The internal LPM tables are provided on all platforms. The external LPM tables are available only on BlackDiamond 8900 xl-series modules and Summit X480 switches, and they are supported only when external tables on those switches are configured to support external Layer 3 LPM entries. Because the external tables can be configured to support Layer 2 FDB entries, Layer 3 LPM entries, or ACL entries (or a combination of these), you must be aware of the external table configuration when managing LPM entries.
The ExtremeXOS software manages the content of the hardware tables based on the configuration specified by the following commands:
configure iproute reserved-entries [num_routes_needed|maximum|default] slot [all|slot_num]
configure forwarding external-tables [l3-only {ipv4 | ipv4-and-ipv6 | ipv6} | l2-only | acl-only | l2-and-l3 | l2-and-l3-and-acl | l2-and-l3-and-ipmc | none]
The configure iproute reserved-entries command configures the LPM tables. The configure forwarding external-tables command is available only on BlackDiamond 8900 xl-series modules and Summit X480 switches, and configures the use of the external tables.
The configure forwarding internal-tables [l2-and-l3 | more [l2 | l3-and-ipmc]] command provides the ability to support additional IPv4 and IPv6 hosts and multicast table entries on Summit X450-G2, X460-G2, X670-G2, X770 and BlackDiamond X8 B-series switches.
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