All MIBs › ROHC-RTP-MIB › rohcRtpContextState
rohcRtpContextState
Module: ROHC-RTP-MIB
OID (symbolic): ROHC-RTP-MIB::rohcRtpContextState
OID (numeric): 1.3.6.1.2.1.114.1.1.1.3
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-only
Description: State of the context as defined in RFC 3095. States initAndRefresh(1), firstOrder(2), and secondOrder(3) are states of compressor contexts, states noContext(4), staticContext(5) and fullContext(6) are states of decompressor contexts.
What is rohcRtpContextState?
This value reports the current compression state of a ROHC (Robust Header Compression) context, distinguishing compressor states (initAndRefresh, firstOrder, secondOrder) from decompressor states (noContext, staticContext, fullContext). An admin monitoring a link carrying compressed RTP/voice traffic uses this to confirm the context has converged to full compression (fullContext) rather than staying stuck re-sending full headers (initAndRefresh), which would mean the bandwidth savings from ROHC aren't being realized. For example, rohcRtpContextState reading fullContext(6) on a decompressor context confirms headers are being fully compressed, while a state stuck at noContext(4) on a poor radio link would explain why RTP header overhead isn't being reduced.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.114.1.1.1.3 snmpwalk -v2c -c public <target> ROHC-RTP-MIB::rohcRtpContextState
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.114.1.1.1.3.1 snmpget -v2c -c public <target> ROHC-RTP-MIB::rohcRtpContextState.1
Start monitoring vendor-neutral, standards-based MIB, cellular/mobile access router or gateway performing header compression with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the ROHC-RTP-MIB::rohcRtpContextState OID value, configure state conditions and alerts, and monitor any vendor-neutral, standards-based MIB, cellular/mobile access router or gateway performing header compression from a single console.
OID Breakdown
Upper-level ancestors (6 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.2 | mgmt | APERTUS-NPG-MIB |
| 1.3.6.1.2.1 | mib_2 | AXON-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.2.1.114 | rohcRtpMIB | ROHC-RTP-MIB |
| 1.3.6.1.2.1.114.1 | rohcRtpObjects | ROHC-RTP-MIB |
| 1.3.6.1.2.1.114.1.1 | rohcRtpContextTable | ROHC-RTP-MIB |
| 1.3.6.1.2.1.114.1.1.1 | rohcRtpContextEntry | ROHC-RTP-MIB |
| 1.3.6.1.2.1.114.1.1.1.3 | rohcRtpContextState | ROHC-RTP-MIB |