what is primary port with regard to cisco access point?

Answered Question
Feb 22nd, 2008

hi every body

i have few questions regarding cisco access points.

what is primary port?

what are those conditions when radio interface need different ip address from that of ethernet interface?

by default radio interface assumes the identity of primary port but what purpose it serves?

thanks alot

have a nice day

I have this problem too.
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Correct Answer by scottmac about 8 years 11 months ago

What do you mean "primary port?"

If you mean which one gets the IP address for management, it would be BVI0.

There are no circumstances in which you'd want the radio interface to have a different IP than the Ethernet. The AP is not a router. The highest you'll see it on the OSI is L2.

It is most like a hub ... shared bandwidth for all devices associated to it, regardless of the SSID or VLAN the traffic ultimately is assigned to.

It is "a little" like a switch in that it CAN support VLANs and map a VLAN to an SSID and pass teh traffic out the ethernet port, configured as a 802.1q trunk to a switch with a compatible config.

AND, By the way, no IP address is required on the AP for it to work. The IP address is strictly there for management purposes (like a managed switch).

Good Luck

Scott

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Correct Answer
scottmac Fri, 02/22/2008 - 16:18

What do you mean "primary port?"

If you mean which one gets the IP address for management, it would be BVI0.

There are no circumstances in which you'd want the radio interface to have a different IP than the Ethernet. The AP is not a router. The highest you'll see it on the OSI is L2.

It is most like a hub ... shared bandwidth for all devices associated to it, regardless of the SSID or VLAN the traffic ultimately is assigned to.

It is "a little" like a switch in that it CAN support VLANs and map a VLAN to an SSID and pass teh traffic out the ethernet port, configured as a 802.1q trunk to a switch with a compatible config.

AND, By the way, no IP address is required on the AP for it to work. The IP address is strictly there for management purposes (like a managed switch).

Good Luck

Scott

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