Specifications

EASTAR UHP-1000 SERIES SATELLITE ROUTER
INSTALLATION AND OPERATION MANUAL, V. 2.3
(SW VERSION 2.2.9)
© ROMANTIS 2010 24 www.romantis.com
Statistics can be seen using ―show interface ethernet‖ command.
EASTAR # sh in et
Ethernet interface is UP
Last U->D: never U->D transitions: 0
Last D->U: +00:00:04 Counters cleared: never
MAC: 46:13:44:89:16:98 Set: AUTO State: 100/Full|TX queue | 0 |
|-----+---- RX ----+---- TX ----+--------+------------|No buffer| 0 |
|Rate | 1419 | 147 |Bcasts | 37 |Collision| 0 |
|Bytes| 2551 | 1510 |CRC errs| 0 |16 colls.| 0 |
|Pkts.| 37 | 31 |Overruns| 0 |Underruns| 0 |
MAC: 00:12:34:56:1B:45 Set: AUTO State: 10/HD |TX queue | 0 |
MAC - Interface physical address (set by Manufacturer)
Set - Preset mode of communication between interface and the switch.
State - Current mode of communication with the switch.
TX - Queue length (in bytes) for transmission.
|-----+---- RX ----+---- TX ----+--------+------------|No buffer| 0 |
Two rows RX and TX in subsequent lines show statistics of reception and transmission.
No buffer - Number of packets reset from the queue due to excessive interface traffic in transmit mode.
|Rate | 102 | 0 |Bcasts | 4127 |Collision| 0 |
Speed - Current traffic rate across interface.
Bcasts - Number of received broadcast packets.
Collision - Number of collisions in transmit half-duplex mode.
|Bytes| 315057 | 0 |CRC errs| 0 |16 colls.| 0 |
Bytes - Number of bytes (including Ethernet heading), that have passed through interface.
CRC errs - Number of packet checksum errors in receive mode.
16-colls - Number of multiple collisions. Means serious overload on the local network segment or
problems with the switch.
|Pkts.| 4127 | 0 |Overruns| 0 |Underruns| 0 |
Pkts - Number of packets that have passed through interface.
Overruns - Number of occasions when processor did not have enough time to process the received packet.
Underruns - Number of occasions when processor did not have enough time to prepare data to send.
All counters can be reset using “clear counters ethernet” command.
2.4.1 ARP Protocol
ARP protocol assists devices on the Ethernet segment to communicate using IP-protocol.
Addressing in Ethernet differs from IP-addressing and ARP makes it possible to obtain peer
MAC addresses in compliance with their IP-addresses. The protocol is transparent for the
user and does not require any configuration.
ARP Tables control commands:
arp timeout 30-3600 - ARP table purge interval
Sets interval (in seconds) between cleanups ARP Table. If IP-address is set on one device in
the network and then the device is disconnected from it and the same address is set on
another device, the devices may fail to communicate with this other device until their ARP
Tables are cleaned and updated.
clear arp-table – Clean ARP Table.
show arp – Print current content of ARP Table:
Example: