Virtual LAN Commands
10-2
Virtual Broadcast Domains (VBC)
Virtual Broadcast Domains are port-oriented VLANs that allow
broadcast Ethernet addresses to be broadcasted (transmitted) to the
assigned ports in that VBC. The VBCs do not require a SVLAN to be
configured to allow packet switching between assigned ports in a
VBC. Broadcast packets (destination address of FF FF FF FF FF FF)
remain within the VBC where they are received and are transmitted
to only the ports in a SVLAN that are members of the receiving VBC
port.
A VBC VLAN can be built from any combination of ports. However,
ports in a VLAN cannot overlap. If you assign the same port to
multiple VLANs, they become one VLAN which contains all of the
original VLAN ports. You can view VLAN settings by using the CLI
“
get-con-matrix
” command which shows the connectivity
matrix of all the ports (identifies the ports sending frames to other
ports).
get-con-matrix
Retrieves the current connectivity matrix for the switch. The first
column is the source port. The other columns are destinations to
which frames from a given source port (determined by which row)
may be forwarded. Unlearned addresses will be forwarded to all
destinations marked with a + in the source port’s row. Learned
addresses will be forwarded to their destinations only if the
destination is marked with a “+” in the source port’s row. Note that
the switch has a default VBC that contains all the ports in the switch
that are not assigned to a VBC VLAN. The following example shows
that Ports 1-4 are in VLAN #1; the remaining ports are in the default
VLAN. Also see the example for
get-vbc-tbl run
.
set-mon-port
sets the monitoring port
stop-mon
stops port monitoring
monitor
starts port monitoring
get-nv-mon
retrieves the NVRAM based monitoring configuration
save-mon
saves the running monitoring configuration to NVRAM
clear-nv-mon
clears the NVRAM based monitoring configuration
