Cisco 2811 VLAN Usage

5 pts.
Tags:
Cisco 2811 configuration
Cisco router configuration
Cisco Routers
Cisco VLAN
Fast Ethernet
Routers
VLAN
VLAN configuration
I inherited a network that has a Cisco 2811 router setup with the following: interface FastEthernet0/0 no ip address no ip route-cache cef no ip route-cache duplex full speed 100 ! interface FastEthernet0/0.18 description Data VLAN encapsulation dot1Q 18 native ip address 10.221.18.1 255.255.255.0 ip flow ingress ip flow egress no ip route-cache ! interface FastEthernet0/0.255 description Voice VLAN encapsulation dot1Q 255 ip address 10.255.255.1 255.255.255.0 no ip route-cache no keepalive I need some help understanding what Cisco has done here. I belive that interface FastEthernet0/0 has been setup as an IEEE802.1Q trunk port. The VLANS on this interface are VLAN 18 with interface 10.221.18.1 and VLAN 255 with interface 10.255.255.1. My questions is: Do I have to send packets to interface FastEthernet0/0 tagged? The switch that was connected to this interface had no configuration to it. I replaced that switch and things have stopped working. If I create VLAN 18 and VLAN 255 on my switch and assign ports to the VLANS, I assume this will correct my problems. Is my understanding correct?

Answer Wiki

Thanks. We'll let you know when a new response is added.

You do one thing, plz replace the encapsulation from dot1q to isl, then it would work properly. There are very rare chances to configure isl in place of dot1q encapsulation. So please put this following command :

encapsulation isl 18
encapsulation isl 255

in place of encapsulation dot1q 18 native & encapsulation dot1q 255.

Thanks & Regards,
Bhupendra Singh
+91 9650234666

Discuss This Question: 1  Reply

 
There was an error processing your information. Please try again later.
Thanks. We'll let you know when a new response is added.
Send me notifications when members answer or reply to this question.

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
  • Mohammadanwar
    would like to know Wiki answer
    10 pointsBadges:
    report

Forgot Password

No problem! Submit your e-mail address below. We'll send you an e-mail containing your password.

Your password has been sent to:

To follow this tag...

There was an error processing your information. Please try again later.

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Thanks! We'll email you when relevant content is added and updated.

Following