H3C-DHCPRELAY-MIB

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Organization: Huawei 3Com Technologies Co.,Ltd.

Last Updated: 2005-06-08

Category: Protocol: DHCP, Vendor: H3C/HH3C

Description: H3C MIB for DHCP relay agent configuration and statistics, managing relay helper addresses and packet forwarding.

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What Is H3C-DHCPRELAY-MIB?

H3C-DHCPRELAY-MIB is an H3C private-enterprise MIB for DHCP relay agent functionality, which forwards DHCP client broadcast requests from a local subnet to a remote DHCP server across routed network boundaries. It is expected to expose configuration data such as per-interface relay/helper-address assignments along with statistics on DHCP packets relayed. Its monitoring emphasis is protocol/service health: confirming the relay function is actively forwarding requests and tracking counters that would reveal a spike in failed lease acquisitions if the relay stopped working. It naturally complements the H3C-DHCPSNOOP-MIB and standard DHCP relay conventions (RFC 3046-style relay agent behavior) for a fuller DHCP security and monitoring picture. Deployment context is H3C switches/routers acting as DHCP relay agents at the edge of enterprise or campus subnets that lack a local DHCP server. Network engineers evaluating or troubleshooting this functionality can download the H3C-DHCPRELAY-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in H3C-DHCPRELAY-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

H3C switch/router acting as DHCP relay agent

Monitoring Examples

This excerpt lists no object or table names, so a concrete polling scenario cannot be grounded in confirmed identifiers from the source; the module description itself is only the terse legacy label 'HUAWEI-3COM DHCPR MIB'. Typically such a MIB would expose per-interface helper-address configuration and relayed-packet counters that an operator would poll to confirm DHCP requests are reaching the remote server, but none of these names are verified here.

What Can Be Monitored

DHCP relay enable/configuration
helper address assignment per interface
DHCP packets relayed

