple mirror destinations are supported (local and/or remote) on a single node.
The operational state of a mirror destination depends on the state of all the outputs of the mirror. The mirror destination will go operationally down if all the outputs are down (for example, all mirror-dest>sap and mirror-dest>spoke-sdp objects are down. The state of a mirror destination does not depend on inputs such as SDPs configured under mirror-dest>remote-source or debug>mirror-source entries.