10-24-2012
It is on the same subnet.
Theoretically yes, broadcast ping should work, but many common operating systems and hardware bridges block or ignore broadcast ping -- or any ping -- as a matter of course now.
I can see how it could get the pinger's MAC into other people's ARP tables, but can't see see how broadcast ping gets other MAC's into my ARP table when they don't reply.
10 More Discussions You Might Find Interesting
1. Cybersecurity
How does ARP take care of uniqueness of physical addresses?
How does an ISP allocate a MAC address when I do not have an NIC( Network interface Card)? (1 Reply)
Discussion started by: ManishSaxena
1 Replies
2. Solaris
Dear all,
We are testing two of our servers for mq series connectivity. The scenario is, when one machine is shutting down it's services there are some scripts that do a dns update, which removes the ip address and relates it to the ip address of the other node on our dns server, and the update... (7 Replies)
Discussion started by: earlysame55
7 Replies
3. IP Networking
Does ARP Request packet Contains MAC Address of dest during broadcast?
I found It So...
When i captured ARP Req Pkts on ethereal...
Rgds
-Meti (1 Reply)
Discussion started by: ashokmeti
1 Replies
4. HP-UX
I was checking nettl output for a unstable telnet to my server. this is part of output:
###
***********************************STREAMS/UX*******************************@#%
Timestamp : Sun Jun 22 EETDST 2008 22:14:47.492899
Process ID : Subsystem ... (4 Replies)
Discussion started by: xramm
4 Replies
5. IP Networking
I'm running an arp -an on a Solaris 10 box. We're using IPMP. One of the systems is not able to see a host on the same network. The only difference between the two systems (one is having a problem, the other isn't) at least so far is the output of arp:
# arp -an | grep 224.55
e1000g5... (1 Reply)
Discussion started by: BOFH
1 Replies
6. Red Hat
Dear All
i have a linux proxy server which has RHEL-5 64 bit, it has two interfaces, it has the following details
eth0=10.200.14.42
eth3=10.201.14.42
default gateway=10.201.14.254
one static route=192.168.0.0/24 gw 10.200.14.254
i am facing a problem when i ping 10.201.14.42 from... (2 Replies)
Discussion started by: surfer24
2 Replies
7. IP Networking
About a week ago a customer hooked up a wireless router backwards to our network, causing it to serve incorrect DHCP addresses to some of them. Our networks are mostly statically assigned so this didn't cause as much damage as it might have, but now, over a week later, I still have incomplete... (1 Reply)
Discussion started by: Corona688
1 Replies
8. UNIX for Advanced & Expert Users
Can someone please explain this output to me. Why doesn't ifconfig show the same info?
~ $ arp -a
? (10.71.0.1) at 00:1b:21:2b:eb:0c on eth0 (4 Replies)
Discussion started by: cokedude
4 Replies
9. IP Networking
Hi, I'm trying to find a way to protect my network against arp spoofing.
What it is:
An attacker sends fake arp packets in the network, identifying himself as the router. All network traffic is then redirected to this attacker.
How to protect myself:
In my opinion, the best possible... (2 Replies)
Discussion started by: chrisperry
2 Replies
10. IP Networking
Hello,
I have 2 clients with Unix installed.
host1: eth0 (192.168.5.10) & eth1 (192.168.10.10)
host2: eth0 (192.168.10.20)
I've connected host1-eth1 to host2-eth0. host1-eth0 isn't connected.
I started 'tcpdump' on wonder that host2 got ARP requests for 192.168.5.10.
Any idea why host1... (2 Replies)
Discussion started by: daWonderer
2 Replies
LEARN ABOUT DEBIAN
mrtg-ping-probe
MRTG-PING-PROBE(1) General Commands Manual MRTG-PING-PROBE(1)
NAME
mrtg-ping-probe - ping probe module for Multi Router Traffic Grapher
DESCRIPTION
mrtg-ping-probe is a ping probe module for MRTG 2.x. It is used to monitor the round trip time and packet loss to networked devices. MRTG
uses the output of mrtg-ping-probe to generate graphs visualizing minimum and maximum round trip times or packet loss.
mrtg-ping-probe is not run directly, but is called by MRTG as a helper when it needs to determine ping time to a host.
Act responsibly: do not use mrtg-ping-probe to ping devices without the owner's permission. Just imagine if 10,000 people decided to ping
your hosts! mrtg-ping-probe is meant to be used within your network to get round trip time performance figures for your network.
OPTIONS
To use mrtg-ping-probe you need to configure MRTG to call it from within the definition of a target host. This is done in the MRTG config
file, which is usually /etc/mrtg.conf.
Here's an example snippet: change the target name and IP address to suit your needs.
Target[your.target.ping]: `/usr/bin/mrtg-ping-probe 123.456.789.123`
SetEnv[your.target.ping]: MRTG_INT_IP="123.456.789.123" MRTG_INT_DESCR="ping"
MaxBytes[your.target.ping]: 100
AbsMax[your.target.ping]: 200
Options[your.target.ping]: gauge, growright
YLegend[your.target.ping]: ping time (ms)
ShortLegend[your.target.ping]: ms
Legend1[your.target.ping]: Maximum Round Trip Time in ms
Legend2[your.target.ping]: Minimum Round Trip Time in ms
Legend3[your.target.ping]: Maximal 5 Minute Maximum Round Trip Time in ms
Legend4[your.target.ping]: Maximal 5 Minute Minimum Round Trip Time in ms
LegendI[your.target.ping]: Max:
LegendO[your.target.ping]: Min:
Pay close attention to the backticks in the first line which tell MRTG to execute the nominated external program. Note also that you need
to use the "gauge" option, since the results of subsequent ping probes are independant values and not an incrementing counter.
SEE ALSO
mrtg(1).
The latest release of mrtg-ping-probe can be found on the web at http://pwo.de/projects/mrtg/
AUTHOR
This manual page was written by Jonathan Oxer <jon@debian.org>, for the Debian project (but may be used by others).
April 14, 2003 MRTG-PING-PROBE(1)