projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | |
| 2 | IP-Aliasing: | |
| 3 | ============ | |
| 4 | ||
| 5 | IP-aliases are additional IP-addresses/masks hooked up to a base | |
| 6 | interface by adding a colon and a string when running ifconfig. | |
| 7 | This string is usually numeric, but this is not a must. | |
| 8 | ||
| 9 | IP-Aliases are avail if CONFIG_INET (`standard' IPv4 networking) | |
| 10 | is configured in the kernel. | |
| 11 | ||
| 12 | ||
| 13 | o Alias creation. | |
| 14 | Alias creation is done by 'magic' interface naming: eg. to create a | |
| 15 | 200.1.1.1 alias for eth0 ... | |
| 16 | ||
| 17 | # ifconfig eth0:0 200.1.1.1 etc,etc.... | |
| 18 | ~~ -> request alias #0 creation (if not yet exists) for eth0 | |
| 19 | ||
| 20 | The corresponding route is also set up by this command. | |
| 21 | Please note: The route always points to the base interface. | |
| 22 | ||
| 23 | ||
| 24 | o Alias deletion. | |
| 25 | The alias is removed by shutting the alias down: | |
| 26 | ||
| 27 | # ifconfig eth0:0 down | |
| 28 | ~~~~~~~~~~ -> will delete alias | |
| 29 | ||
| 30 | ||
| 31 | o Alias (re-)configuring | |
| 32 | ||
| 33 | Aliases are not real devices, but programs should be able to configure and | |
| 34 | refer to them as usual (ifconfig, route, etc). | |
| 35 | ||
| 36 | ||
| 37 | o Relationship with main device | |
| 38 | ||
| 39 | If the base device is shut down the added aliases will be deleted | |
| 40 | too. | |
| 41 | ||
| 42 | ||
| 43 | Contact | |
| 44 | ------- | |
| 45 | Please finger or e-mail me: | |
| 46 | Juan Jose Ciarlante <jjciarla@raiz.uncu.edu.ar> | |
| 47 | ||
| 48 | Updated by Erik Schoenfelder <schoenfr@gaertner.DE> | |
| 49 | ||
| 50 | ; local variables: | |
| 51 | ; mode: indented-text | |
| 52 | ; mode: auto-fill | |
| 53 | ; end: |