Imported Objects

From HUAWEI-3COM-OID-MIB

h3cCommon

OBJECT-IDENTITY

From INET-ADDRESS-MIB

InetAddress
InetAddressType

From RFC1213-MIB

ifIndex

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

MacAddress
RowStatus
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
h3cDhcpRelay	1.3.6.1.4.1.2011.10.2.58			HUAWEI-3COM DHCPR MIB
h3cDHCPRMibObject	1.3.6.1.4.1.2011.10.2.58.1
h3cDHCPRIfSelectTable	1.3.6.1.4.1.2011.10.2.58.1.1		not-accessible	A table for configuring relay mode for interfaces.
h3cDHCPRIfSelectEntry	1.3.6.1.4.1.2011.10.2.58.1.1.1		not-accessible	An entry for configuring relay mode for an interface.
INT h3cDHCPRIfSelectRelayMode	1.3.6.1.4.1.2011.10.2.58.1.1.1.1	INTEGER	read-write	If the value is on, the DHCP relay function would be enabled on this interface.
h3cDHCPRIpToGroupTable	1.3.6.1.4.1.2011.10.2.58.1.2		not-accessible	A table for configuring ip addresses for DHCP server groups.
h3cDHCPRIpToGroupEntry	1.3.6.1.4.1.2011.10.2.58.1.2.1		not-accessible	An entry for configuring ip addresses for a DHCP server group.
I32 h3cDHCPRIpToGroupGroupId	1.3.6.1.4.1.2011.10.2.58.1.2.1.1	Integer32	not-accessible	Group identifier of DHCP server group.
IPt h3cDHCPRIpToGroupServerIpType	1.3.6.1.4.1.2011.10.2.58.1.2.1.2	InetAddressType	not-accessible	Ip address type of DHCP server.
IP h3cDHCPRIpToGroupServerIp	1.3.6.1.4.1.2011.10.2.58.1.2.1.3	InetAddress	not-accessible	Ip address of DHCP server.
ROW h3cDHCPRIpToGroupRowStatus	1.3.6.1.4.1.2011.10.2.58.1.2.1.4	RowStatus	read-create	Operation status of this table entry. Three actions are used: active, createAndGo, destroy.
h3cDHCPRIfToGroupTable	1.3.6.1.4.1.2011.10.2.58.1.3		not-accessible	A table for configuring DHCP server groups for interfaces.
h3cDHCPRIfToGroupEntry	1.3.6.1.4.1.2011.10.2.58.1.3.1		not-accessible	An entry for configuring DHCP server group for an interface.
I32 h3cDHCPRIfToGroupGroupId	1.3.6.1.4.1.2011.10.2.58.1.3.1.1	Integer32	read-write	The DHCP server group for this interface.
ROW h3cDHCPRIfToGroupRowStatus	1.3.6.1.4.1.2011.10.2.58.1.3.1.2	RowStatus	read-create	Operation status of this table entry. Three actions are used: active, createAndGo, destroy
h3cDHCPRAddrCheckTable	1.3.6.1.4.1.2011.10.2.58.1.4		not-accessible	A table containing the states of dhcp security address check switchs for interfaces.
h3cDHCPRAddrCheckEntry	1.3.6.1.4.1.2011.10.2.58.1.4.1		not-accessible	An entry containing the state of dhcp security address check switch for an interface.
INT h3cDHCPRAddrCheckSwitch	1.3.6.1.4.1.2011.10.2.58.1.4.1.1	INTEGER	read-write	The state of dhcp security address check switch for this interface. It has two defined values: enabled and disabled. If the value is enabled, the address check function would be enabled. The default value is disabled.
h3cDHCPRSecurityTable	1.3.6.1.4.1.2011.10.2.58.1.5		not-accessible	A table containing the information of DHCP security.
h3cDHCPRSecurityEntry	1.3.6.1.4.1.2011.10.2.58.1.5.1		not-accessible	An entry containing the information of DHCP security.
IPt h3cDHCPRSecurityClientIpAddrType	1.3.6.1.4.1.2011.10.2.58.1.5.1.1	InetAddressType	not-accessible	DHCP client's net ip address type
IP h3cDHCPRSecurityClientIpAddr	1.3.6.1.4.1.2011.10.2.58.1.5.1.2	InetAddress	not-accessible	DHCP client's net ip address
MAC h3cDHCPRSecurityClientMacAddr	1.3.6.1.4.1.2011.10.2.58.1.5.1.3	MacAddress	read-write	DHCP client's mac address
INT h3cDHCPRSecurityClientProperty	1.3.6.1.4.1.2011.10.2.58.1.5.1.4	INTEGER	read-write	Property of client address
ROW h3cDHCPRSecurityClientRowStatus	1.3.6.1.4.1.2011.10.2.58.1.5.1.5	RowStatus	read-create	Operation status of this table entry. Three actions are used: active, createAndGo, destroy
h3cDHCPRStatisticsGroup	1.3.6.1.4.1.2011.10.2.58.1.6
U32 h3cDHCPRRxClientPktNum	1.3.6.1.4.1.2011.10.2.58.1.6.1	Unsigned32	read-only	The total number of the packets received from DHCP clients by DHCP relay.
U32 h3cDHCPRTxClientPktNum	1.3.6.1.4.1.2011.10.2.58.1.6.2	Unsigned32	read-only	The total number of the brodcast packets transmitted to DHCP clients by DHCP relay.
U32 h3cDHCPRRxServerPktNum	1.3.6.1.4.1.2011.10.2.58.1.6.3	Unsigned32	read-only	The total number of the packets received from DHCP Servers by DHCP relay.
U32 h3cDHCPRTxServerPktNum	1.3.6.1.4.1.2011.10.2.58.1.6.4	Unsigned32	read-only	The total number of the packets transmitted to DHCP Servers by DHCP relay.
U32 h3cDHCPRDiscoverPktNum	1.3.6.1.4.1.2011.10.2.58.1.6.5	Unsigned32	read-only	The total number of the DHCP Discover packets handled by DHCP relay.
U32 h3cDHCPRRequestPktNum	1.3.6.1.4.1.2011.10.2.58.1.6.6	Unsigned32	read-only	The total number of the DHCP Request packets handled by DHCP relay.
U32 h3cDHCPRDeclinePktNum	1.3.6.1.4.1.2011.10.2.58.1.6.7	Unsigned32	read-only	The total number of the DHCP Decline packets handled by DHCP relay.
