VLANS &  IP Forwarding

Posted on 2011-10-31
Medium Priority
Last Modified: 2012-08-13
Hi All,

Newbie question regarding VLANS:

There are many VLANS set up in my location, when interrogating the switch (Extreme Summit x250e) most of them have "IP Forwarding Enabled"

1) Does this mean that traffic can pass from one VLAN to another
2) If I turn this off, will it stop VLAN 1 "talking" to VLAN 2?


Question by:techmiss
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LVL 18

Expert Comment

ID: 37055658
yes and no.
If you have IP forwarding enabled then the traffic will route directly on the switch if not then it would go up to the core to find its way to that VLAN.
LVL 18

Expert Comment

ID: 37055660
so if you turn it off then it the routing isn't in place somewhere else then it will stop communicating

Author Comment

ID: 37055668
Thanks for your reply, when you say "core" what does that actually mean?

LVL 18

Accepted Solution

irweazelwallis earned 2000 total points
ID: 37055676
a central network switch. I am assuming that there are some central switches that will take care of routing around your VLANS


Author Closing Comment

ID: 37055679
Yes, thanks for your help.

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