390 lines
14 KiB
Plaintext
390 lines
14 KiB
Plaintext
-- ----------------------------------------------------------------------
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-- Copyright (c) 3Com Corporation. All Rights Reserved.
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-- ----------------------------------------------------------------------
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A3COM0054-BRASICA2-SPECIFIC DEFINITIONS ::= BEGIN
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IMPORTS
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brasica2 FROM A3COM0004-GENERIC
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OBJECT-TYPE FROM RFC-1212
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ifIndex FROM RFC1213-MIB
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;
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stackConfigGroup OBJECT IDENTIFIER ::= { brasica2 1 }
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-- ------------------------------------------------------------------------
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-- Configuration Stack Table Group
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--
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-- This table provides details on the configuration of a Switch Stack.
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-- ------------------------------------------------------------------------
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prConStackFwdingMode OBJECT-TYPE
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SYNTAX INTEGER {
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fastForward(1),
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fragmentFree(2),
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storeAndForward(3),
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intelligent(4)
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}
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"This object controls whether cut-thru is enabled on the
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stack. Enabling cut-thru can help to minimise the delay
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experienced by packets before they are forwarded to their
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destination. Setting cut-thru to 'fastForward' causes frame
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forwarding to begin as soon as 32 bytes of the frame have been
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received. Setting it to 'fragmentFree' causes frame forwarding
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to begin when 64 bytes have been received. This is slower, but
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eliminates the risk of forwarding an illegally short frame to
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the destination port, however a valid length frame might still
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be forwarded even though it had a CRC error. Setting this
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object to 'storeAndForward' disables cut-thru completely, and
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frames will not be forwarded until they have been received in
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their entirety.
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When the mode is set to intelligent, the effective switching
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mode is set initially to fast forward. The switch then
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monitors the total error rate of frames received on each port,
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and if it exceeds 20 error frames a second it changes the
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effective mode for the port to store and forward. If the error
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rate then drops to zero the effective mode is restored to fast
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forward.
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Whatever forwarding mode is selected, cut-thru cannot operate
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if the destination port is currently involved in 'cut-thru'
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from another port. In this case the device will process the
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frame in store and forward mode."
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::= {stackConfigGroup 1}
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prConStackPaceMode OBJECT-TYPE
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SYNTAX INTEGER {
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notApplicable(1),
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normalEthernet(2),
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lowLatency(3)
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}
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"This object specifies the type of backoff algorithm used on
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the units in the stack. Any port can use the standard ethernet
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algorithm or, for PACE applications, it can be set into low
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latency mode. In this mode, the backoff algorithm is optimised
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to minimise the possibility of collisions. The value of this
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object defines the setting that those ports will use which
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have prConPortPaceMode set to useDefault(2).
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PACE mode can be set for the whole stack or for individual
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ports. When a unit is initialised to factory defaults,
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prconPortPaceMode for every port is set to useDefault(2), and
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the actual setting for the port is decided by the value of
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this object. The manager has the choice, therefore, of varying
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the mode for every port in the stack, or for individual ports
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only."
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::= {stackConfigGroup 2}
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prConStackVLANConfigMode OBJECT-TYPE
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SYNTAX INTEGER {
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notApplicable(1),
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portMode(2),
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autoSelect(3)
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}
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"This object specifies the VLAN mode to be used. Setting it to
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portMode(2) requires the user to configure each port's VLAN
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membership individually, whereas autoSelect(3) causes it to
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acquire its membership from the VLAN Server. The value of this
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object defines the setting that those ports will use which
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have prConPortVLANConfigMode set to useDefault(2).
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VLAN mode can be set for the whole stack or for individual
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ports. When a unit is initialised to factory defaults,
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prconPortVLANConfigMode for every port is set to
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useDefault(2), and the actual setting for the port is decided
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by the value of this object. The manager has the choice,
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therefore, of varying the mode for every port in the stack, or
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for individual ports only."
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::= {stackConfigGroup 3}
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prConStackRAPStudyPort OBJECT-TYPE
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SYNTAX INTEGER
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"This determines the ifIndex of the port a user wishes to
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monitor on the copy port. Monitoring causes all data from the
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study port to be copied to the copy port. The port is
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specified using its ifIndex because that uniquely identifies a
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single port in the stack."
