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

Erik_Auerswald
Contributor II
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

Ok, very thanks for explanation.

BrandonC
Extreme Employee
Yes, you can use standard CIDR notation (eg, 10.0.20.1/23) when configuring IP addresses on the switch..

Ok, thanks for reply.
GTM-P2G8KFN