#Convert mac address into binary mac#
Next, remove the first six(6) characters from OUI from the wired MAC address. As AP-135 come with two ethernet ports, then the MAC address of second ethernet port would be d8:c7:c8:cc:43:2 (4+1) = d8:c7:c8:cc:43:2 5. Lets take one of the wired MAC address shown in the above image. If you have configured, then either look physically on the AP or we can take it from "show ap database long" CLI command, as shown below: With an example, lets understand how the BSSID is derived from the wired MAC address of an AP:īy default, the wired MAC address of an Access Point appears as a AP name. Two ethernet ports gives double the amount of available MAC addresses than one port. Underlying limitation is that each BSSID needs a MAC address that is derived from the ethernet port MAC.
Total BSSID's including b/g and a radio = 16 SSIDs per radio: (Number of Ethernet ports * 16) / number of radios on an AP.įor example, for AP-105 which is a single ethernet and dual-radio AP: So, as we know Aruba Access Points are capable of broadcasting multiple WLAN's on a single radio (b/g or a) and thereby the number of SSID's per radio of an Access Point: When a wireless client associates to an AP, it sends traffic to the AP’s Basic Service Set Identifier (BSSID) which is usually derived from Access Points MAC address. Figure 2 shows these patterns for selected 8-bit values.Environment : This article applies to Aruba Mobility Controllers, Aruba Campus and Instant Access PointsĪPs advertise WLANs to wireless clients by sending out beacons and probe responses that contain the WLAN’s SSID and supported authentication and data rates. With practice, it is possible to recognize the binary bit patterns that match the decimal and hexadecimal values. If such conversions are required, it is usually easier to convert the decimal or hexadecimal value to binary, and then to convert the binary value to either decimal or hexadecimal as appropriate. Number conversions between decimal and hexadecimal values are straightforward, but quickly dividing or multiplying by 16 is not always convenient.
Hexadecimal is used to represent Ethernet MAC addresses and IP Version 6 addresses. Therefore, the examples above would be shown as 0x0A and 0x73 respectively. However, because subscript text is not recognized in command line or programming environments, the technical representation of hexadecimal is preceded with "0x" (zero X). Less commonly, it may be followed by an H, for example 73H. Hexadecimal is usually represented in text by the value preceded by 0x (for example 0x73) or a subscript 16. Note: It is important to distinguish hexadecimal values from decimal values regarding the characters 0 to 9, as shown in Figure 1. For example, the binary value 0000 1010 is shown in hexadecimal as 0A. Leading zeroes are always displayed to complete the 8-bit representation.
Given that 8 bits (a byte) is a common binary grouping, binary 00000000 to 11111111 can be represented in hexadecimal as the range 00 to FF. It is easier for us to express a value as a single hexadecimal digit than as four binary bits. Figure 1 shows the equivalent decimal and hexadecimal values for binary 0000 to 1111. The base sixteen number system uses the numbers 0 to 9 and the letters A to F. Just as decimal is a base ten number system and binary is a base two number system, hexadecimal is a base sixteen system. Hexadecimal provides a convenient way to represent binary values. When used by itself (as a noun) it means the hexadecimal number system. Hexadecimal is a word that is used both as a noun and as an adjective. The use of the MAC address is one of the most important aspects of the Ethernet LAN technology.
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