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Are the L3 extreme switches compatible with Variable Length Subnet Masking (VLSM)?

Are the L3 extreme switches compatible with Variable Length Subnet Masking (VLSM)?

Obernan_Cavalca
New Contributor

‎11-16-2017 04:41 PM

Are the L3 extreme switches compatible with Variable Length Subnet Masking (VLSM)?
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4 REPLIES 4

Erik_Auerswald
Contributor II

‎11-17-2017 08:32 AM

Hi,

the VLSM idea is from times back when classful IP routing was used. Old routing protocols did not send a subnet mask with the network address. But all modern routing protocols (including RIPv2 which is not really modern) include a network mask (or prefix length) and fully support CIDR (classless inter-domain routing) which includes all the features associated with VLSM (variable length subnet masks).

Extreme switches and routing protocols support classless IP routing by default.

Thanks,
Erik
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Obernan_Cavalca
New Contributor
In response to Erik_Auerswald

‎11-17-2017 08:32 AM

Ok, very thanks for explanation.
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BrandonC
Extreme Employee

‎11-16-2017 04:55 PM

Yes, you can use standard CIDR notation (eg, 10.0.20.1/23) when configuring IP addresses on the switch..
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Obernan_Cavalca
New Contributor
In response to BrandonC

‎11-16-2017 04:55 PM

Ok, thanks for reply.
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GTM-P2G8KFN