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Cisco ONS 15310-CL and Cisco ONS 15310-MA Ethernet Card Software Feature and Configuration Guide R8.5
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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 w hole 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 12-1 lists default partitioning for each application region.
Configuring SDM
This section describes SDM region size and access control list (ACL) size configuration. The c ommands
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 proced ure,
beginning in global configuration 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
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 Lon gest 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)
Command Purpose
Step 1 ML_Series(config)# sdm size
region-name number-of-entries
Configures the maximum number of entries for an SDM
region.
Step 2 ML_Series(config)# end Exits to privileged EXEC mode.