Mirror destinations have the following characteristics:
Mirror destinations can terminate on egress virtual ports which allows multiple mirror destinations to send to the same packet decode 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 another or the same port (the ports can be on separate nodes).
Multiple mirror destinations are supported (local or remote) on a single chassis.
The operational state of a mirror destination depends on the state of all the outputs of the mirror. The mirror destination goes operationally down if all the outputs are down (for example, all mirror-dest>sap and mirror-dest>spoke-sdp objects are down, and all gateways configured under mirror-dest>encap do not have a known route by which they can be reached). The state of a mirror destination does not depend on inputs such as SDPs configured under mirror-dest>remote-source, debug>mirror-source entries, or configure>li>li-source entries. Some examples of outputs include mirror-dest>sap and mirror-dest>spoke-sdp.
configure>mirror-source and li>li-source can re-use the mirror-destination service that is currently in use by a debug>mirror-source. In this scenario, the system automatically cleans up the debug>mirror-source entries before it can be re-used. From Release 19.10.R1 onward, config and LI must reference different mirror destinations.
In classic CLI mode, mirror destination supports the following mirror-type values:
ether
ppp
ip-only
satop-e1
cesopsn
cesopsn-cas
In mixed and MD-CLI mode, only the following mirror-type values are supported: ether and ip-only.
To switch from classic to mixed or MD-CLI mode, all mirror types other than ether and ip-only must be manually removed first.
The following mirror destinations are supported: