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CCENT/CCNA ICND1 100-101 Official Cert Guide by Wendell Odom

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Enabling IP for Remote Access

To allow Telnet or SSH access to the switch, and to allow other IP-based management protocols (for example, Simple Network Management Protocol) to function as intended, the switch needs an IP address. The IP address has nothing to do with how switches forward Ethernet frames; it simply exists to support overhead management traffic.

A switch’s IP configuration works like a PC with a single Ethernet interface. For perspective, a PC has a CPU, with the operating system running on the CPU. It has an Ethernet network interface card (NIC). The OS configuration includes an IP address associated with the NIC, either configured or learned dynamically with DHCP. To support IP, the switch has the equivalent settings.

A switch ...

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