Lệnh ip route

Chapter Description

In this sample chapter from CCNA 200-301 Official Cert Guide, Volume 1, Wendell Odom discusses the configuration and verification steps related lớn three methods of routing between VLANs with three major sections: VLAN Routing with Router 802.1Q Trunks, VLAN Routing with Layer 3 Switch SVIs, & VLAN Routing with Layer 3 Switch Routed Ports.

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CCNA 200-301 Official Cert Guide, Volume 1

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Commvà References

Tables 17-4 & 17-5 các mục configuration and verification commands used in this chapter. As an easy Đánh Giá exercise, cover the left column in a table, read the right column, and try lớn reCall the commvà without looking. Then repeat the exercise, covering the right column, and try khổng lồ regọi what the comm& does.

Table 17-4 Chapter 17 Configuration Command Reference

Command

Description

interface type number.subint

Router global commvà lớn create a subinterface và to enter configuration mode for that subinterface

encapsulation dot1q vlan-id <native>

Router subinterface subcommand that tells the router to use 802.1Q trunking, for a particular VLAN, and with the native keyword, khổng lồ not encapsulate in a trunking header

<no> ip routing

Global comm& that enables (ip routing) or disables (no ip routing) the routing of IPv4 packets on a router or Layer 3 switch

interface vlan vlan-id

A switch global commvà on a Layer 3 switch to lớn create a VLAN interface and to lớn enter configuration mode for that VLAN interface

sdm prefer lanbase-routing

Command on some Cisteo switches that reallocates forwarding chip memory to allow for an IPv4 routing table

<no> switchport

Layer 3 switch subcomm& that makes the port act as a Layer 2 port (switchport) or Layer 3 routed port (no switchport)

interface port-channel channel-number

A switch commvà lớn enter PortChannel configuration mode & also to create the PortChannel if not already created

channel-group channel-number mode passive

Interface subcomm& that enables EtherChannel on the interface

Table 17-5 Chapter 17 EXEC Comm& Reference

Command

Description

show ip route

Lists the router’s entire routing table

show ip route <connected>

Lists a subphối of the IP. routing table

show vlans

Lists VLAN configuration & statistics for VLAN trunks configured on routers

show interfaces <interface type number>

Lists detailed status & statistical information, including IP. address and mask, about all interfaces (or the listed interface only)

show interfaces <interface type number> status

Aý muốn other facts, for switch ports, lists the access VLAN or the fact that the interface is a trunk; or, for routed ports, lists “routed”

show interfaces interface-id switchport

For switch ports, lists information about any interface regarding administrative sầu settings & operational state; for routed ports, the output simply confirms the port is a routed (not switched) port

show interfaces vlan number

Lists the interface status, the switch’s IPv4 address & mask, and much more

show etherchannel <channel-group-number> summary

Lists information about the state of EtherChannels on this switch, including whether the channel is a Layer 2 or Layer 3 EtherChannel


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