240 lines
8.8 KiB
Plaintext
240 lines
8.8 KiB
Plaintext
-- **********************************************************************
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-- Copyright 3Com Technologies Limited. (1996-1999) *
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-- **********************************************************************
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--
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-- Change History:
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--
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-- Jan 22, 1999 - tmeiczin Fixed Syntax Errors, Defined Counter
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-- Jan 11, 1999 - tmeiczin moved igmpQueryEnabled and igmpQueryIpAddress
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-- to the end of the table
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-- Dec 14, 1998 - tmeiczin added objects igmpQueryEnabled and
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-- igmpQueryIpAddress
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--
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-- **********************************************************************
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A3COM0073IGMP-SNOOP DEFINITIONS ::= BEGIN
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IMPORTS
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Counter, enterprises, IpAddress
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FROM RFC1155-SMI
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OBJECT-TYPE
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FROM RFC-1212
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ifIndex
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FROM RFC1213-MIB
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-- TruthValue
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-- FROM SNMPv2-TC
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;
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-- Truth Value definition to be enabled for non SNMP_V2 compilers
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TruthValue ::= INTEGER {
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true (1),
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false (2)
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}
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a3Com OBJECT IDENTIFIER ::= { enterprises 43 }
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generic OBJECT IDENTIFIER ::= { a3Com 10 }
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igmpMib OBJECT IDENTIFIER ::= { generic 37 }
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igmpSnoop OBJECT IDENTIFIER ::= { igmpMib 1 }
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igmpSnoopEnabled OBJECT-TYPE
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SYNTAX TruthValue
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"Enables/disables IGMP Snooping on this device. It is set stack-wide.
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The defaule value is True. The range is True(1) or False(2)."
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DEFVAL { true }
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::= { igmpSnoop 1 }
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igmpSnoopRobustness OBJECT-TYPE
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SYNTAX INTEGER (1..2)
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"This enables IGMP tuning on a lossy network if a switch is the
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querier. On such a network it may be increased. It is set stack-wide.
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The default value is 1. The range is 1 to 2.
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There could be a Low(1) or High(2) setting.
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It is used to derive a timeout interval. If no IGMP v2 queries
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are heard on this VLAN within this timeout interval, the local
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switch will take over the querier role in the VLAN, assuming the
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switch has no router ports:
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Other Switch Querier Present Interval =
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(Robustness x General Query Interval) +
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1/2(General Max Query-Response Interval) = 65 seconds by default
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The Robustness is also used to derive another interval. The amount
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of time that must pass before the querying switch decides that there
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are no more hosts listening to a particular multicast in seconds:
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Group Membership Interval =
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(Robustness x General Query Interval) +
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General Max Query-Response Interval = 70 seconds by default."
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DEFVAL { 1 }
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::= { igmpSnoop 2 }
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igmpSnoopLeaveEnabled OBJECT-TYPE
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SYNTAX TruthValue
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"Enables/disables the processing of IGMP v2 leave messages stack-wide.
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The default value is True(1). The range is True(1) or False(2)."
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DEFVAL { true }
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::= { igmpSnoop 3 }
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igmpSnoopQueryTimeout OBJECT-TYPE
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SYNTAX INTEGER(60..125)
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"The frequency at which IGMP general query packets are
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transmitted on this VLAN by the querying switch in seconds.
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So this is the time between general periodic queries being
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sent out of the switch when it is acting as the IGMP querier.
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Large values lead to IGMP queries being sent less often.
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It is set stack-wide.
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The default is 125 seconds and the range is 60 to 125 seconds.
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There could be 2 settings apart from the default.
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Slow Query (100 secs) and Very Slow Query (125 secs)."
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DEFVAL { 125 }
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::= { igmpSnoop 4 }
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igmpSnoopQueryMaxResponseTime OBJECT-TYPE
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SYNTAX INTEGER(10..100)
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"The maximum query response time in seconds advertised in IGMP v2
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queries on this VLAN if the switch is the querier. Smaller values
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allow a switch to prune groups faster. So it is the maximum response
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time inserted into the general periodic queries. This variable
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enables the tuning of the burstiness of the IGMP traffic.
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If it is increased the responses have a larger time span in which
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to be generated by the hosts. It is set stack-wide.
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The default is 10 seconds and the range is 10 to 100 seconds.
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There could be 2 settings apart from the default.
