Why the one device (Access Point or Switch) connected on the...

<< Back to: TCP/IP FAQ; Frequently Asked Questions (1999-09) Part 1 of 2

FAQS.ORG makes no guarantees as to the accuracy of the posts. Each post is the personal opinion of the poster. These posts are not intended to substitute for medical, tax, legal, investment, accounting, or other professional advice. FAQS.ORG does not endorse any opinion or any product or service mentioned mentioned in these posts.

<< Back to: TCP/IP FAQ; Frequently Asked Questions (1999-09) Part 1 of 2

[ Home | FAQ-Related Q&As | General Q&As | Answered Questions ]

Question by Ranjeet
Submitted on 6/4/2004
Related FAQ: TCP/IP FAQ; Frequently Asked Questions (1999-09) Part 1 of 2
Rating: Not yet rated	Rate this question:
Why the one device (Access Point or Switch) connected on the same subnet replies the ping request to 192.168.3.255 send by another host on the same subnet. The environment is as following IP/Subnet Mask 1. Connect one network Device (192.168.3.100/255.255.255.0) on hub. 2. Connect one PC (192.168.3.190) on same hub. 3. Now ping from PC to IP address 192.168.3.255 and capture the ethernet packets. The network device wills response to PC ping request. Why it happens? Please tell me (raini@punjabi.net ) is this Device problem or Device behavior?

Answer by Alex
Submitted on 7/29/2005
Rating: Not yet rated	Rate this answer:
Because by sending data to x.x.x.255, you are sending data to the entirety of that subnet, if you were to put two APs, you would see both of them reply. This has been tested amusingly by, when windows 98 was prevalent, and the IGMP flood vulnerability was still gaping, Nuking the subnet (192.168.0.255). Every 98 computer on the network instantly crashed.

Answer by dawncq
Submitted on 7/19/2006
Rating: Not yet rated	Rate this answer:
192.168.3.255/24 is a broadcast address, not a device actual IP address. everyone is the same subnet will response to that request

Answer by Puru
Submitted on 3/14/2007
Rating: Not yet rated	Rate this answer:
This address is used as a broadcast address u r pinging. since this ping will go to every device so any one can reply. as a device behavior

Your name or nickname:
If you'd like to create a new account or access your existing account, put in your password here:
Your answer: