ME1200-DHCP-RELAY-MIB

All MIBs › ME1200-DHCP-RELAY-MIB

Organization: Cisco Systems, Inc

Last Updated: 2014-04-28

Category: Protocol: DHCP, Vendor: Cisco

Description: Cisco ME1200 Metro Ethernet switch MIB for DHCP relay agent configuration and statistics objects.

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What Is ME1200-DHCP-RELAY-MIB?

This is a Cisco private MIB module for the ME1200 Metro Ethernet switch that models DHCP relay agent configuration and operational statistics. It exposes configuration objects such as the relay server IP address and DHCP Option 82 information mode/policy, alongside statistics counters for relayed and error packets on both the server and client sides of the relay. Its primary monitoring value is software/service health: it lets an operator confirm the DHCP relay function is operating correctly and detect problems like missing or malformed Option 82 circuit ID information, bad circuit IDs, or packet errors indicating a misconfigured client or failing relay path. It builds on the standard IETF DHCP relay concepts (RFC 3046 Option 82) but is implemented as a Cisco enterprise MIB for this switch family. It is typically deployed in Metro Ethernet access networks where the ME1200 relays DHCP requests from subscriber ports to a centralized DHCP server. Engineers can download the ME1200-DHCP-RELAY-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ME1200-DHCP-RELAY-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

Cisco ME1200 Metro Ethernet switch

Monitoring Examples

An operator would poll me1200DhcpRelayStatisticsServerPacketsRelayed and ClientPacketsRelayed to confirm bidirectional relay traffic is flowing, and watch ServerPacketErrors / ClientPacketErrors for signs of a broken relay path. A spike in me1200DhcpRelayStatisticsBadCircuitId or MissingCircuitId would indicate a client or line card is failing to insert Option 82 information correctly, disrupting subscriber authentication. me1200DhcpRelayGlobalsServerIpAddress and GlobalsInformationPolicy reveal how the relay agent is configured to forward and tag requests.

What Can Be Monitored

DHCP relay packets forwarded
DHCP relay packet errors
Option 82 circuit ID errors
missing agent option counts
relay server configuration
relay information policy mode

