SDM (Switch Database Manager)

SDM Stands for Switch Database Manager.

Multi-Layer Switches provides switching as well as routing functions. SDM is used to manage the memory usage on multi-layer switches (Memory should be assigned for routing or switching).

If you want to use a multi-layer switch for routing function, there is no need to assign memory for storing MAC Addresses.

If you want to use a multi-layer switch for the switching function, there is no need to assign memory for storing routing table entries. In simple terms, SDM allows managing the size of the tables used by multi-layer switches.

There are 4 types of templates used in SDM

1) Default

• This is the default mode used by all the switches.

• The default temple give balance to all functions.

• It support both routing and switching.

• No. of MAC Addresses supported in this template is 6K.

• No. of routes supported in this template is 8k.

2) Routing

• This SDM Template is used when you want to use multi-layer switch mostly for routing functions.

• Most of the memory is allocated to routing function.

• No. of MAC Addresses supported in this template is 3k.

• No. of routes supported in this template is 11k.

3) VLAN

• This SDM Template is used when you don't want routing capabilities on the multi-layer switch.

• Most of the memory is allocated to switching function.

• No. of MAC Addresses supported in this template is 12k.

• No. of routes supported in this template is 0.

4) Access

• This access Template is used when you want to create more ACLS on a Multi-layer switch.

• Most of the memory is allocated for creating Access Control List.

• No. of MAC Addresses supported in this template is 4k.

• No. of routes supported in this template is 6k.

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