All MIBs › COM21-HCXVLAN-MIB › hcxVlanIpDhcpSnoopFiltEnbl
hcxVlanIpDhcpSnoopFiltEnbl
Module: COM21-HCXVLAN-MIB
OID (symbolic): COM21-HCXVLAN-MIB::hcxVlanIpDhcpSnoopFiltEnbl
OID (numeric): 1.3.6.1.4.1.1141.2.81.1.1.17
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-write
Description: Specifies whether DHCP snooping should be enabled on this VLAN. This filter is applicable to 100BT, and OC3 cards. It is not applicable to 10BT card. It snoops traffic in the downstream direction for DHCPACK packets, and in the upstream direction for DHCPDECLINE or DHCPRELEASE packets. Dynamic IP address assigments thus learned are stored in the valid source IP address table (com21HcxStuSrcIpAddrGroup.) Default is false. This filter can also be enabled for a specific ComPort via the MIB attribute hcxStuIpDhcpSnoopFiltEnbl.
What is hcxVlanIpDhcpSnoopFiltEnbl?
This read-write true/false attribute, false by default and applicable only to 100BT and OC3 cards, enables DHCP snooping on this VLAN, watching downstream DHCPACK packets and upstream DHCPDECLINE or DHCPRELEASE packets to learn dynamic IP address assignments. An admin enables it to have the system automatically track which IP address belongs to which subscriber modem. For example, an admin enables DHCP snooping on VLAN 12 so the system automatically learns and verifies each modem's DHCP-assigned IP address.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.1141.2.81.1.1.17 snmpwalk -v2c -c public <target> COM21-HCXVLAN-MIB::hcxVlanIpDhcpSnoopFiltEnbl
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.1141.2.81.1.1.17.1 snmpget -v2c -c public <target> COM21-HCXVLAN-MIB::hcxVlanIpDhcpSnoopFiltEnbl.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.1141.2.81.1.1.17.1 i <value>
Start monitoring Com21 ComController HCX VLAN management (legacy) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the COM21-HCXVLAN-MIB::hcxVlanIpDhcpSnoopFiltEnbl OID value, configure state conditions and alerts, and monitor any Com21 ComController HCX VLAN management (legacy) 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 |
| 1.3.6.1.4.1.1141 | com21 | COM21-HCX-MIB |
| 1.3.6.1.4.1.1141.2 | com21Hcx | COM21-HCX-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.1141.2.81 | com21HcxVlanCtrlGroup | COM21-HCXVLAN-MIB |
| 1.3.6.1.4.1.1141.2.81.1 | com21HcxVlanCtrlTable | COM21-HCXVLAN-MIB |
| 1.3.6.1.4.1.1141.2.81.1.1 | com21HcxVlanCtrlEntry | COM21-HCXVLAN-MIB |
| 1.3.6.1.4.1.1141.2.81.1.1.17 | hcxVlanIpDhcpSnoopFiltEnbl | COM21-HCXVLAN-MIB |