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advanced-mac [2022/02/16 14:39] – Added "MAC Address Notes" head, moved current issues under it hogwild | advanced-mac [2023/04/30 16:30] (current) – [How Default WAN MAC Addresses are Derived] -Resize first screenshot, change screenshot captions to "MAC Address" hogwild | ||
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====== MAC Address ====== | ====== MAC Address ====== | ||
- | The MAC Address menu has settings to let you electronically change (or " | + | The MAC Address menu has settings to let you electronically change (or " |
- | A MAC address is called a Universally Administered Address (UAA) when it's set by the manufacturer or a locally-administered addresses (LAA) when it is assigned by a System Administrator. The first three octets (group of eight bits) are the Organizationally Unique Identifier (OUI). The OUI is a 24-bit number that identifies the manufacturer, | + | A MAC address is called a Universally Administered Address (UAA) when it's set by the manufacturer or a locally-administered addresses (LAA) when it is assigned by a System Administrator. |
- | \\ | + | |
- | {{mac_address_format.png}} | + | The first three octets (group of eight bits) are the Organizationally Unique Identifier (OUI). The OUI is a 24-bit number that identifies the manufacturer, |
- | + | ||
- | \\ | + | |
For common device names in FreshTomato, | For common device names in FreshTomato, | ||
- | \\ | + | ===== How Default WAN MAC Addresses are Derived ===== |
- | **Note about Default WAN MAC Address:** Starting with 2021.8, | + | Since release |
- | FreshTomato sets wanX MAC Addresses as follows: | + | FreshTomato |
* WAN => eth0 MAC + (decimal) 16 [in releases 2021.7 and older: eth0 = MAC + 1 (decimal value)] | * WAN => eth0 MAC + (decimal) 16 [in releases 2021.7 and older: eth0 = MAC + 1 (decimal value)] | ||
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* WAN4 => eth0 MAC + (decimal) 19 | * WAN4 => eth0 MAC + (decimal) 19 | ||
- | For example, on a router with LAN hardware MAC Address of 2C: | + | For example, on a router with LAN hardware MAC Address of 2C: |
\\ This is further illustrated in the following screenshots. | \\ This is further illustrated in the following screenshots. | ||
- | \\ **A WAN IP as Configured in FreshTomato 2021.8 and newer:** | + | \\ **A WAN MAC Address, |
- | {{: | + | {{: |
- | **A WAN IP as Configured in FreshTomato 2021.7 and older:** | + | **A WAN MAC Address, |
{{:: | {{:: | ||
- | |||
- | Note for **FreshTomato 2021.7 and older: **picture shows the default MAC Address calculated and set by the GUI. FreshTomato initial MAC Address (after erase all data in NVRAM memory thorough) will be different. (Differences will be fixed with FT 2022.1 and newer)\\ | ||
\\ | \\ | ||
+ | |||
+ | For **FreshTomato 2021.7 and older: **the above image shows the default MAC Address calculated and set in the GUI. FreshTomato will initially display a dfifferent MAC Address (after an "erase all data in NVRAM memory thorough" | ||
**WAN Port:** In this field, you can enter any valid MAC Address to be assigned to the WAN interface. | **WAN Port:** In this field, you can enter any valid MAC Address to be assigned to the WAN interface. | ||
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\\ | \\ | ||
- | ==== MAC Address Notes ===== | ||
- | |||
- | Issues / Problems caused by changing wireless MAC address | ||
+ | ===== MAC Address Notes ===== | ||
- | Changing the first 3 octets of the MAC address can cause some issues, see | + | Until at least release 2021.8, FreshTomato has a problem caused by changing |
- | https:// | + | |
+ | Changing the first 3 octets of the MAC Address can cause some issues such as wireless interfaces to drop. For details, please see: \\ [[https:// | ||