Questions tagged [broadcast]
For questions about broadcasting in computer networking. Use this tag when you are troubleshooting or configuring network devices in relation to broadcast.
161 questions
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Why is 10.1.255.255 an invalid broadcast address?
I’ve been following the CCENT official certification book(100-105) and came upon this question in the “do I know this already?” quiz. The books only covered /24 subnetting only so far.
Which of the ...
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Is a DHCP offer packet a broadcast or unicast?
DHCP OFFER is a layer3 broadcast because the server doesn't know the client's IP, but the server knows the client's MAC address. So why does it send the OFFER as L2 broadcast?
If anyone ask me about ...
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How broadcasting works on different networks?
I was reading DHCP ( RFC 2131 ), I have basic knowledge about Relay Agent and Broadcasting. But for Understanding DHCP in depth, I felt like I have to know Broadcasting and Relay Agent ( RFC 1542 ) in ...
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Technical difference between a Collision and Broadcast Domain
Many people new to networking wonder what the technical differences between a broadcast domain and a collision domain are. Specifically:
What criteria is used to know the boundaries of a collision ...
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WHY and HOW do routers and vlans break broadcast domains?
Everybody says routers (and vlans) break broadcast domains, but nobody goes into WHY that is, it seems.
What's the router logic?
Say I have three routers on my lan, with one main router and the ...
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Pinging broadcast address [closed]
I am using Linux. I read somewhere on the internet that pinging the address 255.255.255.255 will ping everyone in the network segment. And it will return every IP addresses in that subnet. But when I ...
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What is the difference between layer-2 and layer-3 broadcasts? Please explain with an example
What is the difference between broadcast addresses ff.ff.ff.ff.ff.ff (Layer 2) and 255.255.255.255 (Layer 3)?
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What is the difference between broadcasting and flooding?
In the Open Shortest Path First routing algorithm, the information about connected links is "flooded" throughout the network.
How is flooding different from broadcasting?
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How to control unwanted UDP traffic (Broadcast & Multicast) on Cisco Router 2911?
Please suggest, we are getting UDP traffic either broadcast or multicast in router 2911 which cause 95%+ utilisation of the router. And we got error in link and business impact due to this. Company ...
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ARP Replies can they be Broadcast
I have been informed by certain networking professionals that ARP replies can and sometimes actually are broadcast packets instead of unicast. If and when would you use a broadcast ARP reply?
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How is the Groupwise Transient Key used in WiFi networks?
In Wifi WPA, I understand that during association, a 802.11 client and AP negotiate a Pairwise Transient Key (PTK), using which the Groupwise Transient Key(GTK) is provided to the station.
I ...
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Why couldn't a nework address be used as as broadcast address as well?
I am taking a refresher on Networking and I found out that:
Network address is an IP address with all 0s after the subnet mask
Broadcast address is an IP address with all 1s after the subnet mask
...
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Why do we use VLAN?
According to my understanding, the network switch will look out for the specific MAC address and then it will forward the frame so basically it doesn't broadcast the frames then why do we make VLANs? ...
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What are real life examples of broadcast and multicast?
In broadcast routing, packets are sent to all nodes even if they do not want it. What is a real life example of "broadcast"? Almost everything I can think of, like GMail and YouTube, appears to be ...
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What is the difference between MAC and İP broadcast addresses?
As far as I know, both MAC and IP broadcast addresses are used to send a packet to all hosts that are connected to a local area network. Why would anyone need two addresses to send a broadcast package?...
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