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AT-WR4500 Series - IEEE 802.11abgh Outdoor Wireless Routers 33
RouterOS v3 Configuration and User Guide
full-duplex (yes | no) - whether transmission of data occurs in two directions simultaneously
rate (10 Mbps | 100 Mbps | 1 Gbps) - the actual data rate of the connection
status (link-ok | no-link | unknown) - status of the interface, one of the:
link-ok - the card is connected to the network
no-link - the card is not connected to the network (cable is not plugged in or faulty)
unknown - the connection is not recognized (if the card does not report connection status)
See the IP Addresses and ARP section of the manual for information how to add IP addresses to the
interfaces.
Example
[admin@AT-WR4562] interface ethernet> monitor ether1,ether2
status: link-ok link-ok
auto-negotiation: done done
rate: 100Mbps 100Mbps
default-cable-setting: standard standard
4.2.4 Troubleshooting
Description
Interface monitor shows wrong information
In some very rare cases it is possible that the device driver does not show correct information, but it
does not affect the NIC's performance (of course, if your card is not broken)
4.3 Wireless Interfaces
D o c u m e n t r e v i s i o n :
2 . 2 ( T u e J u l 1 8 1 4 : 5 3 : 5 8 G M T 2 0 0 6
A p p l i e s t o :
V 2 . 9
4.3.1 General Information
Summary
This manual discusses management of the Atheros chipset based wireless interfaces of the AT-WR4500
Series wireless routers that comply with IEEE 802.11 set of standards. These interfaces use radio waves
as a physical signal carrier and are capable of data transmission with speeds up to 108 Mbps (in 5GHz
turbo-mode).
RouterOS can operate wireless interfaces as wireless clients (station mode), wireless bridges (bridge
mode), wireless access points (ap-bridge mode), and for antenna positioning (alignment-only mode).
RouterOS provides a complete support for IEEE 802.11a, 802.11b and 802.11g wireless networking
standards. There are several additional features implemented for the wireless networking in RouterOS -
WPA (Wi-Fi Protected Access), WEP (Wired Equivalent Privacy), software and hardware AES
encryption, WDS (Wireless Distribution System), DFS (Dynamic Frequency Selection), Alignment mode
(for positioning antennas and monitoring wireless signal), VAP (Virtual Access Point), ability to disable
packet forwarding among clients, Nstreme wireless transmission protocol and others.
The Nstreme protocol is proprietary (i.e., incompatible with other vendors) wireless protocol aimed to
improve point-to-point and point-to-multipoint wireless links. Advanced version of Nstreme, called
Nstreme2 works with a pair of wireless interfaces (Atheros AR5210 and newer MAC chips only) - one
for transmitting data and one for receiving.
Benefits of Nstreme protocol:
• Client polling. Polling reduces media access times, because the card does not need to ensure the air
is "free" each time it needs to transmit data (the polling mechanism takes care of it)
• Very low protocol overhead per frame allowing super-high data rates