Extreme Networks ExtremeWare 7.2e, Инструкция по установке и эксплуатации

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106 ExtremeWare 7.2e Installation and User Guide
Forwarding Database (FDB)
learned, it is created as a permanent dynamic entry, designated by “dpm” in the flags field of the
show
fdb
output.
You can display permanent FDB entries, including their QoS profile associations by using the
permanent
option in the following command:
show fdb {<mac_address> | permanent | ports <portlist> | vlan <vlan name>}
To associate a QoS profile with a permanent FDB entry, use the following command:
create fdbentry <mac_address> vlan <vlan name> ports [<portlist> | all] {qosprofile
<qosprofile>}{ingress-qosprofile <inqosprofile>}
This entry will not be aged out, and no learning will occur. If the same MAC address is encountered
through a virtual port not specified in the portlist, it will be handled as a blackhole entry.
Using the
any-mac
keyword, you can enable traffic from a QoS VLAN to have higher priority than
802.1p traffic. Normally, an 802.1p packet has a higher priority over the VLAN classification. In order to
use this feature, you must create a wildcard permanent FDB entry named
any-mac
and apply the QoS
profile to the individual MAC entry.
NOTE
For more information on QoS profiles, see Chapter 7.
FDB Configuration Examples
The following example adds a permanent static entry to the FDB:
create fdbentry 00:E0:2B:12:34:56 vlan marketing port 3:4
The permanent entry has the following characteristics:
• MAC address is 00:E0:2B:12:34:56.
•
VLAN name is marketing.
• Slot number for this device is 3.
• Port number for this device is 4.
If the MAC address 00:E0:2B:12:34:56 is encountered on any port/VLAN other than VLAN marketing,
port 3:4, it will be handled as a blackhole entry, and packets from that source will be dropped.
This example associates the QoS profile qp2 with a dynamic entry for the device at MAC address
00:A0:23:12:34:56 on VLAN net34 that will be learned by the FDB:
create fdbentry 00:A0:23:12:34:56 vlan net34 dynamic qosprofile qp2
This entry has the following characteristics:
• MAC address is 00:A0:23:12:34:56.
• VLAN name is net34.
• The entry will be learned dynamically.
• QoS profile qp2 will be applied as an egress QoS profile when the entry is learned.