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Configuring Quality of Service
December 2005
© Foundry Networks, Inc.
13 - 7
Assigning QoS Priorities to Traffic
By default, all traffic is in the best-effort queue (qosp0) and is honored on tagged ports on all FastIron family of
switches. You can assign traffic to a higher queue based on the following:
•
Incoming port (sometimes called the ingress port)
•
Static MAC entry
The following sections describe how to change the priority for each of the items listed above.
Although it is possible for a packet to qualify for an adjusted QoS priority based on more than one of the criteria
listed In the section above, the system always gives a packet the highest priority for which it qualifies. Thus, if a
packet is entitled to the premium queue because of its IP source and destination addresses, but is entitled only to
the high queue because of its incoming port, the system places the packet in the premium queue on the outgoing
port.
When you apply a QoS priority to one of the items listed above, you specify a number from 0 – 7. The priority
number specifies the IEEE 802.1 equivalent to one of the eight QoS queues on FESX, FSX, and FWSX devices.
The numbers correspond to the queues as shown in Table 13.2.
Changing a Port’s Priority
To change the QoS priority of port 1 to the premium queue (qosp7), enter the following commands:
FESX424 Router(config)# interface ethernet 1
FESX424 Router(config-if-e1000-1)# priority 7
The device will assign priority 7 to untagged switched traffic received on port 1.
Syntax:
[no] priority <num>
The <num> parameter can be from 0 – 7 and specifies the IEEE 802.1 equivalent to one of eight QoS queues
listed in Table 13.2.
Assigning Static MAC Entries to Priority Queues
By default, all MAC entries are in the best effort queue. When you configure a static MAC entry, you can assign
the entry to a higher QoS level.
To configure a static MAC entry and assign the entry to the premium queue, enter commands such as the
following:
FESX424 Router(config)# vlan 9
FESX424 Router(config-vlan-9)# static-mac-address 1145.1163.67FF ethernet 1/1
priority 7
FESX424 Router(config-vlan-9)# write memory
Syntax:
[no] static-mac-address <mac-addr> ethernet [<slotnum>/]<portnum> [priority <num>]
[host-type | router-type | fixed-host]
The <slotnum>/ parameter applies to the FSX only.
The
priority
<num> parameter can be from 0 – 7 and specifies the IEEE 802.1 equivalent to one of the eight QoS
queues.
NOTE:
The location of the
static-mac-address
command in the CLI depends on whether you configure port-
based VLANs on the device. If the device does not have more than one port-based VLAN (VLAN 1, which is the
default VLAN that contains all the ports), the
static-mac-address
command is at the global CONFIG level of the
CLI. If the device has more than one port-based VLAN, then the
static-mac-address
command is not available at
the global CONFIG level. In this case, the command is available at the configuration level for each port-based
VLAN.
Summary of Contents for FastIron Edge Switch X424
Page 36: ...Foundry Configuration Guide for the FESX FSX and FWSX 2 12 Foundry Networks Inc December 2005...
Page 56: ...Foundry Configuration Guide for the FESX FSX and FWSX 3 20 Foundry Networks Inc December 2005...
Page 70: ...Foundry Configuration Guide for the FESX FSX and FWSX 4 14 Foundry Networks Inc December 2005...
Page 198: ...Foundry Configuration Guide for the FESX FSX and FWSX 8 38 Foundry Networks Inc December 2005...
Page 316: ...Foundry Configuration Guide for the FESX FSX and FWSX 12 26 Foundry Networks Inc December 2005...
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Page 458: ...Foundry Configuration Guide for the FESX FSX and FWSX 18 18 Foundry Networks Inc December 2005...
Page 712: ...Foundry Configuration Guide for the FESX FSX and FWSX 22 32 Foundry Networks Inc December 2005...
Page 760: ...Foundry Configuration Guide for the FESX FSX and FWSX A 34 Foundry Networks Inc December 2005...
Page 796: ...Foundry Configuration Guide for the FESX FSX and FWSX C 18 Foundry Networks Inc December 2005...
Page 820: ...Foundry Configuration Guide for the FESX FSX and FWSX E 10 Foundry Networks Inc December 2005...