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Beginner

Traffic between VLAN.

Dears , 

I have question regarding to control traffic between VLAN.  My VLAN located in Core switch and I need to prevent VLAN 10 from Accessing VLAN 20 and the same time I need VLAN 20 to access VLAN 10.

  Please Advice

3 REPLIES 3
VIP Mentor

Traffic between VLAN.

Hi Mahmood,

how to block access from  vlan 1 to other vlan 2:

access-list 100 deny ip 192.168.1.0 0.0.0.255 192.168.2.0 0.0.0.255

access-list 100 permit ip any any

applied

interface vlan1

ip access-group 100 in

Regards

Please rate if it helps.

Advisor

Traffic between VLAN.

Hi,

if you do this then you will also restrain vlan  2 to speak to vlan 1, don't forget that IP communication is bidirectionnal.

Regards.

Alain

Don't forget to rate helpful posts.

Don't forget to rate helpful posts.
VIP Mentor

Traffic between VLAN.

Hi Alain,

You are right, it will block from both side.

REgards

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