Afar NX-2E1, Руководство оператора

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NetCrossing Gateway NX-2E1/T1 Operator’s Manual
4-12
If during normal operation you experience too many underrun events, you may want to increase
this value further.
Automatic mode: If the jitter value is set to zero the unit performs the process described above
automatically: when the link is established the unit sets the jitter buffer to its maximum value
(300 ms), and then measures the network jitter. At the end of approximately 12 seconds the
unit sets the jitter buffer to an appropriate value based on that measurement. You may examine
the final value with the
show command. Note that the automatic mode bases the final jitter
parameter value on only 12 seconds of measurements. If the network jitter varies significantly
over time you will need to adjust this value manually.
capacity-kbps=100..20000
If the throughput in the WAN is limited, and the equipment between the two gateways (radios,
bridges or routers in the WAN) does not distinguish between the LAN and serial traffic, it will
discard packets indiscriminately. Therefore a burst of LAN traffic could cause errors in the
serial link.
With this parameter you can specify the throughput capacity of the WAN in kilobits per second.
The gateway will first allocate enough of the WAN capacity to the serial TDM data, and limit
the traffic from the LAN such that the combined (serial plus LAN) traffic will not exceed the
specified capacity.
When you use Afar radios with the gateway, set the capacity to the default of 20000. The Afar
radios recognize the packets as coming from the LAN or serial ports and delay or discard the
LAN packets that would exceed the radio throughput.
speed=auto-10 or 10hdx or 10fdx or 100hdx or 100fdx or auto
Allows selecting the WAN ethernet port speed between 10/100 Mbps, half / full duplex, or auto
negotiate.
The auto-10 -setting forces the speed to 10Mbps but negotiates the half or full duplex. The
auto setting negotiates both the speed and duplex to the fastest configuration supported by the
other devices on the WAN.
Examples:
>wan type=bridge peer =170145 jitter=20
4.5 Internet Protocol (IP) Management Commands
The IP Management commands configure the gateway IP protocol parameters which allow the
gateway to be monitored and configured through Telnet and SNMP. Refer to section 6 for a more
detailed explanation on those two applications.