Ethernet interface configuration ·································································································································· 1

Ethernet interface naming conventions ··························································································································· 1

General configuration ······················································································································································ 1

Configuring a combo interface ······························································································································· 1

Configuring basic settings of an Ethernet interface ······························································································ 2

Shutting down an Ethernet interface ······················································································································· 3

Configuring flow control on an Ethernet interface ································································································ 3

Configuring link change suppression on an Ethernet interface ··········································································· 4

Configuring loopback testing on an Ethernet interface ························································································ 5

Configuring the link mode of an Ethernet interface ······························································································ 5

Configuring jumbo frame support ·························································································································· 6

Enabling the auto power-down function on an Ethernet interface ······································································ 6

Configuring a Layer 2 Ethernet interface ······················································································································· 7

Layer 2 Ethernet interface configuration task list ·································································································· 7

Configuring a port group ········································································································································ 8

Setting speed options for auto negotiation on an Ethernet interface ·································································· 8

Configuring storm suppression ······························································································································· 9

Setting the statistics polling interval ····················································································································· 10

Enabling loopback detection on an Ethernet interface ····················································································· 11

Setting the MDI mode of an Ethernet interface ·································································································· 13

Enabling bridging on an Ethernet interface········································································································ 14

Testing the cable connection of an Ethernet interface ······················································································· 14

Configuring storm control on an Ethernet interface ··························································································· 15

Setting the MTU for a Layer 3 Ethernet interface ········································································································ 16

Displaying and maintaining an Ethernet interface ····································································································· 16

Loopback and null interface configuration ··············································································································· 18

Configuring a loopback interface ································································································································ 18

Introduction to the loopback interface················································································································· 18

Configuration procedure ······································································································································ 18

Configuring the null interface ······································································································································· 19

Introduction to the null interface ··························································································································· 19

Displaying and maintaining loopback and null interfaces ························································································ 20

MAC address table configuration····························································································································· 21

Overview ········································································································································································· 21

How a MAC address table entry is created ······································································································· 21

Types of MAC address table entries ··················································································································· 21

MAC address table-based frame forwarding ···································································································· 22

Configuring the MAC address table ···························································································································· 22

Configuring static, dynamic, and blackhole MAC address table entries ······················································· 22

Disabling MAC address learning on a VLAN ···································································································· 23

Configuring the aging timer for dynamic MAC address entries ······································································ 23

Configuring the MAC learning limit on ports ····································································································· 24

Enabling MAC address roaming ························································································································· 24

Displaying and maintaining MAC address tables ····································································································· 26

MAC address table configuration example ················································································································ 26