Configuring SDM Regions, Lookup Type | Cisco Systems 15310-MA

Chapter 12 Configuring the Switching Database Manager on the ML-Series Card

Configuring SDM

•Longest-match region—Each longest-match region consists of multiple buckets or groups of Layer 3 address entries organized in decreasing order by mask length. All entries within a bucket share the same mask value and key size. The buckets can change their size dynamically by borrowing address entries from neighboring buckets. Although the size of the whole application region is fixed, you can reconfigure it.

•Weighted-exact-match region—The weighted-exact-match region consists of exact-match-entries with an assigned weight or priority. For example, with QoS, multiple exact match entries might exist, but some have priority over others. The weight is used to select one entry when multiple entries match.

Table 12-1lists default partitioning for each application region.

Table 12-1	Default Partitioning by Application Region

Application Region		Lookup Type	Key Size	Default Size

IP Adjacency		Exact-match	64 bits	300 (shared)

IP Prefix		Longest-match	64 bits	300 (shared)

QoS Classifiers		Weighted exact-match	64 bits	300 (shared)

IP VRF Prefix		Longest prefix match	64 bits	300 (shared)

IP Multicast		Longest prefix match	64 bits	300 (shared)

MAC Addr		Longest prefix match	64 bits	8192

Access List		Weighted exact match	64 bits	300 (shared)

Configuring SDM

This section describes SDM region size and access control list (ACL) size configuration. The commands described in this section are unique to the switching software. Configuration changes take place immediately on the ML-100T-8 card.

Configuring SDM Regions

To configure SDM maximum size for each application region, perform the following procedure, beginning in global configuration mode:

	Command	Purpose
Step 1
Step 1	ML_Series(config)# sdm size	Configures the maximum number of entries for an SDM
	region-name number-of-entries	region.
Step 2
Step 2	ML_Series(config)# end	Exits to privileged EXEC mode.

An example of this is shown in Example 12-1.

Example 12-1 Limiting the IP-Prefix Region to 2K Entries

ML_Series # configure terminal

ML_Series(config)# sdm size ip-prefix 200

ML_Series(config)# end

Cisco ONS 15310-CL and Cisco ONS 15310-MA Ethernet Card Software Feature and Configuration Guide R8.5

12-2	78-18133-01

15310-CL, 15310-MA specifications

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Cisco Systems 15310-MA, 15310-CL Configuring SDM Regions, Lookup Type, Default Size, 12-2

Models: 15310-CL 15310-MA

Lookup Type

Default Size

Configuring SDM

Configuring SDM Regions

Command

An example of this is shown in Example 12-1.

Example 12-1 Limiting the IP-Prefix Region to 2K Entries

12-2

15310-CL, 15310-MA specifications