/mcpData sheet Cisco public © 2025 Cisco and/or its affiliates. All rights reserved. Custom ASIC templates Catalyst 9500X models (C9500X-28C8D and C9500X-60L4D) Beginning with the Cisco IOS XE 17.7.1 release, a custom SDM template allows you to configure several features of the template based on your requirements and not the location of the device in the network. Table 19. Custom template Forwarding Information Base (FIB) configurable values Feature Default value Scale values (min – max) Step units MAC addresses 128,000 32,0001 to 256,000 1,000 IPv4 host routes 32,000 32,0001 to 256,000 1,000 IPv6 host routes 16,000 16,0001 to 128,000 1,000 MPLS labels3 256,000 02 to 512,000 1,000 Security/object groups 32,000 02 to 64,000 1,000 Total resources 608,000 1 Critical features require a minimum allocation to ensure operation. If a custom value is not defined, this value is used. 2 Some (noncritical) features are allowed to have a 0-entry allocation, to allow increased allocation of other features. 3 Per-prefix MPLS labels are limited to 62,000 on Catalyst 9500X models. Learn more about configuring custom SDM templates.