Refer to the exhibit. The switches are connected via a Cat5 Ethernet cable that is tested successfully. The interfaces are configured as access ports and are both in a down status. What is the cause of the issue?
A.
The speed settings on the switches are mismatched
B.
The distance between the two switches is not supported by Cat5
C.
The switches are configured with incompatible duplex settings
D.
The portfast command is missing from the configuration
I've seen this claim from cisco as well but when I change one side to full and the other side to half the link doesn't come up either. Does anyone know why?
Although not mentioned, this is true with EtherChannels/LAG where the membership requirements are as follows:
- same duplex
- same speed
- same switchport mode
Indeed. This could go either A or C, or better yet, both. If the ports were on auto-negotiate, we know that SwitchB will default to half-duplex. It would work, but not advisable for long-term.
Speed and duplex need to match.
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