From: Sean C (upp_and_upp@hotmail.com)
Date: Thu Nov 15 2007 - 14:35:01 ART
Hi Group,
If I have a 3550 with Vlan 1:
int vlan 1
ip address 10.1.1.254 255.255.255.0
ip address 10.1.2.254 255.255.255.0 secondary
Interface f0/1 is in Vlan1 and has a host connected (host1) with IP 10.1.1.1
/24
Interface f0/2 is also in Vlan1 and has a host connected (host2) with IP
10.1.2.1 /24
If host1 sends a local broadcast (10.1.1.255), will host2 receive this since
both IP subnets are in the same layer 2 segment?
This leads me into other areas, like what if it's an IP broadcast
(255.255.255.255) or layer 2 broadcast (f.f.f) or if host2 is across a couple
of 3550s, with each switch's SVI in both IP subnets. I'm thinking that host2
will receive the frame (what host2 does with the frame is a different story).
I'm just curious to see how the packets are switched.
I looked pretty hard on-line, but can't find a definitive answer. Here's some
things I found for guidance (buyer beware):
http://www.groupstudy.com/archives/cisco/199912/msg00535.html
http://books.google.com/books?id=77h9SA94kasC&pg=PA53&lpg=PA53&dq=%22secondar
y+address%22+broadcast+interface&source=web&ots=ZK2MDq5iey&sig=niwz8-D79xoTWM
Jt97wCCinJfcQ
http://tcpmag.com/forums/forum_posts.asp?tid=1383&pn=10
Even found a decent post from Howard Berkowitz (I miss his posts):
http://www.groupstudy.com/archives/cisco/200306/msg01434.html
I don't have immediate access to a LAN sniffer or I'd bang on this myself.
Curious to hear the group's thoughts. Thanks in advance,
Sean C. CCIE #17085
This archive was generated by hypermail 2.1.4 : Sat Dec 01 2007 - 06:37:30 ART