S5-ETH-REDUNDANT-LINKS-MIB

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › S5-ETH-REDUNDANT-LINKS-MIB

Organization: Nortel Networks

Last Updated: 2004-11-03

Category: Avaya BayStack Ethernet Management

Description: Manages Nortel BayStack redundant Ethernet link configuration and failover state.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) 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.

What Is S5-ETH-REDUNDANT-LINKS-MIB?

S5-ETH-REDUNDANT-LINKS-MIB is a Nortel/Avaya BayStack MIB for configuring and monitoring redundant Ethernet link pairs used for uplink high availability. It exposes per-port redundancy capability, mode, and operational status, along with the operational status of the remote/paired port. Its monitoring value is fault and failover detection: operational status objects reveal when a redundant link pair has failed over, while fault and mode-change counters show how often a link has flapped, which can indicate a flaky physical connection. It builds on the base port model shared with S5-ETHERNET-COMMON-MIB within the same BayStack MIB family. It is typically deployed on BayStack switches configured with redundant uplinks for network resiliency. Engineers can download the S5-ETH-REDUNDANT-LINKS-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in S5-ETH-REDUNDANT-LINKS-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

  • Nortel/Avaya BayStack (S5000-series) switches with redundant Ethernet uplinks

Monitoring Examples

An admin polls s5EnRedPortTable/s5EnRedPortEntry, keyed by s5EnRedPortBrdIndx and s5EnRedPortPortIndx, to read s5EnRedPortOperStatus and s5EnRedPortRemoteOperStatus and detect when a redundant link pair has failed over; s5EnRedPortFaults and s5EnRedPortModeChanges counters reveal how often the redundant link has flapped, suggesting an unstable physical connection.

What Can Be Monitored

  • redundant port operational status
  • remote port operational status
  • redundancy mode configuration
  • fault count
  • mode change count
  • fault select mode
Imported Objects

From S5-ETHERNET-MIB

s5EnCfgOBJECT-IDENTITY

From S5-TCS-MIB

TimeIntervalSec

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks

How to Use in IPNetwork Monitor

Example using s5EnRedPortFaults OID:

Select a Nortel/Avaya BayStack switch as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type s5EnRedPortFaults into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. It reports a count of local or remote faults on this port. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.
OIDs

RFC description

Manages Ethernet redundant link status and control for Nortel 5000 series switches with failover capabilities.

Start monitoring Nortel/Avaya BayStack switches 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 S5-ETH-REDUNDANT-LINKS-MIB