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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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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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 ...
- 111
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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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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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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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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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Are ARP requests cascading
When a device sends an ARP Request, it broadcasts to all Nodes, which then check against their own ARP Tables and respond with an ARP reply or drop the Packet, but what happens if the device is not ...
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DHCP Discover Broadcast and its IP (255.255.255) [duplicate]
Cheers, I am trying to learn more about DHCP, and when studying about the session that DHCP goes through every one mentions that it broadcasts a discover message at IP: (255.255.255.255) (as seen here ...
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BACnet broadcasts with 2 subnets on one VLAN
I have a building automation network configuration with mechanical equipment on subnet 10.233.138.0/24 and electrical equipment on subnet 10.233.136.0/23. BACnet uses broadcasts for certain functions ...
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Can Directed Broadcasts be forwarded even if the destination is 2 hops away?
I was studying for the CCNA exam and I read this: " When a directed broadcast packet reaches a router that is directly connected to the destination network , that packet is broadcast on the ...
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broadcast instead of multicast for CARP/VRRP/keepalive
In many cloud environments, multicast is blocked therefore when trying to configure CARP/VRRP customer needs to add a dedicated switch.
For example, CARP partially works if using a vSwitch from Hetzer,...
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Optimize Network For UDP Broadcast Traffic?
I have a computer that creates an AP which multiple microcontrollers connect to. The computer sends out UDP Broadcast packets that tell the microcontrollers to do different things.
I have an issue ...
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How does a network switch prioritize ethernet frames with the broadcast MAC address?
How does a network switch prioritize the incoming ethernet frames that all have the broadcast MAC address as a receiver address?
So, we have the following situation:
a 10GE network switch with 3 ...
- 103
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How does a router handle a directed broadcast on the same network?
I have started reading on Computer Networks recently(beginner), and have come across some of the doubts regarding how the broadcasting is handled by routers and switches. Assuming there are no ...
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