how to check mac address in cisco router

Since it has a built-in ADSL2+ modem, it's WAN port is the modem's DSL (telephone line) port. That device does not appear to have an Ethernet WAN port. You said your router is a 'dsl124', which I take to mean a 'D-Link DSL-124 Wireless N300 ADSL2+ Modem Router'. According to your screenshot, the ARP Cache entry for 192.168.1.1 is 1d1, which is likely the MAC address of the router interface to which you are connected. HOWEVER if your router does NOT have an Ethernet or Ethernet-like WAN port, then it will NOT have a MAC address. If your router has an Ethernet WAN port, then it will have a MAC address, that will usually show up in the web-based admin UI, as well as on a label on the bottom or back of the router. MAC addresses are a concept from Ethernet and Ethernet-like interfaces. In that case, the CGNAT gateway's upstream IP address would be your public IP address.

Use show ip arp include, where is the.

By default, all ports on a Cisco switch are assigned to the VLAN 1. ISPs are sometimes known as 'carriers', so this is known as 'Carrier-Grade NAT' (CGNAT). Internet routers move the packets from the source network to the destination network and then to the LAN on which the destination device is connected. Connect to the device that acts as default router for the target network and ping your target IP. This document shows you how to find a MAC (media access control) address of a Cisco telephone. MAC Address Table Steps to Check MAC Address Table: Click Start or click in the. Another example is if your ISP runs a NAT gateway between the Internet and their customers. In that case, the upstream modem/router combo box's WAN IP address would be more likely to be your public IP address. Then on layer 3 device to resolve it to ip address take the mac from above and run. For example, if you had a separate broadband 'modem' and you didn't realize it wasn't just a modem, but a NAT gateway router in its own right. The IP address of your router's WAN interface is usually your public IP address, but in some cases your router may be behind a second NAT gateway.

How to check mac address in cisco router