CCNA Complete Guide 2nd Edition.pdf - Cisco Learning Home

Chapter 6
Spanning Tree Protocol Lab
Basic Catalyst Switch Configuration
- All current Cisco routers and Catalyst switches run Cisco IOS software (legacy Catalyst switches
run CatOS with a series of set-based and show commands), hence Catalyst switches share a lot
of command syntaxes and similarity with the configuration and administration of Cisco routers.
- Below list some basic Catalyst switch show commands:
show interfaces status Displays a summary view of all interfaces status.
show mac-address-table dynamic Displays the dynamically learned MAC addresses in
the bridging table.
Switch#show interfaces status
Port Name Status Vlan Duplex Speed Type
Fa0/1 connected 1 a-full a-100 10/100BaseTX
Fa0/2 connected 1 a-full a-100 10/100BaseTX
Fa0/3 notconnect 1 auto auto 10/100BaseTX
Fa0/4 notconnect 1 auto auto 10/100BaseTX
Fa0/5 notconnect 1 auto auto 10/100BaseTX
Fa0/6 notconnect 1 auto auto 10/100BaseTX
Fa0/7 notconnect 1 auto auto 10/100BaseTX
Fa0/8 notconnect 1 auto auto 10/100BaseTX
Switch#
Switch#show mac-address-table dynamic
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
1 aaaa.aaaa.aaaa DYNAMIC Fa0/1
1 bbbb.bbbb.bbbb DYNAMIC Fa0/2
Total Mac Addresses for this criterion: 2
Switch#
- A switch is normally configured with a management IP address for remote access management.
The IP address is configured on the Vlan1 interface. A switch also needs a default gateway,
which can be configured with the ip default-gateway {gw-ip-addr} global configuration
command. The show running-config privileged command can be used to view these settings.
Switch#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#int vlan 1
Switch(config-if)#ip add 192.168.0.11 255.255.255.0
Switch(config-if)#no shut
Switch(config-if)#exit
00:03:01: %LINK-3-UPDOWN: Interface Vlan1, changed state to up
00:03:02: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed
state to up
Switch(config)#ip default-gateway 192.168.0.1
Switch(config)#^Z
Switch#
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