Today at 11:16pm, Scot L. Harris wrote:
On Tue, 2004-01-20 at 22:01, James Knott wrote: [snip]
Are you sure about that? There's only the 2 addresses, as there's no need for a broadcast or network address.
In fact, I just checked on my notebook. Ifconfig shows a mask of 255.255.255.255 for ppp0, an inet address, a P-t-P address and no broadcast address. Eth0 shows an inet address, broadcast address and a mask of 255.255.255.0.
Maybe you'd better check your facts again. Fire up a ppp link and tell me what you see.
Think about it. A point to point link needs two addresses in the subnet.
192.168.0.0/32 gives you:
I think you wanted to say "192.168.0.0/30" here.
subnet address of 192.168.0.0 broadcast address of 192.168.0.3 host 1 address of 192.168.0.1 host 2 address of 192.168.0.2
Have setup hundreds of these on frame relay circuits and private line circuits.
We may be talking two different things here. The point to point protocol I believe uses a 32 bit subnet to say the entire address can be assigned.
There is no requirement on a point-to-point link that both ends be in the same subnet. For that matter, there is no requirement that either the near or far interface have an IP address at all. Anything the local host sends to the near end interface is only going to go to the far end interface--at which point further routing must happen. Cisco has been doing that for years, even on frame relay circuits. Jim