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connection 3900 series router to 4500 series switch

ssnickson
Level 1
Level 1

i would like to know how to config to connect a 3900 series router with the 4500 series switch. and i need to test the communication. I need it urgently.thanks

1 Reply 1

Nagaraja Thanthry
Cisco Employee
Cisco Employee

Hello,

You can configure the 3900 normally i.e.

interface gi 0/0

ip address "address" "mask"

no shut

exit

and configure the switch port as an access port:

int gi 4/1

Switchport access vlan "vlan id"

no shut

exit

In the above configuration, the 3900 will be part of a specific vlan. If you

want to configure the router to be part of multiple vlans, then:

interface gi 0/0

no shut

exit

int gi 0/0.1

encapsulation dot1q 1 native

ip address "address" "mask"

exit

int gi 0/0.2

encapsulation dot1q 2

ip address "address" "mask"

exit

int gi 0/0.3

encapsulation dot1q 3

ip address "address" "mask"

exit

On the switch side:

int gi 4/1

Switchport trunk encapsulation dot1q

Switchport trunk native vlan 1

Switchport mode trunk

exit

In both cases, you can ping the IP of the 4500 from 3900 and vice versa to

check the connectivity.

Hope this helps.

Regards,

NT

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