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toh:buyerguide [2014/03/02 17:12]
megaman_player
toh:buyerguide [2014/05/15 19:39] (current)
danitool
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==== LAN ==== ==== LAN ====
-    * **How many [[wp>Network interface controller|NICs]]** does the [[wp>System on a chip]] incorporate? Common are **one** or **two**, very seldom more.\\ These are implemented as [[doc/hardware/SoC]]-integrated Ethernet-[[wp>Media access control|MAC]]-blocks, which are each connected over a [[wp>Media Independent Interface|xMII]] to a distinct [[wp>PHY (chip)]].+    * **How many [[wp>Network interface controller|NICs]]** does the [[wp>System on a chip]] incorporate? Common are **one** or **two**, very seldom more.\\ These are implemented as [[doc/hardware/SoC]]-integrated Ethernet-[[wp>Media access control|MAC]]-blocks, which are each connected over a [[wp>Media Independent Interface|xMII]] to a distinct [[wp>PHY (chip)]].\\ **''Note:''** Do not confuse the number of Ports with the number of NICs.
    * Which Ethernet-Layer-1 standard does the NIC/NICs support?\\ **BASE100-TX** (i.e. 100MBit/s, [[wp>Fast Ethernet]]) or\\ **BASE1000-T** (i.e. 1000MBit/s, [[wp>Gigabit Ethernet]])?     * Which Ethernet-Layer-1 standard does the NIC/NICs support?\\ **BASE100-TX** (i.e. 100MBit/s, [[wp>Fast Ethernet]]) or\\ **BASE1000-T** (i.e. 1000MBit/s, [[wp>Gigabit Ethernet]])?
    * Is there an **integrated Ethernet switch**?     * Is there an **integrated Ethernet switch**?
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==== Wireless ==== ==== Wireless ====
(Please consult the [[doc:howto:wireless.overview|Wireless Overview]]) (Please consult the [[doc:howto:wireless.overview|Wireless Overview]])
-  * How many [[wp>Wireless network interface controller|WNICs]]? Common are **one** or **two**.\\ These can be SoC-integrated, distinct chips and also [[wp>MiniPCI]]/[[wp>MiniPCIe]]-cards.+  * How many [[wp>Wireless network interface controller|WNICs]]? Common are **one** or **two**. These can be
 +    * SoC-integrated: this is commonly called WiSoC 
 +    * Onboard: the wifi chip is the same used in MiniPCI/e cards but soldered on the main PCB 
 +    * [[wp>MiniPCI]]: the wifi card can be extracted, and replaced by another different MiniPCI model 
 +    * [[wp>MiniPCIe]]: the wifi card can be extracted, and replaced by another different MiniPCIe model
  * Which substandards of the [[wp>IEEE 802.11]]-family shall the wireless hardware support? Most common ones are 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac and 802.11s   * Which substandards of the [[wp>IEEE 802.11]]-family shall the wireless hardware support? Most common ones are 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac and 802.11s
  * Capabilites: 1T1R, 2T2R, 3T3R or 2T3R ..   * Capabilites: 1T1R, 2T2R, 3T3R or 2T3R ..
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  * Do the current capabilities of the [[http://wireless.kernel.org/en/users/Drivers|Existing Linux Wireless drivers]] for your WNICs satisfy your requirements?   * Do the current capabilities of the [[http://wireless.kernel.org/en/users/Drivers|Existing Linux Wireless drivers]] for your WNICs satisfy your requirements?
  * Are the [[doc:hardware:antennae]] detachable? If so, you could replace them with ones with a better gain, or with (home-made) directional antennae.   * Are the [[doc:hardware:antennae]] detachable? If so, you could replace them with ones with a better gain, or with (home-made) directional antennae.
 +  * [[wp>FLOSS]] drivers: this is very important for a correct wifi performance/behavior. For years Broadcom didn't supply enough quality FLOSS drivers (or hardware specifications) and it seems won't ever happen, propietary wl drivers often causes crashes or incorrect behaviors, then avoid Broadcom's wifis. As recommended by many people, **Atheros or Ralink** wifis are probably the best choice.
==== Modem ==== ==== Modem ====
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  * Occasionally the computing power of the CPU proves to be a bottleneck. To compare you should have a look at the [[:doc:hardware:cpu|CPU]] included on with [[:doc:hardware:soc|SoC]]. Do not compare raw MHz, e.g. a MIPS 34KE@300MHz is in most scenarios faster then a MIPS 24K@400MHz.   * Occasionally the computing power of the CPU proves to be a bottleneck. To compare you should have a look at the [[:doc:hardware:cpu|CPU]] included on with [[:doc:hardware:soc|SoC]]. Do not compare raw MHz, e.g. a MIPS 34KE@300MHz is in most scenarios faster then a MIPS 24K@400MHz.
