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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very strange broadcast in LAN with Cisco ASA
Today i have detected Cisco ASA 5505 CPU usage went to 100% and LAN was flood with broadcast (ff:ff:ff:ff:ff) going to 10.0.12.255 address, i have noticed all these activity in wireshark that some ...
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Unknown MAC address data frame flooding by switch
Let's say switch A has 2 switches connected at port 2 & port 4. There are a total of 8 ports.
With time, it knows the MAC address of other devices connected to it.
Now, the device on port 1 wants ...
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Allowing broadcast through a Cisco 5508
We recently installed WiFi thermostats that connect to a Delta eBMGR, which is connected via ethernet. They utilize the BACnet protocol, which is broadcast traffic. They are on their own subnet, but ...
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Switch Module on a Router
I have configured spanning tree on switch A.
I can show the spanning tree and it is running on switch A
The 2 interface does not form an etherchannel, they are individual port
There are no broadcast ...
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Why isn't my computer flooded with Beacon frames?
I used Wireshark to capture IEEE 802.11 Beacon frames in promiscuous mode. I see frames from about a dozen of AP's around me.
But I receive them only once in a few seconds, despite AP's having beacon ...
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point-to-point or broadcast network : concrete case
What concrete rule or layer of the OSI model should be used to decide whether a network is a point-to-point network or a broadcast network?
A general definition (*) seems clear, but in practice it ...
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DHCP packets in a Wi-Fi network (WEP2-Personal)
The DHCP packets with the message type Discover, Offer, Request and Acknowledge use the L2 broadcast address for communication (even in the Acknowledge packet which has an IP destination of the newly ...
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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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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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Ethernet frame's source mac-address out of a port in an ARP request forwarded to an interconnected switch towards an end host
PC1 ----- (P1) SWITCH1 (P2) ----- (P2) SWITCH2 (P1) ----- PC2
Assume two network switches SWITCH1 and SWITCH2 are interconnected to each other through their ports P2 respectively present on each ...
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Getting lot of unwanted broadcasts on my network
I am pretty new in Networking (noob), while I was monitoring my network using Wireshark, and I found that there is a lot of broadcasts happening all over the network, broadcast on Local network ...
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Can a Bridge forward frames with the destination as broadcast/multicast
I have a question regarding multicast and broadcast frames on a network bridge.
Will the bridge forward these frames from one network segment to another network segment ?
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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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How to block broadcast packets EXITING a single switchport
I have a couple cheap external wireless APs that like to reboot themselves constantly if they get even a few broadcast packets (i am ~90% certain this is the cause, after some testing with wireshark ...
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Defining what type of casting based on IPv4 address
I'm kinda new to networking. I have a small question, how can I determine what type of casting (unicast, multicast or broadcast) is it based on IPv4 address. For example: 142.55.172.200
I tried to ...
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