Imported Objects

From CISCOME1200-MIB

me1200SwitchMgmt

OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

IpAddress
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

TEXTUAL-CONVENTION
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
me1200DhcpRelayMIB	1.3.6.1.4.1.9.9.815.1.55			This is a private version of the DHCP Relay MIB
me1200DhcpRelayMIBObjects	1.3.6.1.4.1.9.9.815.1.55.1
me1200DhcpRelayConfig	1.3.6.1.4.1.9.9.815.1.55.1.2
me1200DhcpRelayGlobals	1.3.6.1.4.1.9.9.815.1.55.1.2.1
T/F me1200DhcpRelayGlobalsMode	1.3.6.1.4.1.9.9.815.1.55.1.2.1.1	TruthValue	read-write	Global mode of DHCP relay. true(1) is to enable DHCP relay and false(2) is to disable it.
IP me1200DhcpRelayGlobalsServerIpAddress	1.3.6.1.4.1.9.9.815.1.55.1.2.1.2	IpAddress	read-write	Server IP address. This IP address is for DHCP server where the DHCP relay will relay DHCP packets to.
T/F me1200DhcpRelayGlobalsInformationMode	1.3.6.1.4.1.9.9.815.1.55.1.2.1.3	TruthValue	read-write	Indicates the DHCP relay information mode option operation. Possible modes are - Enabled: Enable DHCP relay information mode operation. When DHCP relay information mode operation is enabled, the agent inserts specific information (option 82) into a DHCP message when forwarding to DHCP server and removes it from a DHCP message when transferring to DHCP client. It only works when DHCP relay operation mode is enabled. Disabled: Disable DHCP relay information mode operation.
ME1 me1200DhcpRelayGlobalsInformationPolicy	1.3.6.1.4.1.9.9.815.1.55.1.2.1.4	ME1200DhcpRelayInformationPolicyType	read-write	Indicates the DHCP relay information option policy. When DHCP relay information mode operation is enabled, if the agent receives a DHCP message that already contains relay agent information it will enforce the policy. The 'Replace' policy is invalid when relay information mode is disabled.
me1200DhcpRelayStatus	1.3.6.1.4.1.9.9.815.1.55.1.3
me1200DhcpRelayStatistics	1.3.6.1.4.1.9.9.815.1.55.1.3.1
U32 me1200DhcpRelayStatisticsServerPacketsRelayed	1.3.6.1.4.1.9.9.815.1.55.1.3.1.1	Unsigned32	read-only	Packets relayed from server to client.
U32 me1200DhcpRelayStatisticsServerPacketErrors	1.3.6.1.4.1.9.9.815.1.55.1.3.1.2	Unsigned32	read-only	Errors sending packets to servers.
U32 me1200DhcpRelayStatisticsClientPacketsRelayed	1.3.6.1.4.1.9.9.815.1.55.1.3.1.3	Unsigned32	read-only	Packets relayed from client to server.
U32 me1200DhcpRelayStatisticsClientPacketErrors	1.3.6.1.4.1.9.9.815.1.55.1.3.1.4	Unsigned32	read-only	Errors sending packets to clients.
U32 me1200DhcpRelayStatisticsAgentOptionErrors	1.3.6.1.4.1.9.9.815.1.55.1.3.1.5	Unsigned32	read-only	Number of packets forwarded without agent options because there was no room.
U32 me1200DhcpRelayStatisticsMissingAgentOption	1.3.6.1.4.1.9.9.815.1.55.1.3.1.6	Unsigned32	read-only	Number of packets dropped because no RAI option matching our ID was found.
U32 me1200DhcpRelayStatisticsBadCircuitId	1.3.6.1.4.1.9.9.815.1.55.1.3.1.7	Unsigned32	read-only	Circuit ID option in matching RAI option did not match any known circuit ID.
U32 me1200DhcpRelayStatisticsMissingCircuitId	1.3.6.1.4.1.9.9.815.1.55.1.3.1.8	Unsigned32	read-only	Circuit ID option in matching RAI option was missing.
U32 me1200DhcpRelayStatisticsBadRemoteId	1.3.6.1.4.1.9.9.815.1.55.1.3.1.9	Unsigned32	read-only	Remote ID option in matching RAI option did not match any known remote ID.
U32 me1200DhcpRelayStatisticsMissingRemoteId	1.3.6.1.4.1.9.9.815.1.55.1.3.1.10	Unsigned32	read-only	Remote ID option in matching RAI option was missing.
U32 me1200DhcpRelayStatisticsReceiveServerPackets	1.3.6.1.4.1.9.9.815.1.55.1.3.1.11	Unsigned32	read-only	Receive DHCP message from server.
U32 me1200DhcpRelayStatisticsReceiveClientPackets	1.3.6.1.4.1.9.9.815.1.55.1.3.1.12	Unsigned32	read-only	Receive DHCP message from client.
U32 me1200DhcpRelayStatisticsReceiveClientAgentOption	1.3.6.1.4.1.9.9.815.1.55.1.3.1.13	Unsigned32	read-only	Receive relay agent information option from client.
U32 me1200DhcpRelayStatisticsReplaceAgentOption	1.3.6.1.4.1.9.9.815.1.55.1.3.1.14	Unsigned32	read-only	Replace relay agent information option.
U32 me1200DhcpRelayStatisticsKeepAgentOption	1.3.6.1.4.1.9.9.815.1.55.1.3.1.15	Unsigned32	read-only	Keep relay agent information option.
U32 me1200DhcpRelayStatisticsDropAgentOption	1.3.6.1.4.1.9.9.815.1.55.1.3.1.16	Unsigned32	read-only	Drop relay agent information option.
me1200DhcpRelayControl	1.3.6.1.4.1.9.9.815.1.55.1.4
T/F me1200DhcpRelayControlClearStatistics	1.3.6.1.4.1.9.9.815.1.55.1.4.1	TruthValue	read-write	The action to clear statistics. true(1) is to clear the statistics data. false(2), then, does nothing.
me1200DhcpRelayMIBConformance	1.3.6.1.4.1.9.9.815.1.55.2
me1200DhcpRelayMIBCompliances	1.3.6.1.4.1.9.9.815.1.55.2.1
me1200DhcpRelayMIBCompliance	1.3.6.1.4.1.9.9.815.1.55.2.1.1			The compliance statement for the implementation.
me1200DhcpRelayMIBGroups	1.3.6.1.4.1.9.9.815.1.55.2.2
me1200DhcpRelayGlobalsInfoGroup	1.3.6.1.4.1.9.9.815.1.55.2.2.1			A collection of objects suitable for bulk operations.
me1200DhcpRelayStatisticsInfoGroup	1.3.6.1.4.1.9.9.815.1.55.2.2.2			A collection of objects suitable for bulk operations.
me1200DhcpRelayControlInfoGroup	1.3.6.1.4.1.9.9.815.1.55.2.2.3			A collection of objects suitable for bulk operations.

RFC description

Manages DHCP relay configuration including relay mode and server IP settings for Cisco ME1200 switches.

Start monitoring Cisco ME1200 Metro Ethernet switch (DHCP relay agent) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download ME1200-DHCP-RELAY-MIB

What Is ME1200-DHCP-RELAY-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description