Before an ARP is done, however, the PC would see if the other host is
on the same subnet. If not, it would look for a route to the other's
network.
In the case of /24 mask, they are on different subnets, so no ARP would
be done.
However, IIRC, there is a trick that can work, at least on PCs -- if
both PCs have their default route set to their own interface IP address,
then the ARP *is* done and they can talk.
Someone else'll remember the details better than I.
-------------------------------------------------
Tks | <mailto:[EMAIL PROTECTED]>
BV | <mailto:[EMAIL PROTECTED]>
Sr. Technical Consultant, SBM, A Gates/Arrow Co.
Vox 770-623-3430 11455 Lakefield Dr.
Fax 770-623-3429 Duluth, GA 30097-1511
=================================================
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Sheahan, Ryan
Sent: Wednesday, January 31, 2001 11:24 AM
To: 'Fowler, Joey '; '[EMAIL PROTECTED] '
Subject: RE: Ethernet switching
These are my thoughts,
If the switch was right out of the box, the stations could ping each
other
no matter what subnet mask you were using. The reason being, they are
located in the same broadcast domain, vlan1. This is the default vlan
for
all switched ports at this time. The first station would arp for the
other,
it would get a response because they are on the same layer 2 broadcast
domain and they could speak directly using the switch.
Switches by default with no mls, are layer two devices. They have no
concept of IP. They make decision based on layer 2 MAC addresses and
the
ports they are connected to. If these stations were in different vlans,
the
situation would change. You then have created two broadcast domains and
in
order for the devices to talk, a router or mls entry would be needed.
Someone please correct me if I am wrong.
-----Original Message-----
From: Fowler, Joey
To: [EMAIL PROTECTED]
Sent: 1/31/01 10:52 AM
Subject: RE: Ethernet switching
Depends on the subnet mask you are using, for instance
142.102.3.1 with a subnet mask of 255.255.0.0
142.102.2.1 also with a subnet of 255.255.0.0
The 2.1 and 3.1 would be on the same subnet, however if you have a
different
subnet mask I don't think it would work.
Joey
-----Original Message-----
From: alexs [mailto:[EMAIL PROTECTED]]
Sent: Saturday, September 09, 2000 7:42 AM
To: [EMAIL PROTECTED]
Subject: Ethernet switching
Hello everyone,
I have a question that probably will sound silly but here it is:
Suppose that you take a new 2924 out of the box and you plug in two
PC's.
You assign address, for example, 142.102.2.1 to the first one and
142.102.3.1 to the second one.There is not any router in this small
network.142.102.2.1 tries to ping 142.102.3.1.The question is: will
142.102.2.1 get a reply and why?
Thanks
alexs
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