RADLAN-DHCP-MIB

All MIBs › RADLAN-DHCP-MIB

Last Updated: 2003-10-18

Category: DHCP, Vendor: RADLAN/Cisco SB

Description: Configures DHCP relay and snooping functions on Marvell switch VLANs and ports.

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What Is RADLAN-DHCP-MIB?

RADLAN-DHCP-MIB is a private Marvell/Radlan switch MIB configuring DHCP relay, snooping, and an embedded DHCP server on Marvell-based switch VLANs and ports. It exposes mostly configuration objects, but several enable/exists flags function as software service-status indicators showing whether the relay agent or embedded DHCP server subsystem is actually running. Monitoring this MIB centers on confirming that the DHCP relay path and, where used, the local DHCP server service are up and correctly forwarding or serving address requests, rather than reporting hardware metrics. It builds on the standard DHCP protocol concepts from RFC 2131 and relies on interface/VLAN indexing conventions shared with other switch MIBs. It is typically deployed on access or distribution switches acting as DHCP relay agents toward centralized DHCP servers, or offering embedded DHCP service for small networks. Engineers can download the RADLAN-DHCP-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in RADLAN-DHCP-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

Marvell/Radlan-based managed switch

Monitoring Examples

rlDhcpRelayEnable and rlDhcpRelayExists show whether relay is configured and active, while rlDhcpRelayNextServerTable/Entry lists configured DHCP server IPs (rlDhcpRelayNextServerIpAddr) with a security threshold and rlDhcpRelayNextServerRowStatus. An admin seeing that row status move to notInService for a critical server entry would understand why clients on that VLAN are failing to obtain addresses. rlDhcpSrvEnable and rlDhcpSrvDbLocation can be checked to confirm the embedded DHCP server service is running and where its lease database resides.

What Can Be Monitored

DHCP relay agent enable/status
configured next-server (DHCP server) IP addresses
relay row status per server entry
embedded DHCP server enable status
DHCP server database location

