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====== Miscellaneous ====== | ====== Miscellaneous ====== | ||
- | In this menu, you can tweak some secondary settings. These settings rarely need to be modified. If you change them, make sure you understand the consequences of the changes. | + | In this menu, you can tweak some secondary, less critical |
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- | **Boot Wait Time * :** This is the time period during which a router | + | **Boot Wait Time * :** the time period during which you can access |
- | {{: | + | This refers |
- | \\ {{: | + | In rare circumstances, |
- | CTF lets bridges use an alternative forwarding method to Store and Forward frames. Enabling CTF may improve speeds on Internet plans that offer speeds above 100 Mb/second. CTF is usually necessary to achieve peak speeds on plans that allow 200 Megabits/ | + | \\ |
- | With CTF enabled, the router starts to send out transmission frames as soon as it receives its destination. However, | + | {{: |
- | When you have CTF disabled, the router | + | Only 10Mbps and 100Mbps speeds can be forced. For 1Gpbs, leave it at Autonegotiate. Not all models support this feature. |
+ | |||
+ | (Default: Autonegotiate). | ||
+ | |||
+ | \\ {{: | ||
+ | |||
+ | CTF lets bridges use an alternative forwarding method for storing/ | ||
+ | |||
+ | With CTF enabled, the router starts to send transmission frames as soon as the full packet header has been received. However, it relies on the client to tell it whether the data is corrupted for resend. This restriction can cause problems with a few common home uses. | ||
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+ | \\ | ||
+ | |||
+ | **Enabling CTF disables QoS and Bandwidth Limiter**. **It can also cause issues for IPv6 tunneling protocols, **like 6in4 Static. This is because the switching part of the packet bypasses parts of the standard Linux iptable chains. | ||
+ | |||
+ | With CTF disabled, the router | ||
+ | |||
+ | When this happens: | ||
* The holding period may require more of the router' | * The holding period may require more of the router' | ||
- | * WAN-to-LAN performance | + | * WAN-to-LAN performance |
- | * On ARM devices, you can expect performance in the range of 200 to 400 Mb/s. | + | |
- | CTF/FastNAT is support | + | \\ |
+ | |||
+ | CTF/FastNAT is supported | ||
* ARM Routers (like the RT-AC68U, RT-AC3200, R7000) support CTF. | * ARM Routers (like the RT-AC68U, RT-AC3200, R7000) support CTF. | ||
* MIPS RT-N routers (like the E4200v1, RT-N16) can use Broadcom FastNAT | * MIPS RT-N routers (like the E4200v1, RT-N16) can use Broadcom FastNAT | ||
- | * FastNAT is a similar function to forward at accelerated speeds. | ||
* MIPS RT-AC routers (like the RT-AC66U) do not support CTF or FastNAT. | * MIPS RT-AC routers (like the RT-AC66U) do not support CTF or FastNAT. | ||
- | | + | |
- | The default | + | On ARM devices, you can expect performance in the range of 200 to 400 Mb/s with CTF enabled. |
+ | |||
+ | \\ **Enable Jumbo Frames:** lets you increase the maximum frame size on the LAN. (Default: Disabled). | ||
+ | |||
+ | The default Jumbo Frames | ||
+ | |||
+ | This feature is supported only in 1000 Mb/s mode. Also, gigabit switches use more memory when this feature is enabled. This can affect performance, | ||
+ | |||
+ | \\ | ||
- | The jumbo frames feature is only supported in 1000 Mbit/s mode. Also, a gigabit switch uses more memory when this feature is enabled. This will influence system performance, | + | **Jumbo Frame Size:** iIf enabled, this value overrides default frame size. |
- | **Jumbo Frame Size: | + | If disabled, default frame size is 2 Kbytes. (Default: off). Generally, enable Jumbo Frames if you frequently transfer large files within your LAN. To function, all devices must support Jumbo Frames. You should also standardize the packet size across all LAN devices. |
- | Generally, enable Jumbo Frames only if you frequently transfer large files within your LAN. To function, all devices must support | + | It is best to leave this disabled unless |
- | You are strongly advised to leave this disabled unless you have specific requirements for it. Venturing into Jumbo Frames means you'll have to deal with fragmentation of Internet traffic, unless the end device supports Path MTU Discovery. Users often find that the limited performance benefits of Jumbo Frames is not worth the time and effort needed to tune and troubleshoot it. | + | Not all hardware models support |
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