portTopNUtilization
CISCO-STACK-MIB ·
.1.3.6.1.4.1.9.5.1.20.2.1.4
Object
column
Integer32
The utilization of the port in the system.
The utilization is computed in the following
methods:
Ethernet Utilization: (If Full Duplex, multiply by 2)
10 Mbps I/O-pkts * (9.6 + 6.4) + (0.8 * I/O-Bytes)
Ethernet Util = -----------------------------------------
Interval * 10,000
where 9.6 is interframe gap of Ethernet
6.4 is preamble of Ethernet
10,000 is 10Mbps
100 Mbps I/O-pkts * (96 + 64) + (8 * I/O-Bytes)
Ethernet Util = --------------------------------------
Interval * 1,000,000
1000 Mbps I/O-pkts * (96 + 64) + (8 * I/O-Bytes)
Ethernet Util = --------------------------------------
Interval * 10,000,000
All other I/O-pkts * (9.6 + 6.4) + (0.8 * I/O-Bytes)
Ethernet Util = ------------------------------------------
Interval * N * 1,000
(where N is N Mbps)
Token Ring Utilization:
(Assuming that Octets is from AC byte through FCS)
4 Mbps Pkts * 32 + (8 * Octets)
Token Ring Util = 100 * ------------------------
Interval * 4,000,000
where 32 is bits in SD, ED, FS and IFG
16 Mbps Pkts * 64 + (8 * Octets)
Token Ring Util = 100 * ------------------------
Interval * 16,000,000
where 64 is bits in SD, ED, FS and IFG
FDDI Utilization:
I/O-Pkts * (64 + 8 + 32 + 16) + (8 * I/O-Bytes)
FDDI Util = ----------------------------------------------
Interval * 100,000,000
where 64 is Preamble of FDDI,
8 is the Start Delimiter (SD) of FDDI,
32 is the CRC, and
16 is the End of Frame Sequence (EFS) of FDDI.
Context
- MIB
- CISCO-STACK-MIB
- OID
.1.3.6.1.4.1.9.5.1.20.2.1.4- Type
- column
- Access
- readonly
- Status
- current
- Parent
- portTopNEntry
- Table
- portTopNTable
- Siblings
- 9
Syntax
Integer32
Values & Constraints
Object Constraints
range: 1-65535
Related Objects
Sibling Objects
| Object | Type | Syntax | OID |
|---|---|---|---|
| portTopNIndex An index that uniquely identifies an entry in
the portTopN table among those in the same report.
This index is between 1 and N, where N is the
portTopNGrantedSize of ports with th… | column | Integer32 | .1.3.6.1.4.1.9.5.1.20.2.1.1 |
| portTopNBufferOverFlow The number of buffer overflow of the port in
the system. | column | SNMPv2-SMICounter32 | .1.3.6.1.4.1.9.5.1.20.2.1.10 |
| portTopNModuleNumber The module number of the port counter data
entry. | column | Integer32 | .1.3.6.1.4.1.9.5.1.20.2.1.2 |
| portTopNPortNumber The port number of the port counter data entry. | column | Integer32 | .1.3.6.1.4.1.9.5.1.20.2.1.3 |
| portTopNIOOctets The Input and Output octets of the port in the
system. | column | SNMPv2-SMICounter64 | .1.3.6.1.4.1.9.5.1.20.2.1.5 |
| portTopNIOPkts The Input and Output packets of the port in the
system. | column | SNMPv2-SMICounter64 | .1.3.6.1.4.1.9.5.1.20.2.1.6 |
| portTopNIOBroadcast The Input and Output broadcast packets of the
port in the system. | column | SNMPv2-SMICounter64 | .1.3.6.1.4.1.9.5.1.20.2.1.7 |
| portTopNIOMulticast The Input and Output multicast packets of the
port in the system. | column | SNMPv2-SMICounter64 | .1.3.6.1.4.1.9.5.1.20.2.1.8 |
| portTopNInErrors The Input error packets of the port in the
system. | column | SNMPv2-SMICounter32 | .1.3.6.1.4.1.9.5.1.20.2.1.9 |