All MIBs › CISCOSB-DHCPv6-RELAY
Category: Protocol: DHCP, Technology: IPv6, Vendor: Cisco
Description: Manages DHCPv6 relay agent configuration and statistics on Cisco Small Business devices.
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What Is CISCOSB-DHCPv6-RELAY?
CISCOSB-DHCPv6-RELAY is a Cisco Small Business private-enterprise MIB that manages DHCPv6 relay agent configuration on SMB switches and routers, letting an administrator control which interfaces relay DHCPv6 client requests and to which server destinations. It exposes primarily configuration data: per-interface relay enablement, global relay destination addresses, and interface-specific destination mappings, along with row-status objects that indicate whether each configured entry is active. While not a hardware-fault MIB, monitoring the row-status and destination tables lets an operator confirm that DHCPv6 relay is correctly provisioned and operational on each interface, which is effectively a software/configuration-health check for IPv6 client provisioning. It builds on standard interface indexing conventions from IF-MIB (ifIndex) and mirrors the relay-agent concepts found in IETF DHCPv6 standards. It is typically used on Cisco Small Business switches and routers that relay DHCPv6 requests from LAN clients to centralized DHCPv6 servers. Engineers can download the CISCOSB-DHCPv6-RELAY file directly to load it into their MIB browser.
IPNetwork Monitor allows you to monitor SNMP objects defined in CISCOSB-DHCPv6-RELAY. 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 Small Business switches
- Cisco Small Business routers
Monitoring Examples
An administrator can check rlDhcpv6RelayInterfaceListTable to see which ifIndex values have DHCPv6 relay enabled and confirm rlDhcpv6RelayInterfaceListRowStatus is active. The rlDhcpv6RelayDestinationsGlobalTable lists configured global relay destination IPv6 addresses and their output interfaces, while rlDhcpv6RelayInterfaceDestinationsTable maps specific interfaces to specific destinations. If IPv6 clients on a VLAN stop receiving addresses, the admin would check these tables for a missing or inactive row-status entry.
What Can Be Monitored
- DHCPv6 relay-enabled interfaces
- global relay destination IPv6 addresses
- per-interface relay destination mappings
- relay entry row status (active/notInService)
Imported Objects
From CISCOSB-DHCPv6
| rlDhcpv6Relay | OBJECT-IDENTITY |
From INET-ADDRESS-MIB
| InetAddress | |
| InetAddressIPv6 | |
| InetAddressType |
From SNMPv2-SMI
| MODULE-IDENTITY | |
| OBJECT-TYPE | |
| Unsigned32 |
From SNMPv2-TC
| DisplayString | |
| MacAddress | |
| RowStatus | |
| TEXTUAL-CONVENTION | |
| TruthValue |
OIDs
RFC description
DHCPv6 relay agent configuration for Cisco Small Business switches.
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