CISCO 2921

[TristanGude]

Can I connect a CISCO 2921 Router to a Wan through one of the gig ports or I need an EHWIC to do this?

[Aref Alsouqi]

Native vlan is configured on the trunk connection (so on interfaces of both ends that are on the trunk), for example if you want to change the native vlan form default 1 to 4, you would do so:

Router f0/0 ==== TRUNK ==== Switch f0/5

On Router:

int f0/0.4
 encapsulation dot1Q 4 native

On Switch:

int f0/5
  switchport trunk native vlan 4

Regards,

Aref
 

[TristanGude]

Thank you very much.

Let me know if this is correct. I highly appreciate your help.

Switch-A

Vlan 101

Vlan 1 native

Switch connect to router on gig 0/0

interface gig 0/0.1

encapsulation dot1q 1 native

ip address 172.16.0.1 255.255.255.0

ip nat inside

interface gig 0/0.101

encapsulation gig 0/0.101

encapsulation dot1q 101

ip address 172.16.101.1 255.255.255.0

ip nat inside

Switch-B

Vlan 15

Vlan 1 native

Switch connect to router on gig 0/2

interface gig 0/2.1

encapsulation dot1q 1 native

ip address 172.16.1.1 255.255.255.0

ip nat inside

interface gig 0/2.15

encapsulation gig 0/0.15

encapsulation dot1q 15

ip address 172.16.15.1 255.255.255.0

ip nat inside

[Aref Alsouqi]

Do g0/0.1 and g0/2.1 belong to the same vlan?, if not you should correct the encapsulation configuration on them.

If you can please post your toplogy with all subnet ip addresses and vlans information.

Regards,

Aref

[TristanGude]

a

[El4azlongy]

Hello

I Have My Cisco 2921, And I am Trying to Connect Using USB Serial Port With Putty, And When I am Connect it It Doesn't Show anything in the Putty Screen. Same With Tera.

And when I Removed The Compact Flash and Start IT on, I Found It Connected And Start Reading Information?

So What Is The Issue?

Thank You