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Slow Response (50 secs) and Very Slow Response (100 secs)."
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DEFVAL { 10 }
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::= { igmpSnoop 5 }
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igmpSnoopLastMemberQueryTimeout OBJECT-TYPE
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SYNTAX INTEGER(1..5)
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"A timeout interval in seconds. Maximum response time inserted
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into the IGMP group specific queries sent in response to an
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IGMP Leave by a querying switch. It is also the time between
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IGMP group specific queries being sent. It is set stack-wide.
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The default is 1 second and the range is 1 to 5 seconds.
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There could be 2 settings apart from the default.
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Slow Response (3 secs) and Very Slow Response (5 secs)."
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DEFVAL { 1 }
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::= { igmpSnoop 6 }
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igmpSnoopLastMemberQueryCount OBJECT-TYPE
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SYNTAX INTEGER(2..5)
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"The number of group specific queries sent before the querying switch
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decides that there are no more hosts listening to a particular group
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multicast address. It is set stack-wide.
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The default is 2 and the range is 2 to 5. There could be 2 settings
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apart from the default. Low count (3) and High count (5)."
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DEFVAL { 2 }
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::= { igmpSnoop 7 }
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igmpSnoopRouterPortRefreshTimeout OBJECT-TYPE
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SYNTAX INTEGER(70..100)
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"A timeout interval in seconds. The maximum time that
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should elapse between multicast
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router protocol PDUs on a port in the VLAN.
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The default is 100 seconds and the range is from 70 to 100 seconds.
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There could be 2 settings apart from the default.
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Slow Refresh (85 secs) and Very Slow Refresh (100 secs)."
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DEFVAL { 100 }
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::= { igmpSnoop 8 }
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--
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-- The IGMP Snooping VLAN Table
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--
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igmpSnoopVLANTable OBJECT-TYPE
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SYNTAX SEQUENCE OF IgmpSnoopVLANEntry
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ACCESS not-accessible
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STATUS mandatory
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DESCRIPTION
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"The (conceptual) table listing the VLANs on which IGMP
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Snooping is enabled."
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::= { igmpSnoop 9 }
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igmpSnoopVLANEntry OBJECT-TYPE
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SYNTAX IgmpSnoopVLANEntry
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ACCESS not-accessible
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STATUS mandatory
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DESCRIPTION
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"An entry (conceptual row) representing a VLAN on
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which IGMP Snooping is enabled."
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INDEX { ifIndex }
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::= { igmpSnoopVLANTable 1 }
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IgmpSnoopVLANEntry ::= SEQUENCE {
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igmpSnoopVLANJoins Counter,
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igmpSnoopVLANLeaves Counter
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}
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igmpSnoopVLANJoins OBJECT-TYPE
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SYNTAX Counter
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ACCESS read-only
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STATUS mandatory
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DESCRIPTION
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"The number of times a group membership has been added on
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this VLAN; i.e. the number of times an entry for
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this VLAN has been added to the IGMP Snooping VLAN Table. This
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object gives an indication of the amount of IGMP activity
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over time. So this is the count of IGMP Reports received
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over time on a VLAN."
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::= { igmpSnoopVLANEntry 1 }
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igmpSnoopVLANLeaves OBJECT-TYPE
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SYNTAX Counter
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ACCESS read-only
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STATUS mandatory
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DESCRIPTION
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"The number of times a group membership has been removed
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from this VLAN; i.e. the number of times an entry
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for this VLAN has been deleted from the IGMP Snooping VLAN Table.
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The difference between this and igmpSnoopVLANJoins indicates
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the number of hosts listening to multicasts. The count of IGMP Leaves
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received over time on a VLAN."
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::= { igmpSnoopVLANEntry 2 }
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igmpQueryEnabled OBJECT-TYPE
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SYNTAX TruthValue
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ACCESS read-write
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STATUS mandatory
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DESCRIPTION
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"Enabled/Disables IGMP Queries for this device.
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The default value is True. The range is True(1) or False(2)."
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DEFVAL { true }
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::= { igmpSnoop 10 }
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igmpQueryIpAddress OBJECT-TYPE
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SYNTAX IpAddress
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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 IP address used in IGMP Queries. The default value
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is the management IP address. Since the root query device is
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determined by the lowest IP address, you can vary this value
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to increase or decrease the priority of the device."
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::= { igmpSnoop 11 }
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END
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