All MIBs › AT-EPSRv2-MIB
Organization: Allied Telesis, Inc
Last Updated: 2011-07-07
Category: VLAN and Bridging, Vendor: Allied Telesis
Description: Provides enhanced EPSR v2 ring protection configuration and fault notification on Allied Telesis network switches.
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What Is AT-EPSRv2-MIB?
AT-EPSRv2-MIB is a vendor-specific SNMP module from Allied Telesis defining managed objects for EPSR (Ethernet Protection Switched Ring) version 2, a ring-based Layer 2 network resiliency protocol used on Allied Telesis switches. It models per-domain EPSR configuration and state, converting the protocol's ring-domain variables into an indexed table so multiple EPSR domains on a single switch can be managed and monitored independently. Its core monitoring value is Layer 2 resiliency status -- ring/domain state (which node is acting as master, whether the ring is complete or a failure has been detected) and port role reveal whether ring protection is healthy or has failed over due to a link/hardware fault. It also defines notifications for EPSR domain state changes, and depends on Allied Telesis's underlying EPSR concepts and the general interface/bridge MIB model for the ports involved. It is deployed on Allied Telesis switches forming resilient Ethernet rings in metro, campus, or industrial network topologies. Network engineers evaluating or troubleshooting this functionality can download the AT-EPSRv2-MIB file directly to load it into their MIB browser.
IPNetwork Monitor allows you to monitor SNMP objects defined in AT-EPSRv2-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
- Allied Telesis network switch
Monitoring Examples
No specific object names were available for this instance beyond the module's general description, but based on the stated per-domain table design, an operator would typically check each EPSR domain's ring/master state and port role to confirm it is in its expected "complete" ring state. A domain reporting a "failed" or unexpected ring state, combined with an EPSR state-change trap, would indicate a break in the ring requiring physical link or hardware investigation.
What Can Be Monitored
- EPSR domain ring state
- master/transit node role
- ring port blocking/forwarding status
- ring failure/recovery events
Imported Objects
From AT-SMI-MIB
| DisplayStringUnsized | |
| modules | OBJECT-IDENTITY |
From IF-MIB
| InterfaceIndex |
From SNMPv2-SMI
| MODULE-IDENTITY | |
| NOTIFICATION-TYPE | |
| OBJECT-TYPE |
From SNMPv2-TC
| TEXTUAL-CONVENTION | |
| TruthValue |
OIDs
RFC description
Manages Ethernet Protection Switched Ring (EPSR) version 2 on Allied Telesis switches.
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