Filter
Top Products
104
C
HAPTER
7: Q
UALITY
OF
S
ERVICE
(Q
O
S)
The command to clear the FDB is as follows:
clear fdb
Blackhole
Using the
blackhole
option configures the switch to not forward any
packets to the destination MAC address on any ports for the VLAN
specified.
The
blackhole
option is configured using the following command:
create fdbentry 00:11:22:33:44:55 vlan default blackhole
Broadcast/Unknown Rate Limiting
It is possible to assign broadcast and unknown destination packets to a
QoS profile that has the desired priority and bandwidth parameters.
Broadcast/unknown rate limiting is an extension of the QoS feature used
for destination MAC addresses.
For example, if you want to limit broadcast and unknown traffic on the
VLAN
default
to the bandwidth and priority defined in QoS profile
qp3
,
the command is:
create fdbentry ff:ff:ff:ff:ff:ff vlan default dynamic qp3
Verifying MAC-Based QoS Settings
To verify any of the MAC-based QoS settings, use either the command
show fdb perm
or the command
show qosprofile <qosname>
Packet Groupings
This category of traffic groupings consists of prioritization bits used in
IEEE 802.1p packets.