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::= {stackConfigGroup 4}
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prConStackRAPCopyPort OBJECT-TYPE
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SYNTAX INTEGER
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"This is the value of ifIndex specifying the port to which
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data will be copied (mirrored), and must be set to a valid
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value, along with the study port, before monitoring can be
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enabled."
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::= {stackConfigGroup 5}
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prConStackRAPEnable OBJECT-TYPE
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SYNTAX INTEGER {
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off(1),
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on(2)
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}
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"This object controls the Roving Analysis Port (RAP) feature
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in conjunction with prConStackRAPStudyPort and
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prConStackRAPCopyPort. The RAP feature allows all frames sent
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and received on the study port to be copied to the copy port,
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where they can be observed. Setting this object to on(2) will
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enable monitoring. To succeed both prConStackRAPStudyPort and
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prConStackRAPCopyPort must have been set to the ifIndex values
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of suitable ports, and if either are invalid this operation
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will fail."
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::= {stackConfigGroup 6}
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prConStackBridgeMode OBJECT-TYPE
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SYNTAX INTEGER {
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single(1),
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multiple(2)
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}
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"The value of this object determines whether the switch is to
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operate as a single bridge or as a bridge per VLAN (the
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default). In multiple bridge mode the switch maintains a
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separate filtering database for each VLAN, whereas in single
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bridge mode it uses a single database for them all. Thus in
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multiple bridge mode the MAC address of a station can be
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learnt on more than one port provided they are in separate
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VLANs, while in single bridge mode the switch makes just one
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entry for each address. Multiple bridge mode is useful in that
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separate VLANs may be joined by a bridge external to the
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switch, whereas in single bridge mode VLANs may only be
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connected by routers. Not all switches will support both
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modes, and any attempt to set the mode to an unsupported value
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will be rejected."
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::= {stackConfigGroup 7}
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switchConfigGroup OBJECT IDENTIFIER ::= { brasica2 2 }
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-- --------------------------------------------------------------------
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-- Configuration Group
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-- --------------------------------------------------------------------
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-- Configuration Port Table
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--
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-- This table provides details of the configuration of a port on a
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-- Switch unit.
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-- --------------------------------------------------------------------
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prConfigPortTable OBJECT-TYPE
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SYNTAX SEQUENCE OF PrConfigPortEntry
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ACCESS not-accessible
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STATUS mandatory
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DESCRIPTION
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"Table providing configuration information about a port on a
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Switch unit."
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::= {switchConfigGroup 1}
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prConfigPortEntry OBJECT-TYPE
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SYNTAX PrConfigPortEntry
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ACCESS not-accessible
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STATUS mandatory
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DESCRIPTION "Configuration options for a single port."
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INDEX { ifIndex }
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::= {prConfigPortTable 1}
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PrConfigPortEntry ::= SEQUENCE {
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prConPortVLANConfigMode INTEGER,
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prConPortIFM INTEGER,
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prConPortDiscardOnTx INTEGER,
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prConPortPaceMode INTEGER,
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prConPortStpFastStart INTEGER,
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prConPortFlowCntlStatus INTEGER,
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prConPortFlowCntlDefaultStatus INTEGER
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}
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prConPortVLANConfigMode OBJECT-TYPE
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SYNTAX INTEGER {
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notApplicable(1),
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useDefault(2),
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portMode(3),
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autoSelect(4)
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}
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"This object specifies the VLAN mode to be used. Setting it to
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portMode(3) requires the user to configure the port's VLAN
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membership explicitly, whereas autoSelect(4) causes it to
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acquire its membership from the VLAN Server.
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VLAN mode can be set for the whole stack or for individual
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ports. When a unit is initialised to factory defaults,
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prConPortVLANConfigMode for every port is set to
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useDefault(2), and the actual setting for the port is decided
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by the value of prConStackVLANConfigMode. The other values of
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this object allow the setting to be varied for the individual
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port."
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::= {prConfigPortEntry 1}
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prConPortIFM OBJECT-TYPE
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SYNTAX INTEGER {
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notApplicable(1),
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off(2),
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maxJams6(3),
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maxJams7(4),
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maxJams8(5),
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maxJams9(6),
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maxJams10(7),
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maxJams11(8),
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maxJams12(9),
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maxJams13(10)
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}
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"This object controls Intelligent Flow Management for the
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port, which specifies what action the port takes whenever it
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is unable to receive a packet because its buffers are full.
