Cisco Cisco Aironet 350 Wireless Bridge Guía De Información
non−native VLAN:
SSID [xxx] must be configured as native−vlan before enabling
infrastructure−ssid
Because access points create a virtual interface for each radio interface, repeater access points
associate to the root access point twice: once for the actual interface and once for the virtual
interface.
associate to the root access point twice: once for the actual interface and once for the virtual
interface.
Note: You cannot configure multiple VLANs on repeater access points. Repeater access
points support only the native VLAN.
points support only the native VLAN.
Q. What are the features supported by the Aironet Extension option?
A. The Aironet extension is a proprietary feature implemented by Cisco. Aironet extensions
contains information elements that support these features.
contains information elements that support these features.
Load Balancing: The access point uses Aironet extensions to direct client devices to
an access point that provides the best connection to the network based on factors such
as the number of users, bit error rates, load and signal strength.
an access point that provides the best connection to the network based on factors such
as the number of users, bit error rates, load and signal strength.
Load balancing is proprietary between devices that understand the Aironet
extensions. Load balancing is implemented by extensions in AP beacons and/or
probe−responses, which provide information on these:
extensions. Load balancing is implemented by extensions in AP beacons and/or
probe−responses, which provide information on these:
Base−station signal strength
◊
Base station loading (% transmitter busy)
◊
Number of hops to the backbone
◊
Number of client associations
◊
The client evaluates these and associates to the "best" one. Non−Cisco clients do not
understand these extensions.
understand these extensions.
♦
MIC: Cisco Proprietary Message Integrity Check (MIC) MIC is an additional WEP
security feature that prevents attacks on encrypted packets called bit−flip attacks. The
MIC is implemented on both the access point and all associated client devices.
security feature that prevents attacks on encrypted packets called bit−flip attacks. The
MIC is implemented on both the access point and all associated client devices.
♦
Cisco Proprietary Temporal Key Integrity Protocol (CKIP), also known as WEP
key hashing, is an additional WEP security feature that defends against an attack on
WEP, in which the intruder uses an unencrypted segment called the initialization
vector (IV) in encrypted packets to calculate the WEP key.
key hashing, is an additional WEP security feature that defends against an attack on
WEP, in which the intruder uses an unencrypted segment called the initialization
vector (IV) in encrypted packets to calculate the WEP key.
♦
In addition to these, Aironet extensions carry more information that include these:
Load that the AP currently handles
◊
Number of hops from the Wired network
◊
Device type, which helps identify the product under the Cisco system for
management
management
◊
Device name
◊
Number of associated clients
◊
Radio type, a feature used to determine certain characteristics about the radio,
such as datarate, radio type (1310, 1200, 352 or 342), security type
(WEP/802.1x), etc.
such as datarate, radio type (1310, 1200, 352 or 342), security type
(WEP/802.1x), etc.
◊
♦
Devices that are CCX compatible also can take advantage of some of the Aironet Extension
features. Here is a list of the features available with the different versions of Cisco
Compatible Extensions:
features. Here is a list of the features available with the different versions of Cisco
Compatible Extensions:
Cisco Compatible Extensions − Versions and Features