cat4948 sharing of mac addresses

Unanswered Question
Mar 30th, 2007
User Badges:


How can we use the last 4 ports (RJ45) and the SFP ports at the same time as the MAC address is shared bettween an RJ45 port and a SFP port?

What about:

RJ45 ports without STP for a server/host

SPF ports as trunk beetween switches



  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
glen.grant Fri, 03/30/2007 - 04:13
User Badges:
  • Purple, 4500 points or more

I don't think you can do that you have to select which interface in the config you want to use , you cannot use both .

royalblues Fri, 03/30/2007 - 04:40
User Badges:
  • Green, 3000 points or more

Glenn is right, you cannot use both at the same time.

Its actually 1000baseTx or SFP but not both



jabouaf Sun, 04/01/2007 - 23:29
User Badges:


thank you to both of you, but what about using those ports as layer2 ports (not having an ip adresse on both the 2 parts of the couple (RJ45, SFP) ).

for 1 RJ45 port, there is 1 SPF port.

For STP, (if I do not make a mistake), the MAC address is the same for all the switch, even with RSTP)

What do you think about this ?



This Discussion