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What happens if there are duplicate MAC addresses?
Duplicate MAC Addresses MAC Addresses are ‘burned’ into the Network Interface Card (NIC) and cannot be changed. See ARP and RARP on how IP addresses are translated into MAC Addresses and vice versa. In order for a network device to be able to communicate, the MAC Address it is using must be unique.
CAN 2 system have same IP and MAC address?
All Answers (13) Yes you can have multiple IP addresses assigned to the same MAC address. Dear Nikhil Tripathi, Yes, you can. 2- there are two PC in your network have the same MAC, through some software, it possible to change your PC MAC and this case is the right as I thing.
Is it common to have the same MAC address in multiple VLANs?
If there are just two offending NICs, it’s probably better to replace one. It’s very common to have the same MAC address in multiple VLANs. Look at any Catalyst 6500/7600 router, for example: all its routed interfaces will have the same MAC address.
Can a duplicate MAC address cause a problem?
Will duplicated MAC address give problems, if in different VLANs? A small company has 2 Cisco Catalyst 3550, with 24 ports each, connecting their equipaments. After some trouble, we found that two NICs had the same MAC address. After the initial reaction of blaming who bought such NICs, etc.,
Can a Cisco NIC have the same MAC address?
– Network Engineering Stack Exchange Will duplicated MAC address give problems, if in different VLANs? A small company has 2 Cisco Catalyst 3550, with 24 ports each, connecting their equipaments. After some trouble, we found that two NICs had the same MAC address.
How many MAC addresses can a switch learn?
Quick answer is, that depends on how much money you spent when you bought the thing, because higher‑end switches can support more and learn more MAC addresses. I have a live piece of equipment here, Switch 1. It says the maximum number of MAC addresses that it can learn is 8,192 MAC addresses.