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 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. 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 (forwarding database)) 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 22.4 User Guide.
The following example displays usage statistics for the LPM and Layer 3 hardware tables:
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Download EPUB# show iproute reserved-entries statistics
|-----In HW Route Table-----| |-------In HW L3 Hash Table------|
# Used Routes # IPv4 Hosts IPv4 IPv4 IPv6 IPv4 IPv6
Slot Type IPv4 IPv6 Local Remote Local Rem. Local MCast MCast
---- --------------- ------- ------ ------ ------ ----- ------ ----- ------ ------
1 - - - - - - - - -
2 - - - - - - - - -
3 X670G2-48x-4q 2546 1565> 358 0 2 0 23 156 284
4 - - - - - - - - -
5 X670G2-48x-4q 3553 1565> 353 0 0 0 23 156 284
6 - - - - - - - - -
7 - - - - - - - - -
8 - - - - - - - - -
Theoretical maximum for each resource type:
X440G2 480 240 512 512 1021 4096 1021 * 2048 * 1024
X620 480 240 512 512 1533 4096 1533 * 2048 * 1024
X460G2 12256 6128 12288 12288 40958 49152 24576 * 24576 * 12288
X450G2 16352 8176 16384 16384 22526 28672 14336 * 14336 * 7168
X460G2-16MP 16352 8176 16384 16384 49152 49152 24576 * 24576 * 12288
X870 16352 8176 16384 16384 53246 73728 32765 * 36864 * 18432
X670G2, X770 16352 8176 16384 16384 98302 147456 49149 * 73728 * 36864
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.
(M) IPMC entries stored in L2 MAC Table when lookup-key is 'mac-vlan'.
This command was first available in ExtremeXOS 12.1.
This command is available on the Summit X450-G2, X460-G2, X670-G2, X770, and ExtremeSwitching X440-G2, X620, X690, X870 series switches.