
54 Mbps Wireless Router WGR614v8 User Manual
•You used a program to optimize MTU for performance reasons, and now you have connectivity or performance problems.
Note: An incorrect MTU setting can cause Internet communication problems such as the inability to access certain Web sites, frames within Web sites, secure login pages, or FTP or POP servers.
If you suspect an MTU problem, a common solution is to change the MTU size to 1400. If you are willing to experiment, you can gradually reduce the MTU size from the maximum value of 1500 until the problem goes away. Table
Table 5-1. Common MTU Sizes
MTU | Application |
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1500 | The largest Ethernet packet size and the default value. This is the typical setting for non- |
| PPPoE, |
| and switches. |
|
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1492 | Used in PPPoE environments. |
|
|
1472 | Maximum size to use for pinging. (Larger packets are fragmented.) |
|
|
1468 | Used in some DHCP environments. |
|
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1460 | Usable by AOL if you do not have large |
|
|
1436 | Used in PPTP environments or with VPN. |
|
|
1400 | Maximum size for AOL DSL. |
|
|
576 | Typical value to connect to |
|
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To change the MTU size:
1.In the main menu, under Advanced, select WAN Setup.
2.In the MTU Size field, enter a new size between 64 and 1500.
3.Click Apply to save the new configuration.
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