Cisco Small Business Pro SA 520W Administration Manual page 53

Networking
Configuring the WAN Connection
STEP 6
STEP 7
NOTE
Cisco SA 500 Series Security Appliances Administration Guide
The MTU (Maximum Transmit Unit) is the size of the largest packet that can be
sent over the network. The standard MTU value for Ethernet networks is usually
1500 Bytes. For PPPoE connections, it is 1492 Bytes. Unless a change is
required by your ISP, it is recommended that the MTU values be left as is.
If a MAC address source is required by your ISP, enter the following information in
the Router's MAC Address area:
• MAC Address Source: Typically, you use the unique 48-bit local Ethernet
address of the security appliance as your MAC address source. If your ISP
requires MAC authentication and another MAC address has been previously
registered with your ISP, you can enter a different MAC address to use for
this purpose.
- Use Default Address: Choose this option to use the default MAC
address.
- Use this computer's MAC address: Choose this option if you want to
use the MAC address of your computer as the MAC address source.
- Use This MAC Address: Choose this option if you want to enter a MAC
address that your ISP requires for this connection (sometimes called
MAC address cloning). Enter the MAC Address in the format
XX:XX:XX:XX:XX:XX where X is a number from 0 to 9 (inclusive) or an
alphabetical letter between A and F (inclusive), as in the following
example: 01:23:45:67:89:ab
Click Apply to save your settings, or click Reset to revert to the saved settings.
Next steps:
• If you are using the Getting Started (Basic) page, click Getting Started in
the menu bar, and then continue with the list of configuration tasks.
• To check the WAN status, click WAN > WAN Status in the navigation tree.
For more information, see
• If you need to create PPPoE profiles, click WAN > PPPoE Profiles in the
navigation tree. For more information, see
page 55.
• If you need to configure another ISP link, click Optional Port > Optional
Port Mode and choose WAN for the port mode. After saving your settings
on that page, click Optional Port > WAN to configure the WAN connection.
For more information, see
Viewing the WAN Status, page
Creating PPPoE Profiles,
Configuring the Optional WAN, page
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