SOURCE-ROUTING-MIB :: dot1dSrPortLargestFrame

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsSOURCE-ROUTING-MIBdot1dSrPortLargestFrame

dot1dSrPortLargestFrame

Module: SOURCE-ROUTING-MIB

OID (symbolic): SOURCE-ROUTING-MIB::dot1dSrPortLargestFrame

OID (numeric): 1.3.6.1.2.1.17.3.1.1.6

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-write

Description: The maximum size of the INFO field (LLC and above) that this port can send/receive. It does not include any MAC level (framing) octets. The value of this object is used by this bridge to determine whether a modification of the LargestFrame (LF, see [14]) field of the Routing Control field of the Routing Information Field is necessary.

64 valid values are defined by the IEEE 802.5M SRT Addendum: 516, 635, 754, 873, 993, 1112, 1231, 1350, 1470, 1542, 1615, 1688, 1761, 1833, 1906, 1979, 2052, 2345, 2638, 2932, 3225, 3518, 3812, 4105, 4399, 4865, 5331, 5798, 6264, 6730, 7197, 7663, 8130, 8539, 8949, 9358, 9768, 10178, 10587, 10997, 11407, 12199, 12992, 13785, 14578, 15370, 16163, 16956, 17749, 20730, 23711, 26693, 29674, 32655, 35637, 38618, 41600, 44591, 47583, 50575, 53567, 56559, 59551, and 65535.

An illegal value will not be accepted by the bridge.

What is dot1dSrPortLargestFrame?

The maximum INFO field size, excluding MAC framing, this port can send or receive, chosen from a fixed list of IEEE 802.5 SRT values, used by the bridge to decide whether to modify the LargestFrame field in transit frames.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.2.1.17.3.1.1.6
snmpwalk -v2c -c public <target> SOURCE-ROUTING-MIB::dot1dSrPortLargestFrame

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.2.1.17.3.1.1.6.1
snmpget -v2c -c public <target> SOURCE-ROUTING-MIB::dot1dSrPortLargestFrame.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.2.1.17.3.1.1.6.1 i <value>

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OID Breakdown

Upper-level ancestors (10 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.2mgmtAXON-MIB
1.3.6.1.2.1mib_2AXON-MIB
1.3.6.1.2.1.17dot1dBridgeBRIDGE-MIB
1.3.6.1.2.1.17.3dot1dSrBRIDGE-MIB
1.3.6.1.2.1.17.3.1dot1dSrPortTableRFC1286-MIB
1.3.6.1.2.1.17.3.1.1dot1dSrPortEntryRFC1286-MIB
Numeric OIDNameModule
1.3.6.1.2.1.17.3.1.1.6dot1dSrPortLargestFrameSOURCE-ROUTING-MIB