Re: [tipc-discussion] Request: Unable to config second node onsame machine

[<nar...@wi...>]

Allan wrote:
>
>As Jon Maloy stated in his reply, if you want a node to have redundant
>TIPC interfaces to Ethernet they have be on totally distinct Ethernet
>segements (or independent LANs, if you prefer). You can picture this as:
>
>              |---<1.1.1>---|
>              |             |
>              |---<1.1.2>---|
>             |             |
>              |---<1.1.3>---|
>            eth0          eth1
>             LAN           LAN
>
>While you might be able to get some redundancy by eliminating the
>distinct segments requirement, as in the following case:
>
 >             |---<1.1.1>---|
>              |             |
>              |---<1.1.2>---|
>              |             |
>              |---<1.1.3>---|
>              |             |
>              +-------------+
>                single LAN
>
>you wouldn't be protected in the case that a single defective Ethernet
>interface starts babbling away on the LAN and corrupts all traffic being
>sent on the LAN. Having the requirement for totally isolated LANs means
>that you're protected even in this case.

valuable information. thanks.
let me give a picture of the same:

scenario 1: single Ethernet interface from eth0 

  Machine-1                                  Machine-2
|------------- |                             |---------------|
|  <1.1.1>  |                              |<1.1.2>     |
|     eth0     |<-------------------->| eth0          |
---------------                               ----------------
Connection established between (<1.1.1>eth0; <1.1.2>eth0) working fine

scenario 2: single Ethernet interface from eth1

Machine-1                                   Machine-2
|------------- |                             |---------------|
|  <1.1.1>  |                              |<1.1.2>     |
|     eth1     |<-------------------->| eth1          |
---------------                               ----------------
Connection established between (<1.1.1>eth1; <1.1.2>eth1) working fine

scenario 3: two Ethernet interfaces eth0, eth1

Machine-1                                   Machine-2
|------------- |                             |---------------|
|  <1.1.1>  |                             |<1.1.2>     |
|     eth0     |       ???                 | eth0          |
|     eth1     |       ???                 | eth1          |
---------------                               ----------------

In Scenario 3, what are the probabilities for effective ways of communicating  Machines by TIPC.

May i know the backup plan for the connection, i mean if connection lost from one Ethernet interface what could be the ways to re-establishing connection curious about the Link Changeover mechanism. 

Best regards
Naresh Kamboju

>Regards,
>Al