Imported Objects

From RADLAN-MIB

rnd	OBJECT-IDENTITY

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-SMI

IpAddress
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
RowStatus
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
rsDHCP	1.3.6.1.4.1.89.38			The private MIB module definition for DHCP server support.
INT rsDhcpMibVersion	1.3.6.1.4.1.89.38.14	INTEGER	read-write	DHCP MIB's version, the current version is 4.
T/F rlDhcpRelayEnable	1.3.6.1.4.1.89.38.25	TruthValue	read-write	Enable or disable the use of the DHCP relay.
T/F rlDhcpRelayExists	1.3.6.1.4.1.89.38.26	TruthValue	read-only	This variable shows whether the device can function as a DHCP Relay Agent.
rlDhcpRelayNextServerTable	1.3.6.1.4.1.89.38.27		not-accessible	The DHCP Relay Next Servers configuration Table
rlDhcpRelayNextServerEntry	1.3.6.1.4.1.89.38.27.1		not-accessible	The row definition for this table. DHCP requests are relayed to the specified next server according to their threshold values.
IP rlDhcpRelayNextServerIpAddr	1.3.6.1.4.1.89.38.27.1.1	IpAddress	read-only	The IPAddress of the next configuration server. DHCP Server may act as a DHCP relay if this parameter is not equal to 0.0.0.0.
U32 rlDhcpRelayNextServerSecThreshold	1.3.6.1.4.1.89.38.27.1.2	Unsigned32	read-write	DHCP requests are relayed only if their SEC field is greater or equal to the threshold value in order to allow local DHCP Servers to answer first.
ROW rlDhcpRelayNextServerRowStatus	1.3.6.1.4.1.89.38.27.1.3	RowStatus	read-write	This variable displays the validity or invalidity of the entry. Setting it to 'destroy' has the effect of rendering it inoperative. The internal effect (row removal) is implementation dependent.
T/F rlDhcpSrvEnable	1.3.6.1.4.1.89.38.30	TruthValue	read-write	Enable or Disable the use of the DHCP Server.
T/F rlDhcpSrvExists	1.3.6.1.4.1.89.38.31	TruthValue	read-only	This variable shows whether the device can function as a DHCP Server.
INT rlDhcpSrvDbLocation	1.3.6.1.4.1.89.38.32	INTEGER	read-only	Describes where DHCP Server database is stored.
U32 rlDhcpSrvMaxNumOfClients	1.3.6.1.4.1.89.38.33	Unsigned32	read-only	This variable shows maximum number of clients that can be supported by DHCP Server dynamic allocation.
U32 rlDhcpSrvDbNumOfActiveEntries	1.3.6.1.4.1.89.38.34	Unsigned32	read-only	This variable shows number of active entries stored in database.
T/F rlDhcpSrvDbErase	1.3.6.1.4.1.89.38.35	TruthValue	read-write	The value is always false. Setting this variable to true causes erasing all entries in DHCP database.
T/F rlDhcpSrvProbeEnable	1.3.6.1.4.1.89.38.36	TruthValue	read-write	Enable or Disable the use of the DHCP probe before allocating an IP address.
U32 rlDhcpSrvProbeTimeout	1.3.6.1.4.1.89.38.37	Unsigned32	read-write	Indicates the peiod of time in milliseconds the DHCP probe will wait before issuing a new trial or deciding that no other device on the network has the IP address which DHCP considers allocating.
U32 rlDhcpSrvProbeRetries	1.3.6.1.4.1.89.38.38	Unsigned32	read-write	Indicates how many times DHCP will probe before deciding that no other device on the network has the IP address which DHCP considers allocating.
rlDhcpSrvIpAddrTable	1.3.6.1.4.1.89.38.45		not-accessible	Table of IP Addresses allocated by DHCP Server by static and dynamic allocations.
rlDhcpSrvIpAddrEntry	1.3.6.1.4.1.89.38.45.1		not-accessible	The row definition for this table. Parameters of DHCP allocated IP Addresses table.
IP rlDhcpSrvIpAddrIpAddr	1.3.6.1.4.1.89.38.45.1.1	IpAddress	read-write	The IP address that was allocated by DHCP Server.
IP rlDhcpSrvIpAddrIpNetMask	1.3.6.1.4.1.89.38.45.1.2	IpAddress	read-write	The subnet mask associated with the IP address of this entry. The value of the mask is an IP address with all the network bits set to 1 and all the hosts bits set to 0.
OCT rlDhcpSrvIpAddrIdentifier	1.3.6.1.4.1.89.38.45.1.3	OCTET STRING	read-write	Unique Identifier for client. Either physical address or DHCP Client Identifier.
INT rlDhcpSrvIpAddrIdentifierType	1.3.6.1.4.1.89.38.45.1.4	INTEGER	read-write	Identifier Type. Either physical address or DHCP Client Identifier.
STR rlDhcpSrvIpAddrClnHostName	1.3.6.1.4.1.89.38.45.1.5	SnmpAdminString	read-write	Client Host Name. DHCP Server will use it to update DNS Server. Must be unique per client.
INT rlDhcpSrvIpAddrMechanism	1.3.6.1.4.1.89.38.45.1.6	INTEGER	read-write	Mechanism of allocation IP Address by DHCP Server. The only value that can be set by user is manual.
U32 rlDhcpSrvIpAddrAgeTime	1.3.6.1.4.1.89.38.45.1.7	Unsigned32	read-only	Age time of the IP Address.
STR rlDhcpSrvIpAddrPoolName	1.3.6.1.4.1.89.38.45.1.8	DisplayString	read-write	Ip address pool name. A unique name for host pool static allocation, or network pool name in case of dynamic allocation.
STR rlDhcpSrvIpAddrConfParamsName	1.3.6.1.4.1.89.38.45.1.9	DisplayString	read-write	This variable points (serves as key) to appropriate set of parameters in the DHCP Server configuration parameters table.
ROW rlDhcpSrvIpAddrRowStatus	1.3.6.1.4.1.89.38.45.1.10	RowStatus	read-write	The row status variable, used according to row installation and removal conventions.
rlDhcpSrvDynamicTable	1.3.6.1.4.1.89.38.46		not-accessible	The DHCP Dynamic Server's configuration Table
