Owner's Manual

Chapter 5. Configuring Slots and Ports on a Switch | 143
NETGEAR 8800 User Manual
The show mirroring output displays the remote tag when remote mirroring is configured.
In NETGEAR 8800 series switches, remote mirroring can also be enabled to a single port,
without the port-list and loopback-port keywords. For instance, to enable remote mirroring to
port 25, you can use the following command:
enable mirroring to port 25 remote-tag 1000
Configuration on Intermediate Switch
When you enable mirroring with remote-tag 1000, you need to reserve a VLAN with tag 1000
in all the intermediate switches for remote mirroring. The remote mirroring VLAN in the
intermediate switches is used for carrying the mirroring traffic to the destination switch. The
ports connecting the source and destination switches are added as tagged in the
intermediate switches.
You may add the remote-mirroring keyword when you configure the tag to differentiate a
normal VLAN from the remote mirroring VLAN.
create vlan remote_vlan
configure vlan remote_vlan tag 1000 remote-mirroring
configure vlan remote_vlan add ports 1,2 tagged
Using the remote-mirroring keyword automatically disables learning and IGMP snooping on
the VLAN.
Another way to configure a remote mirroring VLAN is to create a normal VLAN and disable
learning on the VLAN. IGMP snooping must be disabled on that VLAN for you to remotely
mirror multicast packets through the switch.
You may use the following configuration for creating the remote mirroring VLAN:
create vlan remote_vlan
configure vlan remote_vlan tag 1000
disable learning vlan remote_vlan
disable igmp snooping remote_vlan
Configuration on Destination Switch
The configuration on the destination switch is same as that of the intermediate switches,
except that the port connected to the network analyzer is added as untagged whereas all the
other ports connected to the switches are added as tagged.
create vlan remote_vlan
configure vlan remote_vlan tag 1000 remote-mirroring
configure vlan remote_vlan add ports 1 tagged
configure vlan remote_vlan add ports 2 untagged
For a remote mirroring VLAN, the configured tag displayed by the show vlan output is remote
tag
instead of the normal tag.