HPN-ICF-SNA-DLSW-EXT-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › HPN-ICF-SNA-DLSW-EXT-MIB

Last Updated: 2005-07-20

Category: SNA and Legacy Protocols, Vendor: H3C/HH3C, Vendor: HP/HPE

Description: Manages Data Link Switching (DLSw) SNA circuit bridging extensions on HP/Comware enterprise WAN routers.

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What Is HPN-ICF-SNA-DLSW-EXT-MIB?

HPN-ICF-SNA-DLSW-EXT-MIB is a vendor MIB from HP/H3C's Comware (ICF) platform extending Data Link Switching (DLSw) management for bridging SNA/legacy traffic over IP, per RFC 1795, RFC 2024, and RFC 2166. It exposes configuration data in the tunneling/protocol category: per-DLSw-node parameters such as pacing windows, keep-alive interval, connection timeout values, and per-connection (TConn) settings, alongside vendor and addressing identification for each node. Its monitoring role is focused on the software/protocol status of DLSw tunnels -- watching hpnicfdeNodeKeepAliveInterval, connection timeout objects, and TConn entries reveals whether SNA circuit-emulation tunnels are staying alive and correctly paced, which is critical for detecting stalled or dropped legacy SNA sessions over an IP backbone. It explicitly depends on and extends the base DLSw standard defined in RFC 1795/2024/2166, layering vendor-specific tuning objects on top. It is typically deployed on HP/H3C Comware WAN routers bridging legacy SNA/mainframe traffic across a modern IP network. Engineers can download the HPN-ICF-SNA-DLSW-EXT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in HPN-ICF-SNA-DLSW-EXT-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

  • HP/H3C Comware WAN routers running DLSw for SNA bridging

Monitoring Examples

An administrator would poll hpnicfdeNodeKeepAliveInterval and the timeout objects hpnicfdeNodeConnTimeout, hpnicfdeNodeLocalPendTimeout, and hpnicfdeNodeRemotePendTimeout for a given DLSw node to confirm the tunnel is configured with expected liveness parameters. Checking hpnicfdeTConn entries alongside hpnicfdeNodeInitPacingWindow/hpnicfdeNodeMaxPacingWindow would reveal a pacing-window mismatch or a hung TConn session causing SNA traffic to back up or the DLSw peer connection to flap.

What Can Be Monitored

  • DLSw node keep-alive interval
  • connection/pending timeouts
  • pacing window (initial/max)
  • SNA cache timeout
  • TConn connection state
  • node local/remote address
Imported Objects

From DLSW-MIB

LFSize
MacAddressNC
TAddress
dlswTConnConfigEntryOBJECT-TYPE
dlswTConnOperEntryOBJECT-TYPE
dlswTConnTcpConfigEntryOBJECT-TYPE

From HPN-ICF-OID-MIB

hpnicfCommonOBJECT-IDENTITY

From INET-ADDRESS-MIB

InetAddress
InetAddressType

From RFC1213-MIB

ifIndex

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks

From SNMPv2-TC

RowStatus

How to Use in IPNetwork Monitor

Example using hpnicfdeTConnOperRecvPkts OID:

Select an HP/H3C Comware WAN router running DLSw for SNA bridging (extended config) 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 hpnicfdeTConnOperRecvPkts 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. The number of Switch-to-Switch Protocol (SSP) messages received on this tcp transport connection. 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

Data Link Switching (DLSw) extensions for managing DLSw-specific protocol enhancements and TCP connections.

Start monitoring HP/H3C Comware WAN router running DLSw for SNA bridging (extended config) 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 HPN-ICF-SNA-DLSW-EXT-MIB