High speed 5GHz network - 11n

This article needs more data and better formating

Here are the results from a quick test using two WAR-1a systems. Note that we performed the test through the systems, between two large Intel i7 desktops. Connection Tracking on both WAR-1a systems has been disabled (important to achieve full throughput), and the network is routed.

WLM200N5-26 2x2 HT40, 5Ghz,

Connection Tracking disabled, routed, v3 v1.5.16.2 PC (iperf client) ----x---- WAR-1a (Client) -- ( ~~25 ft~~ )-- WAR-1a(AP) ----x---- PC (iperf server)

[SUM] 0.0-10.2 sec 108 MBytes 88.4 Mbits/sec

---

WLM200N5-26 2x2 HT20, 5Ghz,

Connection Tracking disabled, routed, v3 v1.5.16.2 PC (iperf client) ----x---- WAR-1a (Client) --( ~~25 ft~~ )-- WAR-1a(AP) ----x---- PC (iperf server)

[SUM] 0.0-10.2 sec 106 MBytes 87.3 Mbits/sec

---

The following are between an Alix.3C (client), and a prototype AR7161 600MHz w/ GigE as the AP

both running v3 v1.5.16.2 Alix.3C (Client, iperf client) --( ~~25 ft~~ )-- Prototype(AP) ----GigE---- PC (iperf server) The throughput test was taken from the Alix console to circumvent the 10/100 Ethernet. All tests were done with Connection tracking being enabled on the AP, except for the last 2x2 HT40 test which has it disabled.

• 1x1 11A HT20

[SUM] 0.0-10.1 sec 60.3 MBytes 50.2 Mbits/sec

• 2x2 11A HT20

[SUM] 0.0-10.1 sec 115 MBytes 96.2 Mbits/sec

• 1x1 11A HT40

[SUM] 0.0-10.1 sec 134 MBytes 112 Mbits/sec

• 2x2 11A HT40

[SUM] 0.0-10.0 sec 208 MBytes 175 Mbits/sec

---

x4000 to x4000

[ 11] 0.0-10.0 sec 28.4 MBytes 23.8 Mbits/sec

laptop to pc on each side of exact same link

[ 3] 0.0-10.0 sec 21.9 MBytes 18.3 Mbits/sec and [ 4] 0.0-10.0 sec 31.7 MBytes 26.6 Mbits/sec

Just finished some new testing between an alix (single ethernet, 500MHz), and a war-1a (300MHz)

Test layout: PC (starutil client) --- alix (cpe) -- war-1a (ap) -- PC (starutil server)

WPA2 / PSK security in use

• 11NA HT40+ 2x2: 11,100KB/sec (limited by 10/100 ethernet)
• 11NA HT40+ 1x1: 7,100KB/sec
• 11NA HT20 2x2: 6,900KB/sec
• 11NA HT20 1x1: 5,500KB/sec

The throughput test does not increase the system load on either the alix or war-1a, both sitting around 1% (idle ssh session)

X86-PC(GigE ether) to X86-PC(GigE ether)

It is two IBM NetVista Towers, running the X86-PC Version, with Compex WLM200N5-26 Cards, and 30dBi DualPol Solid Dishes. It's a short link, under a KM.

Link shows 300Mbit, but sometimes drops to 270Mbit for a few seconds.

• Performance is great - about 19,000KB / second through this link with an HT40+ Channel, since the PC's have Gbit Ethernet, and that's true, uncompressed data, so that's very, very fast. That's almost 3x the throughput we got on an 802.11a Turbo link.

WRAP (266MHz)

WRAP (266MHz) caps out around 3,300KB/sec and 90+ CPU load. Still not too bad considering their age.

XSCALE 266MHz (X2000) and XSCALE 533MHz test

Test layout: PC (starutil client) --- x2000 (cpe) -- war-1a (ap) -- PC (starutil server)

WPA2 / PSK security in use

11NA HT40+ 2x2: 4,200KB/sec 11NA HT40+ 1x1: 3,800KB/sec 11NA HT20 2x2: 3,200KB/sec 11NA HT20 1x1: 2,800KB/sec

System load scales proportionately with the throughput. HT40+ 2x2 is ~80 - 100%, HT20 1x1 is ~35%

XSCALE systems do not scale well with, nor designed for 11n cards, and do not perform as well as their successors.

UPDATE: XSCALE 533 (X4000) performs almost identically to it's 266MHz counterpart, with only marginal throughput gains.

Maximum ranges

• 11a: 36.29 miles
• 11b: 65.64 miles (but limited to 32.82 via configuration, will be fixed soon)
• 11g: 32.82 miles
• 11a ht20: 36.29 miles
• 11g ht20: 32.82 miles
• 11a ht40: 18.14 miles (11a turbo is the same)
• 11g ht40: 16.41 miles (11g turbo is the same)