H3C-SNA-DLSW-EXT-MIB

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › H3C-SNA-DLSW-EXT-MIB

Organization: Huawei-3com Technologies co.,Ltd.

Last Updated: 2005-07-20

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

Description: H3C MIB extending DLSw (Data Link Switching) with H3C-specific SNA/NetBIOS bridging configuration objects.

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 H3C-SNA-DLSW-EXT-MIB?

H3C-SNA-DLSW-EXT-MIB is an H3C-specific extension MIB that adds H3C-proprietary configuration objects to standard Data Link Switching (DLSw), the protocol (RFC 1795, RFC 2024, RFC 2166) used to bridge legacy IBM SNA/NetBIOS traffic over IP networks. It exposes per-peer/node configuration such as vendor ID, local IP address/type, connection priority, pacing-window sizes, keep-alive interval, and various timeout values (connection, local/remote pending, SNA cache). This is primarily a configuration/session-health monitoring MIB rather than hardware sensor data: operators use the timeout and keep-alive settings to verify DLSw peer connections are tuned correctly and stable, and unexpected connection drops correlating with h3cdeNodeConnTimeout or h3cdeNodeKeepAliveInterval settings can indicate a DLSw peering/session problem. It explicitly depends on and extends the base DLSw protocol standards defined in RFC 1795, RFC 2024, and RFC 2166. It is typically deployed on H3C routers/switches bridging legacy SNA/NetBIOS mainframe traffic over a modern IP WAN, common in enterprises with legacy IBM mainframe or AS/400 connectivity requirements. Engineers can download the H3C-SNA-DLSW-EXT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in H3C-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

  • H3C routers/switches bridging legacy IBM SNA/NetBIOS traffic (DLSw)

Monitoring Examples

Polling h3cdeNode-scoped objects such as h3cdeNodeLocalAddr, h3cdeNodePriority, and h3cdeNodeVendorID identifies and characterizes each DLSw peer node's configuration. Checking h3cdeNodeConnTimeout, h3cdeNodeLocalPendTimeout, and h3cdeNodeRemotePendTimeout against actual peer-connection behavior helps diagnose a DLSw session that repeatedly times out during establishment. h3cdeNodeKeepAliveInterval and h3cdeNodeMaxPacingWindow/h3cdeNodeInitPacingWindow tuning affects how quickly a dead peer is detected and how much data can be in flight, both relevant to legacy SNA session stability over the IP backbone.

What Can Be Monitored

  • DLSw peer node configuration (vendor ID, local address, priority)
  • connection/keep-alive timeouts
  • pacing window sizes
  • SNA cache timeout
  • peer connection stability
Imported Objects

From DLSW-MIB

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

From HUAWEI-3COM-OID-MIB

h3cCommonOBJECT-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 h3cdeTConnOperRecvPkts OID:

Select an H3C router/switch bridging legacy IBM SNA/NetBIOS traffic (DLSw) 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 h3cdeTConnOperRecvPkts 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 protocol extensions for H3C routers managing SNA/APPN traffic.

Start monitoring H3C router/switch bridging legacy IBM SNA/NetBIOS traffic (DLSw) 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 H3C-SNA-DLSW-EXT-MIB