Displays the current usage statistics of the Longest Prefix Match (LPM) hardware table and the Layer 3 hardware hash table by resource type.
| slot_num | For BlackDiamond 8800 series switches and SummitStack only, this option displays the statistics for the specified slot. |
N/A.
This command shows the current number of IP routes and local and remote IPv4 hosts in the LPM hardware table. It also shows the number of IPv4 unicast, multicast, and IPv6 unicast entries in the Layer 3 hardware hash table. The theoretical maximums for each individual resource type are shown at the bottom of the output. These maximum values cannot all be achieved simultaneously, and individual values might not be reached depending on the addresses or routes in use.
The ExtremeXOS software supports the coexistence of higher- and lower-capacity hardware in the same BlackDiamond 8800 chassis or Summit family switch stack or BlackDiamond X8. To allow for coexistence and increased hardware forwarding, when the number of IPv4 routes exceeds 25,000, the lower-capacity hardware automatically transitions from using LPM routing to forwarding of individual remote hosts, also known as IP Forwarding Database (IP FDB) mode. Higher-capacity hardware continues using LPM routing. Lower-capacity hardware operating in IP FDB mode will be indicated with a d flag in the output of show iproute reserved-entries statistics command, indicating that only direct routes are installed. For more information, see Coexistence of Higher- and Lower-Capacity Hardware in the ExtremeXOS 16.2 User Guide.
The following example displays usage statistics for the LPM and Layer 3 hardware tables:
# show iproute reserved-entries statistics |-----In HW Route Table----| |--In HW L3 Hash Table--| # Used Routes # IPv4 Hosts IPv4 IPv4 IPv6 IPv4 Slot Type IPv4 IPv6 Local Remote Local Rem. Loc. MCast ---- ---------------- ------ ----- ------ ------ ----- ----- ---- ----- 1 G48Pe 100 20> 372 0 613 0 34 12 2 G48Pe 100 20> - - 637 0 34 12 3 G48Ta 100 20> 386 0 2114 0 34 12 4 G48Ta 100 20> - - 2253 0 34 12 5 G8X 100 - - - 2253 0 - 12 6 - - - - - - - - 7 10G4Xa 100 20> 2288 0 212 0 34 12 8 10G4Xa 100 20> 2500 0 0 0 34 12 9 G48Ta - - - - - - - - 10 8900-10G8X-xl 100 20> 2500 0 0 0 34 12 Theoretical maximum for each resource type: "e"-series 480 240 512 512 2045 2048 1024 *2048 "c"-series 12256 6128 12256 12288 8189 8192 4096 *6000 "xl"-series 262112 8192 260000 40960 16381 16384 8192 *6000 original 12256 n/a n/a n/a 8189 8188 n/a *3000 Flags: (!) Indicates all reserved route entries in use. (d) Indicates only direct IPv4 routes are installed. (>) Some IPv6 routes with mask > 64 bits are installed and do not use entries in the internal HW Route Table. (R) IPv6 hosts in external HW Route Table. (*) Assumes IP Multicast compression is on.
This command was first available in ExtremeXOS 12.1.
Support for additional IPv4 local host entries was added with the distributed IP ARP feature for BlackDiamond X8, and BlackDiamond 8000 c- and xl-series modules in ExtremeXOS 12.5.
This command is available on BlackDiamond X8, BlackDiamond 8000 series modules, SummitStack, and Summit X440, X460, X480, X670, and X770 switch families.
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