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2 or more subnets in one vlan

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meirhasin
Advisor

2 or more subnets in one vlan

Hello

 

I'm out of Ip's in some VLAN and I want to add more ip's to the VLAN with adding more subnet to the VLAN.

In Cisco there is option to write for example:

 

vlan 10

ip add 10.7.4.1 255.255.252.0

ip add 10.7.76.1 255.255.252.0 secondary

 

 

the secondary gives the ability to combine few subnet in one vlan.

 

How i can make it in HP switches? I have procurve 5406.

 

note: i know that its not the best solution but i cant damage the vlan, i most increase the ip's in someway..

 

Multiple ip's in one vlan is not a new thing, but how i can do it in HP?

 

Thank you!

Regards,
Meir.H
CCNA
MCITP
2 REPLIES
joshkelly13
Occasional Advisor
Solution

Re: 2 or more subnets in one vlan

You would simply enter:

 

vlan 10

ip add 10.7.4.1 255.255.252.0

ip add 10.7.76.1 255.255.252.0

 

Same funtionallity as Cisco, but you dont need to specify "secondary"

 

It's called Multinetting.

 

"Multinetting: Assigning Multiple IP Addresses to a VLAN. For a given
VLAN you can assign one primary IP address and up to seven secondary IP
addresses. This allows you to combine two or more subnets on the same
VLAN, which enables devices in the combined subnets to communicate
normally through the network without needing to reconfigure the IP addressing

in any of the combined subnets."

 

From: page 8-3 of ftp://ftp.hp.com/pub/networking/software/Mgmt-Oct2005-59906023-Chap08.pdf

meirhasin
Advisor

Re: 2 or more subnets in one vlan

Thank you very much,.

Regards,
Meir.H
CCNA
MCITP