rlDhcpSrvDynamicEntry	1.3.6.1.4.1.89.38.46.1		not-accessible	The row definition for this table. Parameters sent in as a DHCP Reply to DHCP Request with specified indices
STR rlDhcpSrvDynamicPoolName	1.3.6.1.4.1.89.38.46.1.1	DisplayString	read-write	The name of DHCP dynamic addresses pool.
IP rlDhcpSrvDynamicIpAddrFrom	1.3.6.1.4.1.89.38.46.1.2	IpAddress	read-write	The first IP address allocated in this row.
IP rlDhcpSrvDynamicIpAddrTo	1.3.6.1.4.1.89.38.46.1.3	IpAddress	read-write	The last IP address allocated in this row.
IP rlDhcpSrvDynamicIpNetMask	1.3.6.1.4.1.89.38.46.1.4	IpAddress	read-write	The subnet mask associated with the IP addresses of this entry. The value of the mask is an IP address with all the network bits set to 1 and all the hosts bits set to 0.
U32 rlDhcpSrvDynamicLeaseTime	1.3.6.1.4.1.89.38.46.1.5	Unsigned32	read-write	Maximum lease-time in seconds granted to a requesting DHCP client. For automatic allocation use 0xFFFFFFFF. To exclude addresses from allocation mechanism, set this value to 0.
T/F rlDhcpSrvDynamicProbeEnable	1.3.6.1.4.1.89.38.46.1.6	TruthValue	read-write	Enable or Disable the use of the DHCP probe before allocating the address.
U32 rlDhcpSrvDynamicTotalNumOfAddr	1.3.6.1.4.1.89.38.46.1.7	Unsigned32	read-only	Total number of addresses in space.
U32 rlDhcpSrvDynamicFreeNumOfAddr	1.3.6.1.4.1.89.38.46.1.8	Unsigned32	read-only	Free number of addresses in space.
STR rlDhcpSrvDynamicConfParamsName	1.3.6.1.4.1.89.38.46.1.9	DisplayString	read-write	This variable points (serves as key) to appropriate set of parameters in the DHCP Server configuration parameters table.
ROW rlDhcpSrvDynamicRowStatus	1.3.6.1.4.1.89.38.46.1.10	RowStatus	read-write	The row status variable, used according to row installation and removal conventions.
rlDhcpSrvConfParamsTable	1.3.6.1.4.1.89.38.47		not-accessible	The DHCP Configuration Parameters Table
rlDhcpSrvConfParamsEntry	1.3.6.1.4.1.89.38.47.1		not-accessible	The row definition for this table. Each entry corresponds to one specific parameters set.
STR rlDhcpSrvConfParamsName	1.3.6.1.4.1.89.38.47.1.1	DisplayString	read-write	This value is a unique index for the entry in the rlDhcpSrvConfParamsTable.
IP rlDhcpSrvConfParamsNextServerIp	1.3.6.1.4.1.89.38.47.1.2	IpAddress	read-write	The IP of next server for client to use in configuration process.
STR rlDhcpSrvConfParamsNextServerName	1.3.6.1.4.1.89.38.47.1.3	DisplayString	read-write	The mame of next server for client to use in configuration process.
STR rlDhcpSrvConfParamsBootfileName	1.3.6.1.4.1.89.38.47.1.4	DisplayString	read-write	Name of file for client to request from next server.
STR rlDhcpSrvConfParamsRoutersList	1.3.6.1.4.1.89.38.47.1.5	DisplayString	read-write	The value of option code 3, which defines default routers list. Each IP address is represented in dotted decimal notation format with ';' between them.
STR rlDhcpSrvConfParamsTimeSrvList	1.3.6.1.4.1.89.38.47.1.6	DisplayString	read-write	The value of option code 4, which defines time servers list. Each IP address is represented in dotted decimal notation format with ';' between them.
STR rlDhcpSrvConfParamsDnsList	1.3.6.1.4.1.89.38.47.1.7	DisplayString	read-write	The value of option code 6, which defines the list of DNSs. Each IP address is represented in dotted decimal notation format with ';' between them.
STR rlDhcpSrvConfParamsDomainName	1.3.6.1.4.1.89.38.47.1.8	SnmpAdminString	read-write	The value option code 15, which defines the domain name..
STR rlDhcpSrvConfParamsNetbiosNameList	1.3.6.1.4.1.89.38.47.1.9	DisplayString	read-write	The value option code 44, which defines the list of NETBios Name Servers. Each IP address is represented in dotted decimal notation format with ';' between them.
INT rlDhcpSrvConfParamsNetbiosNodeType	1.3.6.1.4.1.89.38.47.1.10	INTEGER	read-write	The value option code 46, which defines the NETBios node type. The option will be added only if rlDhcpSrvConfParamsNetbiosNameList is not empty.
STR rlDhcpSrvConfParamsCommunity	1.3.6.1.4.1.89.38.47.1.11	DisplayString	read-write	The value of site-specific option 128, which defines Community. The option will be added only if rlDhcpSrvConfParamsNmsIp is set.
IP rlDhcpSrvConfParamsNmsIp	1.3.6.1.4.1.89.38.47.1.12	IpAddress	read-write	The value of site-specific option 129, which defines IP of Network Manager.
STR rlDhcpSrvConfParamsOptionsList	1.3.6.1.4.1.89.38.47.1.13	DisplayString	read-write	The sequence of option segments. Each option segment is represented by a triplet . The code defines the code of each supported option. The length defines the length of each supported option. The value defines the value of the supported option. If there is a number of elements in the value field, they are divided by ','. Each element of type IP address in value field is represented in dotted decimal notation format.
ROW rlDhcpSrvConfParamsRowStatus	1.3.6.1.4.1.89.38.47.1.14	RowStatus	read-write	The row status variable, used according to row installation and removal conventions.

RFC description

Manages DHCP server configuration and DHCP relay functionality for RADLAN network devices.

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Download RADLAN-DHCP-MIB

What Is RADLAN-DHCP-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description