FOUNDRY-SN-SWITCH-GROUP-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsFOUNDRY-SN-SWITCH-GROUP-MIB

Organization: Brocade Communications Systems, Inc.

Last Updated: 2013-10-25

Category: VLAN and Bridging, Vendor: Foundry/Brocade

Description: Brocade/Foundry proprietary MIB for switch group management covering VLANs, MAC tables, STP, and port configuration.

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What Is FOUNDRY-SN-SWITCH-GROUP-MIB?

FOUNDRY-SN-SWITCH-GROUP-MIB is a Brocade/Foundry proprietary MIB for managing switch-group-level Layer 2/3 features on Foundry (later Brocade) Ethernet switches, covering VLAN configuration, MAC address (forwarding database) tables, spanning tree port state, and switch-wide operating modes. It exposes configuration data such as Layer 3 switching mode, IP multicast mode, default configuration mode, and switch aging time, alongside per-VLAN, per-port, and FDB table entries. It supports monitoring device operational status through objects like snPortStpSetAll (spanning-tree port states) and the FDB table (snFdbTableCurEntry), which reveal port blocking/forwarding state and MAC learning activity, useful for diagnosing loops or connectivity issues. This kind of FOUNDRY-SN-SWITCH-GROUP-MIB SNMP monitoring is commonly paired with the standards-based BRIDGE-MIB to cross-check spanning-tree and forwarding-database state on the same switch. It is a Foundry/Brocade enterprise MIB with no dependency on external standards MIBs beyond basic SNMPv2-SMI conventions, though it parallels functionality found in the standards-based BRIDGE-MIB. It is deployed on Foundry/Brocade enterprise Ethernet switches (e.g. FastIron, BigIron series) in campus and data-center networks.

IPNetwork Monitor allows you to monitor SNMP objects defined in FOUNDRY-SN-SWITCH-GROUP-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

  • Ruckus (CommScope) ICX 8200 (current) — successor to Foundry/Brocade FastIron switching
  • Ruckus ICX 7550 (current) — stackable enterprise switch

Monitoring Examples

An administrator checks snSwGroupOperMode and snSwGroupIpL3SwMode to confirm whether the switch group is running in the expected Layer 2 or Layer 3 switching mode after a configuration change. Polling snFdbTableCurEntry reveals current MAC address table entries, and an unexpectedly rapid churn combined with snSwGroupSwitchAgeTime settings can indicate a topology loop; issuing snFdbTableStationFlush clears stale entries. snPortStpSetAll and snVLanGroupVlanCurEntry are polled together to verify a given port's spanning-tree state matches its intended VLAN membership.

What Can Be Monitored

  • Layer 2/3 switching mode
  • IP multicast mode
  • MAC/FDB table entries
  • switch MAC aging time
  • spanning-tree port state
  • VLAN membership per port
Imported Objects

From FOUNDRY-SN-AGENT-MIB

DisplayString
MacAddress

From FOUNDRY-SN-ROOT-MIB

switchOBJECT-IDENTITY

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero
ifIndexOBJECT-TYPE

From P-BRIDGE-MIB

EnabledStatus

From SNMPv2-SMI

Counter32
Counter64
Gauge32
Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using snSwIfStatsInUtilization OID:

Select a Brocade/Foundry FastIron/BigIron Ethernet 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 snSwIfStatsInUtilization 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 the input network utilization on this interface, in hundredths of a percent, averaged over a 5-minute interval. 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 an INTEGER-type OID, Value bounds is the most useful condition here — trigger an alert if utilization exceeds 80%, since sustained high inbound utilization often precedes latency and packet loss. Click Finish to create the monitor; you can adjust any parameter later.

See also: snVLanGroupVlanCurEntry

OIDs

RFC description

Brocade (formerly Foundry Networks) MIB for managing switch group objects on SnSwitch family devices and related Brocade equipment.

Start monitoring Brocade/Foundry FastIron/BigIron Ethernet switch (VLAN/FDB/STP) 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 FOUNDRY-SN-SWITCH-GROUP-MIB