Cisco WS-CE500 Administration Manual page 56

Networking
Configuring the Optional WAN
STEP 7
STEP 8
STEP 9
Cisco SA500 Series Security Appliances Administration Guide
• MTU Size: If you chose Customer for the MTU Type, enter the custom MTU
size in bytes.
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.
Next steps:
• If you are using the Getting Started (Advanced) page, click Getting Started
> Advanced to continue with the list of configuration tasks.
• To check the WAN status, click WAN > WAN Status. For more information,
see Viewing the WAN Status, page
• Recommended: To configure auto-rollover, load balancing, and failure
detection for your ISP links, click Optional Port > WAN Mode. For more
information, see
Detection, page
39.
Configuring Auto-Rollover, Load Balancing, and Failure
57.
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