Airport Utility and Network

The only remaining thing to go over is the Airport Utility and general network functionality. I’m not going to go into very much detail at all about the network side of things (routing performance, etc.) since honestly nothing has changed here—the board and SoC are the exact same.

To start, all configuration is done through Airport Utility on OS X and Windows. There’s no web-based portal like just about every other attached network device. On all of Apple’s WiFi products, Airport Utility is the exclusive point of configuration. It pops up a list of devices, including unconfigured ones without the need to connect over ethernet. Admittedly that’s a nice touch that makes configuration super easy.

There’s either the choice to have a wizard set everything up, or you can do it manually. The first page is summary, which lists some basic information, status, and high level information. Status mirrors the front panel LED which either glows green or amber depending on whether things are working fine.

For example, when the Time Capsule starts overheating the LED blinks amber and pops up an alert. The utility can also monitor for when problems happen.

The rest of configuration is honestly pretty straightforward. Each of the radios (2.4 and 5GHz) can be set to its own SSID, there are a wide selection of radio modes and the ability to set channels manually. As an aside, if you’re going to set the 5GHz channel manually, select one over 149 to get maximum power and avoid dynamic frequency selection chanels in the US.

There’s honestly everything you’d want from a consumer level router or wireless AP, and a couple of extras like RADIUS server support and guest network creation.

If you run the devices as a router, you can also port forward, configure the DHCP server (including static addresses assigned to specific MACs), and all the usual fixings. That said, some of the options are a bit barebones compared to more enthusiast open source packages, but it gets the job done.

In addition to sharing disks, the Airports can also share printers attached using USB. I’ve experimented around and even a USB hub plugged in with devices attached to it works, so you’re not limited to just a single port.

One of the features Airport Utility has that a lot of other consumer devices don’t is a nice way of viewing the status of attached wireless clients, including a little graph that continually tracks. The utility will show each client MAC address, signal, noise level, rate, and what network mode they’re using. It’s an incredibly useful diagnostic tool that’s honestly a step beyond what Tomato or even DD-WRT report for clients.

The Windows version of Airport Utility looks a bit like a program from the Windows XP days, which is about par but not unforgivable. Everything inside works the same way, except this version forgoes the client signal graph and instead just presents a table with data. You can still do everything else, however.

Update: Our own Saumitra Bhagwat pointed out to me that on iOS 5 Beta, you can actually use an Airport Utility (lite) built into the WiFi settings page to configure a new Airport Extreme or Time Capsule. You have to be in the initial setup state (reset completely to defaults) to see it, but when in range, a "setup an airport base station" window appears, allowing this lite level of configuration. Depending on your existing setup, it'll offer some suggestions as well (for example, as I'm attached to a current Extreme, it offers to extend by default).

Another small but useful thing is that both devices support SNMP, so you can do stuff like track traffic on all the internal interfaces on the device using software like MRTG or Cacti (both of which I’m a huge fan of). There’s even a MIB for how many wireless clients are joined. If you’re not into using SNMP yourself, there’s a simple utility out there called Airport Flow that gives you a per-interface graph and the total number of clients attached.

 

You need to specify the device IP address and what interface to monitor, so you might have to snmpwalk the airport (snmpwalk -c public [ip addy]) and look for the line with each interface name:

IF-MIB::ifDescr.1 = STRING: mgi0
IF-MIB::ifDescr.2 = STRING: mgi1
IF-MIB::ifDescr.3 = STRING: bwl0
IF-MIB::ifDescr.4 = STRING: bwl1
IF-MIB::ifDescr.5 = STRING: lo0
IF-MIB::ifDescr.6 = STRING: wlan0
IF-MIB::ifDescr.7 = STRING: wlan1
IF-MIB::ifDescr.8 = STRING: bridge0

But there’s nothing complicated about that.

Honestly, for routing and firewall, the Time Capsule and Airport Extreme get the job done but without much flair or ability to tweak low level things like I’d like to see. I generally use either a pfSense embedded x86 box, WRT54G-TM running Tomato, or a WRT-600 running DD-WRT for NAT routing, firewall, and DHCP myself, just because those options offer a ton of fine grained control over the network side, and then an Airport Extreme for WLAN. That said, the Time Capsule or Airport Extreme can do all of that in one box.

Disk Performance - Airport Extreme vs. Time Capsule Conclusions and Final Thoughts
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  • Brian Klug - Sunday, August 7, 2011 - link

    Yeah, I should note that right now idle seems to be around 8-9 watts without much change.

    -Brian
  • jalin2 - Monday, August 8, 2011 - link

    I'm in the market to get a new router and was set on getting the E4200. Now I think I'm going to hold off and wait until your router comparison article. Any idea on timeframe when that'll be released?
  • jackwong - Sunday, August 14, 2011 - link

    I would rather go with Apple, the only good Linksys router I have is the WRT54. I also have the e2500 few months ago, I can't believe a 2011 router doesn't has gigabyte ports... and it has connection problem everyday...

