SDM Flashcards
What does SDM stand for?
Switching Database Manager.
What is SDM?
SDM allows you to tune shared TCAM partitions and this is only available on some platforms.
What are some common SDM templates?
Default - Balances TCAM partitions.
- *Access** - Maximizes resources to accommodate large number of ACLs.
- *Routing** - Maximizes system resources for IPv4 unicast routing.
- *VLAN** - Disables routing entirely and supports maximum number of unicast MAC addresses.
- *Dual-IPv4-And-IPv6** - Allocates resources evenly between IPv4 and IPv6 and should be used in a dual stack environment.
What configuration command changes the SDM template on a device?
Switch(config)# sdm prefer <template></template>
What is a useful show command that can be used to display the current SDM template?
switch# show sdm prefer
What does the Switching Database Manager do in TCAM?
It configures and manages TCAM partitions.
What does the Feature Manager do in the TCAM?
It merges any ACLs into the TCAM table so that it can be processed at hardware speeds.
Define the SDM.
Switching database manager. Divides the switch’s resources based on tasks.
List the basic SDM templates.
Access (ACLs), default, Dual-ipv4-and-ipv6, Routing and VLAN.
Which statement about the use of SDM templates in a Cisco switch is true?
SDM templates are used to configure system resources in the switch to optimize support for specific features, depending on how the switch is used in the network.
Which SDM template is the most appropriate for a Layer 2 switch that provides connectivity to a large number of clients?
VLAN
A network engineer deployed a switch that operates the LAN base feature set and decides to use the SDM VLAN template. The SDM template is causing the CPU of the switch to spike during peak working hours. What is the root cause of this issue?
The VLAN template disables routing in hardware.
What is the SDM?
Switching Database Manager - configures and prunes TCAM partitions
