All MIBs › SW-DES3x50-L2MGMT-MIB › swL2IGMPRobustness
swL2IGMPRobustness
Module: SW-DES3x50-L2MGMT-MIB
OID (symbolic): SW-DES3x50-L2MGMT-MIB::swL2IGMPRobustness
OID (numeric): 1.3.6.1.4.1.171.11.2.11.3.1.4
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-write
Description: The Robustness Variable allows tuning for the expected packet loss on a subnet. If a subnet is expected to be lossy, the Robustness Variable may be increased. IGMP is robust to (Robustness Variable-1) packet losses.
What is swL2IGMPRobustness?
Tunes how many IGMP packet losses the switch's IGMP snooping can tolerate on a VLAN before assuming a host or group has really left; an admin raises this above the default of 2 on a lossy or noisy network segment to avoid prematurely dropping multicast receivers due to a few missed packets.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.171.11.2.11.3.1.4 snmpwalk -v2c -c public <target> SW-DES3x50-L2MGMT-MIB::swL2IGMPRobustness
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.171.11.2.11.3.1.4.1 snmpget -v2c -c public <target> SW-DES3x50-L2MGMT-MIB::swL2IGMPRobustness.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.171.11.2.11.3.1.4.1 i <value>
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> swL2IGMPRobustness.1
Start monitoring D-Link DES-3x50 series managed Ethernet switch (Layer 2 VLAN/STP/MAC-table management root) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the SW-DES3x50-L2MGMT-MIB::swL2IGMPRobustness OID value, configure state conditions and alerts, and monitor any D-Link DES-3x50 series managed Ethernet switch (Layer 2 VLAN/STP/MAC-table management root) from a single console.
OID Breakdown
Upper-level ancestors (8 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.171 | d_link | DE1500-MIB |
| 1.3.6.1.4.1.171.11 | dlink_mgmt | DES2218-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.171.11.2 | swL2MgmtMIB | SW-DES3x50-L2MGMT-MIB |
| 1.3.6.1.4.1.171.11.2.11 | swL2IGMPMgmt | SW-DES3x50-L2MGMT-MIB |
| 1.3.6.1.4.1.171.11.2.11.3 | swL2IGMPCtrlTable | SW-DES3x50-L2MGMT-MIB |
| 1.3.6.1.4.1.171.11.2.11.3.1 | swL2IGMPCtrlEntry | SW-DES3x50-L2MGMT-MIB |
| 1.3.6.1.4.1.171.11.2.11.3.1.4 | swL2IGMPRobustness | SW-DES3x50-L2MGMT-MIB |