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When set to off(1), the packet is dropped immediately. If it
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is set to any of the values maxJams6(2) to maxJams13(10), a
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jam signal is transmitted to the segment attached to the port
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to force a collision so that the originator will stop and
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retransmit the frame. This will be repeated a maximum of 6 to
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13 times depending on the setting. If the port is then still
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unable to receive the packet it is dropped. Intelligent Flow
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Management should be disabled on ports which are connected to
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repeater segments.
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Intelligent flow management only functions when a port is
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operating in half duplex, either as a result of
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auto-negotiation, or by management action."
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::= {prConfigPortEntry 2}
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prConPortDiscardOnTx OBJECT-TYPE
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SYNTAX INTEGER {
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notApplicable(1),
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off(2),
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on(3)
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}
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"This object controls whether the 'Discard-on-transmit'
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feature is enabled for frames originating at this port. If set
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to on(3), the unit will discard frames destined for any other
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port if that port's transmit buffers are full. If this
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attribute is set to off(2), a frame will be held until that
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port has space available for the frame."
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::= {prConfigPortEntry 3}
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prConPortPaceMode OBJECT-TYPE
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SYNTAX INTEGER {
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notApplicable(1),
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useDefault(2),
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normalEthernet(3),
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lowLatency(4)
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}
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"This object specifies the type of backoff algorithm used on
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the port. A port can use the standard ethernet algorithm or,
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for PACE applications, it can be set to low latency mode. In
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this mode, the backoff algorithm is optimised to minimise the
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possibility of collisions.
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PACE mode can be set for the whole stack or for individual
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ports. When a unit is initialised to factory defaults this
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object is set to useDefault(2) for every port, and the actual
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setting for the port is decided by the value of
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prConStackPaceMode. The manager has the choice, therefore, of
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varying the mode for every port in the stack, or for
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individual ports only."
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::= {prConfigPortEntry 4}
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prConPortStpFastStart OBJECT-TYPE
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SYNTAX INTEGER {
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off(1),
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on(2)
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}
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"This object specifies whether a switch port will go to the
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forwarding state immediately if spanning tree is turned on.
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When this object is set to on(2), the normal intermediate
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startup states of listening and learning are skipped and the
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port is allowed to enter the forwarding spanning tree state
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immediately. This is to allow switch ports that are directly
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connected to just one endstation to be immediately available
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when the link is detected or the switch powers up.
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Note that this object must be set of off(1) for all switch
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ports that are connected to ethernet segments or other
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switches, routers or bridges.
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The default state for all ports is off(1)."
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::= {prConfigPortEntry 5}
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prConPortFlowCntlStatus OBJECT-TYPE
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SYNTAX INTEGER {
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enabled(1),
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disabled(2),
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notApplicable(3)
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}
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ACCESS read-only
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STATUS mandatory
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DESCRIPTION
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"This object represents the operational full duplex flow
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control state of the port, as determined by either (1) the
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result of auto-negotiation, or (2) if auto-negotiation is not
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enabled for this port, by the value of the object
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prConPortFlowCntlDefaultStatus. In the latter case a set to
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prConPortFlowCntlDefaultStatus will force the port into the
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new operating mode.
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If the port is operating in half duplex, the value of this
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object is notApplicable(3)."
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::= { prConfigPortEntry 6 }
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prConPortFlowCntlDefaultStatus OBJECT-TYPE
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SYNTAX INTEGER {
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enabled(1),
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disabled(2)
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}
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"This object represents the administratively-configured full
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duplex flow control status of the port. If auto-negotiation is
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not enabled for this port, the value of this object determines
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the operational full duplex flow control status, and in this
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case a set to this object will force the port into the
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specified state.
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If auto-negotiation is enabled for this port, the operational
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status of the port is determined by auto-negotiation and
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indicated by the value of the prConPortFlowCntlStatus object.
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The value of this object denotes the state to which the port
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will automatically revert should auto-negotiation be disabled.
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The value of this object is ignored if the port is operating
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in half duplex mode."
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::= { prConfigPortEntry 7 }
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END
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