Hands-on Labs
643
AUI 1 Static
A 1 Static
B 1 Static
1900A#
Lab B.5: Configuring Trunking
Before we can share information with our second switch, we need to
configure the link between the switches. We don't necessarily have to con-
figure a trunked link, but if we don't, then only VLAN 1 information would
be transferred between switches. Instead, we want to configure all VLANs'
information to be transferred between switches.
1.
On 1900A, configure port 26 to be in auto-trunk mode. This will
allow the link to become trunked as soon as we set the second switch's
trunk port to on.
1900A#config t
Enter configuration commands, one per line. End with
CNTL/Z
1900A(config)#int f0/26
1900A(config-if)#trunk ?
auto Set DISL state to AUTO
desirable Set DISL state to DESIRABLE
nonegotiate Set DISL state to NONEGOTIATE
off Set DISL state to OFF
on Set DISL state to ON
1900EN(config-if)#trunk auto
2.
Attach to the second 1900 switch and name the switch 1900B. Create
port 26 as a permanent trunk port.
#config t
Enter configuration commands, one per line. End with
CNTL/Z
(config)#hostname 1900B
1900B(config)#int f0/26
1900B(config-if)#trunk ?
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