All Questions
8
questions
1
vote
2
answers
79
views
How do switches route ethernet packets - when there are two switches in series between origin and destination?
I would like to introduce my question with the following example:
Let us say we want to sent an ethernet packet from computer A to computer B via a switch
We sent the packet with destination BBB from ...
- 13
6
votes
2
answers
495
views
How to connect a special device in a network
I have a question which is puzzling me.
I have a couple of custom electronic devices (are identical, one is a master and the other is a slave) which implement only up to level 2 of the ISO/OSI layer, ...
- 61
22
votes
4
answers
19k
views
Why is the CAM table in a switch called CAM table and not MAC table even though it holds MAC addresses?
I know the CAM table in a switch holds MAC addresses and the ports that are associated with the respective MAC addresses. There are no such thing as CAM addresses from my knowledge, so why is it ...
- 1,541
3
votes
1
answer
2k
views
Do typical Ethernet switches have timeout for MAC table entries?
Ethernet switches have a learning process through which they gradually begin to understand the network topology -- which MAC address is behind which port. When seeing a port to send a frame with a ...
- 465
2
votes
2
answers
11k
views
Cisco question regarding static MAC addresses on switch
CCENT student here and looking for some confirmation. Working on the ICND1 Odom book with a 2950 switch. I have a quick question regarding static MAC addresses, as per this passage:
Here is my ...
- 285
14
votes
2
answers
25k
views
Does the source MAC address of a frame change when it passes through several switches? [duplicate]
If PC1 sends an Ethernet frame to Switch1 which forwards the frame to Switch2 which in turn forwards the frame to PC2, does any decapsulation happen that changes the source MAC address?
- 175
15
votes
3
answers
29k
views
How does a switch know where to route packet, when there is another switch in front of the destination?
I am just wondering how a switch does know how to route packets to destinations "hidden" behind another switch.
In my understanding a switch has a table that maps each of its hardware ports to exactly ...
- 253
30
votes
4
answers
75k
views
How does a switch learn a switch table?
Say the switch table is empty. If computer A sends a frame destined to computer B, the switch will broadcast asking who has the MAC address of B. What if C suddenly sends a frame to A? What is the ...
- 835