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Setting One port in mutiple VLAN

I there a way to set up one port to belong to multiple vlan on 3550 with EMI.

thanks

1 ACCEPTED SOLUTION

Accepted Solutions
Bronze

Re: Setting One port in mutiple VLAN

Set up trunking on the 3550 and two subinterfaces on each router:

3550---TRUNK---R1 fa0/1

|

|

|

----TRUNK---R2 fa0/1

Then on R1:

fa0/1.2

encap isl 2

ip add 192.168.1.1

fa0/1.3

encap isl 3

ip add 192.168.2.1

and on R2:

fa0/1.2

encap isl 2

ip add 192.168.1.254

fa0/1.3

encap isl 3

ip add 192.168.2.254

You should be able to get from R1 fa0/1.1 and fa0/1.2 to R2 fa0/1.1 and R2 fa0/1.2

More on trunking:

http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12114ea1/3550scg/swvlan.htm#1200245

http://www.cisco.com/en/US/tech/tk389/tk390/technologies_tech_note09186a00800949fc.shtml

3 REPLIES
New Member

Re: Setting One port in mutiple VLAN

Trunking the port will allow you to set which vlans it can belong to.

conf t

int f0/30

switchport truck allow ?

Re: Setting One port in mutiple VLAN

Let me explain it in more detail.

I have 2 Router which are going to same location via two different Telco, they are running VRRP. They both have one ethernet interface connecting to different vlans(2&3). Each router also has a sub interface which has ip from the other networks. These switches will not doing IP Routing!

vlan 2 = > 192.168.1.1

vlan 3 = > 192.168.2.1

R1 e0/1 => 192.168.1.254

R1 e0/1.1 => 192.168.2.253

R2 e0/1 = > 192.168.2.254

R2 e0/1.1 => 192.168.1.253

I am plugging these int to ports on vlan 2 and vlan 3. How can i be able to ping all the interfaces(1.254,1.253,2.254,2.253).

thanks

Hope this helps

Bronze

Re: Setting One port in mutiple VLAN

Set up trunking on the 3550 and two subinterfaces on each router:

3550---TRUNK---R1 fa0/1

|

|

|

----TRUNK---R2 fa0/1

Then on R1:

fa0/1.2

encap isl 2

ip add 192.168.1.1

fa0/1.3

encap isl 3

ip add 192.168.2.1

and on R2:

fa0/1.2

encap isl 2

ip add 192.168.1.254

fa0/1.3

encap isl 3

ip add 192.168.2.254

You should be able to get from R1 fa0/1.1 and fa0/1.2 to R2 fa0/1.1 and R2 fa0/1.2

More on trunking:

http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12114ea1/3550scg/swvlan.htm#1200245

http://www.cisco.com/en/US/tech/tk389/tk390/technologies_tech_note09186a00800949fc.shtml

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