    I would rather go with Apple Extreme base station unless the e4200 is way cheaper.
  • melgross - Monday, August 8, 2011 - link

    I've had a lot of Linksys routers over the years, stupidly, because every one died. That includes some commercial models. I will NEVER use another Linksys product again.

    I've got one Extreme, and two Expresses, and have never had a problem with them. As the review says, they just work.

    I've got an old house, built in 1925. Most interior walls are brick. All the walls and ceilings have .75" wood over the brick, with gal steel mesh over that, with .75" mortar, and a .25" layer of plaster over that. The damn thing is as close to a Faraday cage as anyone will ever live in. I've removed some of that when re-doing the kitchen and downstairs bathroom as well as the two bathrooms upstairs by having everything stripped to the beams and replaced with double .5" Sheetrock, but still...
  • Guspaz - Monday, August 8, 2011 - link

    Perhaps some mention should be made of the fact that Apple advertises the drive in the Time Capsule as a "server-grade hard drive".

    You do mention that it's very much a consumer disk (in fact, the most "consumer" you can get since it's not even a black or RAID edition), but Apple is really billing the thing as server-grade, which is false advertising.
  • jwoelich - Monday, August 8, 2011 - link

    "Fortunately, a source inside Western Digital was willing to explain matters; "If you enter in the drive number on NewEgg you're going to see it come up as a desktop drive. That platform is actually built on a lot of other products for a lot of different OEMs. And the specs could change depending on whatever program we're building for. Needless to say Apple has very stringent requirements that are very specific to them and very unique to them, and that drive has actually been developed and is unique for that Apple product. That unique Apple logo, and what we call 'to the right of the dash,' if you will, indicate that this drive is for a very particular partner to us and this drive is dedicated to that particular audience. You could not buy this same drive at NewEgg or Amazon."

    When we asked whether the variation of the WD20EARS drive is rated for a 1-million-hour MTBF, our source confirmed that it was: "We don't spec our desktop drives with MTBF because our customers don't purchase in that manner, but this particular drive for this particular OEM with these unique requirements does meet those specifications."

    Western Digital says otherwise.
  • repoman27 - Monday, August 8, 2011 - link

    lowlymarine did mention it in a comment two days ago, to which I pointed out that for price per GB and performance per watt the Caviar Green is tough to beat, and therefore perfect for servers. Just considering how many Google uses, I would be surprised if there is another line of drives more deployed in servers at the moment than Caviar Green.

    Not all "servers" are designed for crazy amounts of IOPS, massive queue depths, or incredibly high availability. For backup or redundancy, which is what the Time Capsule is marketed for, you want big, cheap and low-power.

    No offense, jwoelich, but although the quote may be legitimate, I have a seriously hard time buying that line of utter crap. We're pretty much down to a three horse race in the storage arena, and just like Intel or AMD might bin things differently or cater to large OEMs in various ways, they basically just pump out a small range of identical products by the millions. There are no "magical drives" that are perfect for servers but not sold by Newegg. The way I read it, Apple had a very stringent range of specifications, to which a bog standard Caviar Green drive happens to adhere perfectly (i.e. low price per GB and low power requirements.)
  • jwoelich - Tuesday, August 9, 2011 - link

    I don't see where anyone stated anything being 'magical', just that if you were to go onto Newegg, you couldn't just order one of these specific drives. Now, does that mean that there is more to it than Western Digital simply taking any WD Green drive, testing it to conform with the criteria set forth by Apple, then throw on a new sticker? Or did WD design/modify a product specifically to meet that criteria? More likely, WD crafted a Frankendrive using the criteria Apple set forth, and used the bare minimum of higher quality components that would more likely ensure that criteria was met, which was probably nothing more than power consumption, size, speed and a greater MTBF.
  • LoneWolf15 - Monday, August 8, 2011 - link

    "Some more searching revealed the solution—pin 20 (wireless disable) needs to be taped over to signal the card that the wireless disable switch (which doesn’t exist, since this is the WAN port) is in the on position. A quick surgical application of tape, and the card worked perfectly—take that, Lenovo security. As an aside, what a completely pointless and trivial barrier this is—the Mini PCIe standard (and moreover WiFi notebook cards themselves with U.FL connectors) are designed to be completely and absolutely interchangeable. The notion that this provides any added security (when the adjacent slot is completely unguarded) or—even more absurd, convenience—is nothing short of a surrealist notion."

    Lenovo isn't the only one. HP also does the exact same thing; they whitelist cards in the BIOS, so that only their branded version of Intel's (or Broadcom's) wireless cards work.

    I don't think security has anything to do with it. I think two factors are involved --1) that they don't want to support any other wireless cards than their own, and 2) that they want you to buy from them, establishing vendor lock-in.
  • Dug - Monday, August 8, 2011 - link

    There are also modified BIOS' out there that disable the whitelist which is a lot easier than trying to tape a small pin.

    If the laptop has a 2nd pci slot, which is usually reserved for wlan card, you can use this for the wireless card becuase the BIOS doesn't look at that slot.

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