    * as you can see by referring to the [[doc:techref:flash.layout|flash layout]] with a total of 8MiB flash memory, you can use about 5MiB for own packages.     * as you can see by referring to the [[doc:techref:flash.layout|flash layout]] with a total of 8MiB flash memory, you can use about 5MiB for own packages.
 +
 +==== Cryptography ====
 +  * [[wp>Hardware_random_number_generator|TRNG]]: Most devices use a software random number generator. Only few are equiped with a true hardware random number generator, see [[http://wiki.openwrt.org/tag/trng?do=showtag&tag=TRNG|TRNG]] tag
 +  * [[doc/hardware/cryptographic.hardware.accelerators|Cryptographic Hardware Accelerators]]: routers equiped with these accelerators may bring you better speed transfers when you plan to use encrypted connections such as OpenVPN.
==== Ports ==== ==== Ports ====
-    * USB: connect a hub, harddiscs, network printers, ssds, usb sticks, UMTS modems, cameras, sound cards, etc. ->[[doc:howto:usb.overview]]+    * USB: connect a hub, harddiscs, ssds, usb sticks, UMTS modems, cameras, sound cards, etc. ->[[doc:howto:usb.overview]]
    * Serial: very useful for developers, limited uses for end users ->[[doc:hardware:port.serial]]     * Serial: very useful for developers, limited uses for end users ->[[doc:hardware:port.serial]]
    * JTAG: very useful for developers and also for end users  ->[[doc:hardware:port.JTAG]]     * JTAG: very useful for developers and also for end users  ->[[doc:hardware:port.JTAG]]
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===== Price comparison for currently purchasable hardware ===== ===== Price comparison for currently purchasable hardware =====
-==== Europe ==== 
Since Christmas 2011, geizhals offers a filter for devices supported by OpenWrt: Since Christmas 2011, geizhals offers a filter for devices supported by OpenWrt:
  * [[http://geizhals.at/?cat=wlanrout&sort=p&xf=758_OpenWrt#xf_top|Preisvergleich AT: WLAN-Router]]   * [[http://geizhals.at/?cat=wlanrout&sort=p&xf=758_OpenWrt#xf_top|Preisvergleich AT: WLAN-Router]]
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==== United States ==== ==== United States ====
-Amazon also lets you search by open by Open-WRT: +Amazon also lets you //search// for OpenWrt, but you cannot filter for OpenWrt support
-  * [[http://amzn.to/1dbqupL|Price comparison USA: Open-WRT routers]] +  * [[http://amzn.to/1mONYr0|Price comparison USA: OpenWrt routers]]
-  * [[http://amzn.to/1mONYr0|Price comparison USA: OpenWRT routers]]+
**''Note_1:''** The filter is not 100% perfect, be sure to double check a router before buying \\ **''Note_1:''** The filter is not 100% perfect, be sure to double check a router before buying \\
 +
 +
 +
===== Tags ===== ===== Tags =====
You could use the [[meta:tags]] to quickly find the devices with your desired features. Sadly :-( not many devices have been tagged so far. You could use the [[meta:tags]] to quickly find the devices with your desired features. Sadly :-( not many devices have been tagged so far.
-{{tag>GigabitEthernet DetachableAntenna USB2.0 USB 128RAM 64RAM 32Flash 16Flash 8Flash 802.11abgn 802.11abgn_simultan 802.11ac rechargeable_battery}}+  * {{tag>GigabitEthernet}}  
 +  * {{tag>DetachableAntenna}}  
 +  * {{tag>USB2.0 USB 2USB 3USB 4USB}} 
 +  * {{tag>512RAM 256RAM 128RAM 64RAM}} 
 +  * {{tag>256Flash 128Flash 64Flash 32Flash 16Flash 8Flash}} 
 +  * {{tag>802.11abgn 802.11abgn_simultan 802.11ac}} 
 +  * {{tag>rechargeable_battery}} 
 +  * {{tag>portable_router}} 
 +  * {{tag>ip_camera}} 
 +  * {{tag>TRNG crypto}}

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toh/buyerguide.1393776721.txt.bz2 · Last modified: 2014/03/02 17:12 by megaman_player