All MIBs › CASCADE-MIB › pportRecvClock
pportRecvClock
Module: CASCADE-MIB
OID (symbolic): CASCADE-MIB::pportRecvClock
OID (numeric): 1.3.6.1.4.1.277.1.4.2.1.7
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-only
Description: The receive clock source. This object works in cooperation with pportXmitClock.
The following are the various values for different clock source types:
Type Clock Source pportRevClock pportXmitClock { pportEntry 7 } { pportEntry 8 }
V.35 DCE ............ 0 0 or UIO LoopTime DCE ... 3 0 DTE ............ 1 2 Direct Trunk ... 1 0
T1 or Loop Timed ..... 1 1 E1 Internal ....... 2 2 External ....... don't care 3
What is pportRecvClock?
This reports which clock source this physical port is using to receive data, for example DCE, DTE, loop-timed DCE, or direct trunk on a V.35/UIO port, and its value must be interpreted together with pportXmitClock per the table in the description. Getting the receive clock source wrong on a serial port is a classic cause of bit errors or link flaps that look like a cabling problem but are actually a timing mismatch between the two ends of the circuit. A V.35 port showing pportRecvClock of 1 (DTE) paired with a far-end device also configured as DTE would produce no clock at all, since one side must supply DCE timing.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.277.1.4.2.1.7 snmpwalk -v2c -c public <target> CASCADE-MIB::pportRecvClock
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.277.1.4.2.1.7.1 snmpget -v2c -c public <target> CASCADE-MIB::pportRecvClock.1
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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 |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.277 | cascade | CASCADE-MIB |
| 1.3.6.1.4.1.277.1 | cascfr | CASCADE-MIB |
| 1.3.6.1.4.1.277.1.4 | pport | CASCADE-MIB |
| 1.3.6.1.4.1.277.1.4.2 | pportTable | CASCADE-MIB |
| 1.3.6.1.4.1.277.1.4.2.1 | pportEntry | CASCADE-MIB |
| 1.3.6.1.4.1.277.1.4.2.1.7 | pportRecvClock | CASCADE-MIB |