07-25-2015, 02:23 PM
(This post was last modified: 07-31-2015, 02:56 AM by slugdude.
Edit Reason: Spellingz
)
IMPORTANT: PLEASE READ.
The layer two protocol is simply a lead bit, a two bit number that codes for which connection the switch should use, then the whole layer three packet, including header, inside it's 'data' section. However, you will NEVER have to deal with layer two, as it is only used within a switch, and is not actually sent between them. The difference between intOREnet and The Internet is that the layer three packet is interpreted at each switch, rather than only once. The hubs and switches all expect to receive the intOREnet layer 3 protocol. Only one will ever be supported, probably. It goes as follows:
![[Image: JfUtlh9.jpg]](http://i.imgur.com/JfUtlh9.jpg)
The '1's must always be 1s.
From bit 10 (d) onwards, this is actually irrelevant to the switches' operation. It is this protocol that MUST be used when a device sends a packet to it's hub, and this same, unaltered (mostly, see below) packet is received by the recipient at the other end.
When sending a packet, the source address does not need to be correct. The hub will make the source address correct for you, so it should be left as 00000000.
I hope this is a little clearer.
The layer two protocol is simply a lead bit, a two bit number that codes for which connection the switch should use, then the whole layer three packet, including header, inside it's 'data' section. However, you will NEVER have to deal with layer two, as it is only used within a switch, and is not actually sent between them. The difference between intOREnet and The Internet is that the layer three packet is interpreted at each switch, rather than only once. The hubs and switches all expect to receive the intOREnet layer 3 protocol. Only one will ever be supported, probably. It goes as follows:
The '1's must always be 1s.
From bit 10 (d) onwards, this is actually irrelevant to the switches' operation. It is this protocol that MUST be used when a device sends a packet to it's hub, and this same, unaltered (mostly, see below) packet is received by the recipient at the other end.
When sending a packet, the source address does not need to be correct. The hub will make the source address correct for you, so it should be left as 00000000.
I hope this is a little clearer.