CTRON-TX-QUEUE-ARBITRATION-MIB DEFINITIONS ::= BEGIN -- ctron-tx-queue-arbitration-mib.txt -- Revision: 01.00.03 -- Part Number: -- Date: "200501141756Z" - Fri Jan 14 17:56 GMT 2005 -- ctron-tx-queue-arbitration-mib.txt -- Revision: 01.00.02 -- Part Number: -- Date: October 5, 1998 -- Cabletron Systems, Inc. -- 35 Industrial Way, P.O. Box 5005 -- Rochester, NH 03867-0505 -- (603) 332-9400 -- support@ctron.com -- This module provides authoritative definitions for Cabletron's -- enterprise-specific priority queueing MIB. -- -- This module will be extended, as required. -- -- Cabletron Systems reserves the right to make changes in -- specification and other information contained in this document -- without prior notice. The reader should consult Cabletron Systems -- to determine whether any such changes have been made. -- -- In no event shall Cabletron Systems be liable for any incidental, -- indirect, special, or consequential damages whatsoever (including -- but not limited to lost profits) arising out of or related to this -- document or the information contained in it, even if Cabletron -- Systems has been advised of, known, or should have known, the -- possibility of such damages. -- -- Cabletron grants vendors, end-users, and other interested parties -- a non-exclusive license to use this Specification in connection -- with the management of Cabletron products. -- Copyright September 1998-2005 Cabletron Systems IMPORTS OBJECT-TYPE FROM RFC-1212 ctTxQArb FROM CTRON-MIB-NAMES ifIndex FROM RFC1213-MIB; -- The ctTxQArb MIB provides configuration for the priority in -- which transmit queues are serviced for Cabletron -- devices that support multiple transmit queues. ctTxQArbConfig OBJECT IDENTIFIER ::= { ctTxQArb 1 } -- The ctTxQArbConfig group manages the selection of priorities -- for servicing a specific port group's transmit queues. -- -- The implementation of this group is MANDATORY. ctTxQBufferConfig OBJECT IDENTIFIER ::= { ctTxQArb 2 } -- The ctTxQBufferConfig group manages the buffer distribution -- mechanism for the Tx and Rx queues. -- -- The implementation of this group is OPTIONAL. ctTxQPortGroupMapTable OBJECT-TYPE SYNTAX SEQUENCE OF CtTxQPortGroupEntry ACCESS not-accessible STATUS mandatory DESCRIPTION "The ctTxQPortGroupMapTable defines the mapping of interfaces to a specific port group." ::= { ctTxQArbConfig 1 } ctTxQPortGroupEntry OBJECT-TYPE SYNTAX CtTxQPortGroupEntry ACCESS not-accessible STATUS mandatory DESCRIPTION "Defines a particular entry containing objects pertaining to definition and control over interfaces supporting multiple transmit queue arbitration." INDEX { ifIndex } ::= { ctTxQPortGroupMapTable 1 } CtTxQPortGroupEntry ::= SEQUENCE { ctTxQPortGroup INTEGER } ctTxQPortGroup OBJECT-TYPE SYNTAX INTEGER ACCESS read-only STATUS mandatory DESCRIPTION "Indicates the transmit queue port group to which the interface claims membership. The specific interface is indicated by the instancing information." ::= { ctTxQPortGroupEntry 1 } ctTxQArbTable OBJECT-TYPE SYNTAX SEQUENCE OF CtTxQArbEntry ACCESS not-accessible STATUS mandatory DESCRIPTION "A table containing entries to specify the approximate priority for servicing of each transmit queue for each port group on the device." ::= { ctTxQArbConfig 2 } ctTxQArbEntry OBJECT-TYPE SYNTAX CtTxQArbEntry ACCESS not-accessible STATUS mandatory DESCRIPTION "Specifies the entries in the ctTxQArbTable." INDEX { ctTxQPortGroup } ::= { ctTxQArbTable 1 } CtTxQArbEntry ::= SEQUENCE { ctTxQArbNumQueues INTEGER, ctTxQArbNumSlices INTEGER, ctTxQArbSetting OCTET STRING } ctTxQArbNumQueues OBJECT-TYPE SYNTAX INTEGER ACCESS read-only STATUS mandatory DESCRIPTION "The number of transmit queues for each port in this port group." ::= { ctTxQArbEntry 2 } ctTxQArbNumSlices OBJECT-TYPE SYNTAX INTEGER ACCESS read-only STATUS mandatory DESCRIPTION "The number of 'slices' into which transmit resources are divided. This determines the resolution with which transmit priority can be allocated to each of the transmit queues. For example, if the number of slices is 16, then transmit resources may be allocated to each transmit queue in units of 1/16 (6.25% of the total). The numbers of slices allocated to all queues must add up to the value of this object (i.e., 100%)." ::= { ctTxQArbEntry 3 } ctTxQArbSetting OBJECT-TYPE SYNTAX OCTET STRING ACCESS read-write STATUS mandatory DESCRIPTION "The approximate percentage of a port's transmit resources to be allocated to each transmit queue. This allows for fine-tuning of the 'strict priority' configuration. Under strict priority, the highest queue (ctTxQArbNumQueues - 1) has the highest priority, followed by (ctTxQArbNumQueues - 2), etc. Queue 0 always has the lowest priority. All entries in a higher priority queue will be transmitted before any entries from the lower priority queues. This object allows the modification of the strict priority scheme so that lower priority queues can be guaranteed some access to the transmitter. This object is an octet string in which the number of octets corresponds to the number of transmit queues for each port in this port group, as indicated by ctTxQArbNumQueues. The value of the first octet represents the number of 'slices' of transmit resources to allocate to Queue 0, the second octet represents the number for Queue 1, and so forth. The sum of all the octets in the octet string must add up to the total number of slices available for the port. For example, on a port having 4 transmit queues and where transmit resources are divided into 16 slices, writing an octet string of {0x00, 0x04, 0x04, 0x08} would have the following effect: At least 50% of the frames transmitted are from Queue 3 At least 25% of the frames transmitted are from Queue 2 At least 25% of the frames transmitted are from Queue 1 No frames will be transmitted from Queue 0 until Queues 1, 2 and 3 are empty." ::= { ctTxQArbEntry 4 } ctTxQBufferOptimizeEnable OBJECT-TYPE SYNTAX INTEGER { enable(1), disable(2) } ACCESS read-write STATUS optional DESCRIPTION "enabled (1) - optimize system buffer distribution for default CoS queue disabled (2) - use default system buffer distribution." ::= { ctTxQBufferConfig 1 } END