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FTOS Configuration Guide for the C-Series - Force10 Networks

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Step Task Command Command Mode<br />

3 Configure <strong>the</strong> interface <strong>for</strong> switchport mode. switchport INTERFACE<br />

4 Add <strong>the</strong> interface to a tagged or untagged VLAN. [tagged | untagged] VLAN INTERFACE<br />

Note: An existing switchport or port channel interface cannot be configured <strong>for</strong> Native VLAN. Interfaces<br />

must have no o<strong>the</strong>r Layer 2 or Layer 3 configurations when entering <strong>the</strong> command portmode hybrid or<br />

a message like Message 15 is displayed.<br />

Message 15 Native VLAN Error<br />

% Error: Port is in Layer-2 mode Gi 5/6.<br />

MAC Addressing and MAC Access Lists<br />

This section contains <strong>the</strong> following sections:<br />

• MAC Access Control List Basics on page 190<br />

• MAC ACL Implementation on page 190<br />

• <strong>Configuration</strong> Task List <strong>for</strong> MAC ACLs on page 191<br />

• Managing <strong>the</strong> MAC Address Table on page 198<br />

Media Access Control (MAC) is a sublayer of <strong>the</strong> data link layer (Layer 2 of <strong>the</strong> OSI seven-layer model).<br />

MAC addresses (machine addresses) are used to interconnect LAN components and dictate how each<br />

device accesses and shares <strong>the</strong> network connection.<br />

In some cases, <strong>the</strong> MAC address is <strong>the</strong> one assigned to <strong>the</strong> chassis. In o<strong>the</strong>r cases, it is one assigned to an<br />

interface. MAC addresses are displayed in a hexadecimal <strong>for</strong>mat. Figure 96 displays how MAC addresses<br />

are displayed by <strong>FTOS</strong>. Figure 97 displays how displayed MAC addresses are rendered from <strong>the</strong>ir 48-bit<br />

<strong>for</strong>mat.<br />

Figure 96 MAC Address Format<br />

HARDWARE MAC ADDRESS<br />

<strong>Force10</strong> <strong>Networks</strong><br />

Prefix - OUI<br />

NIC-specific<br />

Suffix<br />

00 : 01 : e8 : 06 : 95 : 71<br />

Virtual<br />

Prefix - OUI<br />

Virtual<br />

Suffix<br />

VIRTUAL MAC ADDRESS 00 : 00 : 5e : 00 : 01 : 63<br />

<strong>FTOS</strong> <strong>Configuration</strong> <strong>Guide</strong>, version 7.7.1.0 189

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