#How to check mac address of cisco router mac
To find out the MAC address for your network hardware, follow the steps listed below: The following include the OUIs of some well-known firms:ĭell: 00-14-22, Cisco: 00-40-96, and Nortel: 00-04-DC. This will be helpful in recognizing the manufacturer. This is called the Organizationally Unique Identifier (OUI). Most manufacturers, like Dell and Cisco, use a unique identifier in the MAC address. A MAC address contains six sets having two characters each set is separated by a colon. An example of a MAC address is 00:1C:45:11:3A:B7.
The identifier will be unique for each device. The computer is allowed to connect to the network using the network interface controller, which is a computer circuit card. When an MX is set to track clients by IP, the client MAC addresses displayed on the clients list may not be accurate.A MAC address is stored in hardware and is normally assigned by the manufacturer of a network interface controller. Since the non-Meraki layer 3 switch won't be modifying the source IP of client traffic, the MX can identify different clients by IP: In order to identify clients downstream of the non-Meraki layer 3 switch, the MX can be changed to track clients by their IP. Second, in cases where there is a non-Meraki layer 3 switch performing inter-VLAN routing downstream of the MX. If you are using Meraki layer 3 switches, enable Unique Client Identifier instead. Since non-Meraki layer 3 devices will modify the source MAC address of client traffic, the MX cannot identify clients by their MAC as shown below. This option is best used in the two case scenarios:įirst is in split networks, where all layer three devices are Meraki devices but they are in separate dashboard networks.
Note: Similar to Track by Unique client identifier, some tools, such as client connectivity alerts and client ping, are based on ARP and will not be available when using Track by IP. Tracking by unique client identifier also disables uplink sampling for clients, which can be helpful in certain scenarios where non-Meraki NAC solutions are deployed in mixed vendor environments. In this deployment scenario, tracking by IP would otherwise require the security appliance to be split into a separate dashboard network, as tracking by IP is not supported in combined networks. Tracking by MAC would fail to identify end client devices due to the layer 3 boundary, associating downstream client traffic to the routing switch and negatively affecting network usage numbers in dashboard. This method should be used only if the network has downstream layer 3 routing devices that are all Meraki devices.
This is specifically useful when there are Meraki MS switches routing layer 3 between end clients and the security appliance, which segregates broadcast traffic containing the client's MAC address. It uses an algorithm that intelligently correlates client MAC and IP addresses seen across the Meraki stack, allowing the security appliance to generate a unique identifier for each client in a combined network with other Meraki devices.
Unique client identifier is a Meraki technology that leverages network topology and device information to uniquely identify and track clients.