U32 h3cDHCPRReleasePktNum	1.3.6.1.4.1.2011.10.2.58.1.6.8	Unsigned32	read-only	The total number of the DHCP Release packets handled by DHCP relay.
U32 h3cDHCPRInformPktNum	1.3.6.1.4.1.2011.10.2.58.1.6.9	Unsigned32	read-only	The total number of the DHCP Inform packets handled by DHCP relay.
U32 h3cDHCPROfferPktNum	1.3.6.1.4.1.2011.10.2.58.1.6.10	Unsigned32	read-only	The total number of the DHCP Offer packets handled by DHCP relay.
U32 h3cDHCPRAckPktNum	1.3.6.1.4.1.2011.10.2.58.1.6.11	Unsigned32	read-only	The total number of the DHCP Ack packets handled by DHCP relay.
U32 h3cDHCPRNakPktNum	1.3.6.1.4.1.2011.10.2.58.1.6.12	Unsigned32	read-only	The total number of the DHCP Nak packets handled by DHCP relay.
T/F h3cDHCPRStatisticsReset	1.3.6.1.4.1.2011.10.2.58.1.6.13	TruthValue	read-write	This node only supports set operation. If the value is true,it will clear all of the packet statistics.
h3cDHCPRCycleGroup	1.3.6.1.4.1.2011.10.2.58.1.7
INT h3cDHCPRCycleStatus	1.3.6.1.4.1.2011.10.2.58.1.7.1	INTEGER	read-write	If the value is on, the cycle function would be enabled.
h3cDHCPRConfigOption82Group	1.3.6.1.4.1.2011.10.2.58.1.8
INT h3cDHCPROption82Switch	1.3.6.1.4.1.2011.10.2.58.1.8.1	INTEGER	read-write	If the value is enabled, DHCP relay supporting option 82 function would be enabled.
INT h3cDHCPROption82HandleStrategy	1.3.6.1.4.1.2011.10.2.58.1.8.2	INTEGER	read-write	The strategies of DHCP relay handling option 82. 'drop' indicates DHCP relay discarding the request packet including option 82. 'keep' indicates DHCP relay accepting the request packet without any change of the option 82. 'replace' indicates DHCP relay accepting the request packet on condition that it generates a new option 82 to replace the original one.
h3cDHCPRConfigOption82IfTable	1.3.6.1.4.1.2011.10.2.58.1.8.3		not-accessible	A table containing the information of DHCP option 82. This table depends on h3cDHCPRIfToGroupTable. An entry of this table will be created when an entry of h3cDHCPRIfToGroupTable is created.
h3cDHCPRConfigOption82IfEntry	1.3.6.1.4.1.2011.10.2.58.1.8.3.1		not-accessible	An entry containing the information of DHCP option 82.
INT h3cDHCPROption82IfSwitch	1.3.6.1.4.1.2011.10.2.58.1.8.3.1.1	INTEGER	read-write	If DHCP relay supports option 82 functions, the value is 'enabled'. If DHCP relay does not support option 82 functions, the value is 'disabled'.
INT h3cDHCPROption82IfStrategy	1.3.6.1.4.1.2011.10.2.58.1.8.3.1.2	INTEGER	read-write	The strategies of DHCP relay handling option 82. 'drop' indicates DHCP relay discarding the request packet including option 82. 'keep' indicates DHCP relay accepting the request packet without any change of the option 82. 'replace' indicates DHCP relay accepting the request packet on condition that it generates a new option 82 to replace the original one.
INT h3cDHCPROption82IfFormat	1.3.6.1.4.1.2011.10.2.58.1.8.3.1.3	INTEGER	read-write	The format of DHCP relay option 82. 'normal' is the standard format. 'verbose' is the detailed format.
INT h3cDHCPROption82IfNodeType	1.3.6.1.4.1.2011.10.2.58.1.8.3.1.4	INTEGER	read-write	Property of DHCP relay option 82 verbose format. The value can be set by user only when the value of h3cDHCPROption82IfFormat is set with 'verbose'. If the value of h3cDHCPROption82IfFormat is 'normal', the value is automatically set with 'invalid'. the value can not be set with 'invalid' by user. 'mac' indicates the option 82 verbose format is filled in with the mac of DHCP relay input interface. If the value of h3cDHCPROption82IfFormat is set with 'verbose', the value is automatically set with 'mac'. 'sysname' indicates the option 82 verbose format is filled in with the name of the DHCP relay. 'userdefine' indicates the option 82 verbose format is filled in with the string defined by user. If the value is set with 'userdefine', the value of h3cDHCPROption82IfUsrDefString must be set simultaneously.
OCT h3cDHCPROption82IfUsrDefString	1.3.6.1.4.1.2011.10.2.58.1.8.3.1.5	OCTET STRING	read-write	The string defined by user to fill in the option 82 verbose format. If the value of h3cDHCPROption82IfFormat is 'normal', or the value of h3cDHCPROption82IfNodeType is 'mac' or 'sysname', it is set with a null string automatically and can not be modified by user. It must be set with a non-zero length string when the value of h3cDHCPROption82IfNodeType is set with 'userdefine'.

RFC description

H3C vendor-private MIB for managing DHCP relay agent functionality and configuration on H3C network devices.

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Download H3C-DHCPRELAY-MIB

What Is H3C-DHCPRELAY-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description