Avaya P880, P580, P550R manual Classification of Traffic

Page 5

Classification of Traffic

You can classify traffic by:

802.1p tag priority (default)

Physical source port

IP characteristics of the frame (source address, destination address, and so forth)

Frames are classified into eight priorities, or classes, ranging in number from 0 to 7. By default, the switch uses the priority from the 802.1p tag field, if present, to assign a priority to a frame.

You can alternately set each physical port with a priority that ranges from 0 to 7. The switch then replaces the default 802.1p tag priority with the port priority as the priority of the frame.

You can, as a third alternative, set classification to be performed by the IP characteristics of packets, instead of 802.1 tag priority or port priority. To classify frames by their IP characteristics, you set a rule in an access control list (ACL). The rule can set a priority for traffic with a specific IP source address or with a specific combination of IP source address, IP destination address, IP protocol, TCP source port, and TCP destination port.

The priority of a rule in an ACL takes precedence over all other priorities in Queue Classification and Servicing classification. Because of this precedence, the switch determines whether a rule in an ACL exists for an IP frame in the final stage of classification. If a rule does exist, the priority associated with the rule replaces the current priority of the frame.

The switch then forwards the frames to the appropriate priority queue based upon the priority that is assigned to the frames.

610-0184-095

June 14, 2001

5

Image 5
Contents Overview Cajun P550R/P580/P880/P882 Switch Release NotesHardware New Hardware and Software FeaturesSoftware Features June 14 Queue Classification and Servicing Features Supported Product Binaries and Boot CodesType of Switch Binary File Boot File OverviewClassification of Traffic WFQ Queue-Servicing Algorithm Port Mirroring on 80-Series ModulesSetting Up Port Mirroring Configuring Port Mirroring By Using the CLIPort Ranges for 80-Series Port Mirroring Port Ranges for 80-Series Port Mirroring Config# clear port mirror fabricmode2 channel channel If you select Then Configuring Port Mirroring By Using the Web AgentEnabling Option 82 for Dhcp Changing the Status of Option 82 by Using the Web AgentChanging the Status of Option 82 by Using Snmp Changing the Status of Option 82 by Using the CLIMIB Item Cjnipv4serv.mibEnabling Traps for Unknown Source Addresses Enabling MAC Address Lock and Traps by Using the Web AgentEnabling MAC Address Lock and Traps by Using the CLI ProminetMib.txt, version Enabling MAC Address Lock and Traps by Using SnmpProminetMib.txt MIB, MIB Items, and OIDs for MAC Address LockEnhancements Changed CLI CommandsCorrected Problems Command Line Interface CLI Known Problems and WorkaroundsATM Uplink Modules Flood Rate LimitingDesired Rate Web or CLI Setting Frames Transmitted with Cyclic Redundancy Check CRC ErrorsIntelligent Multicasting Hot Swap ModulesIgmp Group Membership Table Example L3 Forwarding Cache IPXPoint-to-Point Protocol PPP and Telnet Option 82 for DchpSeries Modules Port MirroringSimple Network-Management Protocol Snmp Redundant Switch ControllerRemote Monitoring Rmon Supervisor Module Downloading the Startup Configuration FileP580/P882 Chassis Slot Following error message in the CLI Switch PortsWeb AFT Issues Vlan IssuesFunctional Restrictions Auto-NegotiationCajunView Checksum Error MessageCPU Synchronization Legacy CLILink Status Distance Vector Multicast Routing Protocol DvmrpHunt Groups Oversized Packets Loopback TestsNetscape Software License Keying Redundant Controller SupportSpanning Tree Protocol STP 3Com TaggingTftp Download Status Delay Documentation Updates and CorrectionsCajun P550R/P880/P882 Switch User Guide Web AgentClick Interfaces Technical SupportCommand Setting the Priority of a PortExamples Setting a Port to Ignore Tag PriorityDisplaying the Port Settings Setting a Rule in an Access Control List June 14 Displaying Access Control Lists Setting WFQ Correct syntax for Command 2 is Displaying the Queue Service Settings