Owner's Manual

Chapter 20. IPv4 Unicast Routing | 607
NETGEAR 8800 User Manual
In addition to configuring the number of reserved entries in the LPM tables, the configure
iproute reserved-entries
command configures which entries are stored in which tables.
Table 65 shows the hardware routing table contents for several configurations.
Note: On the NETGEAR 8800 switches that do not support the extended
IPv4 host cache feature, the LPM table does not store IPv4 hosts.
Extended IPv4 Host Cache Management Guidelines
When configuring the extended IPv4 host cache feature, consider the following guidelines:
• The default option configures the switch to store entries for local and remote IPv4 hosts
in the LPM tables. On NETGEAR 8800 switches, the default setting creates room for 48
local and remote IPv4 host entries. This option provides more room for IPv4 multicast and
IPv6 hosts in the L3 Hash table.
• The maximum option reserves all space in the LPM tables for IPv4 and IPv6 routes. This
option provides the maximum storage for IPv4 and IPv6 routes when you do not expect to
store many IPv4 multicast and IPv6 hosts in the L3 Hash table.
Table 64. Hardware Routing Table Configuration Capacities
Table NETGEAR 8800
Switches
Internal LPM 12256
External LPM N/A
L3 Hash 8192
Next Hop 8192
Table 65. Hardware Routing Table Contents
Table NETGEAR 8800 Switches
Internal LPM—Reserved space Entries for IPv4 routes and IPv6 routes.
a
a. IPv6 routes consume two entries.
Internal LPM—Unreserved space Entries for IPv4 local and remote hosts.
External LPM—Reserved space N/A
External LPM—Unreserved space N/A
L3 Hash Entries for IPv4 local and remote hosts, IPv4
multicast entries, and IPv6 local hosts.
a
Next Hop MAC address and egress port information for
the entries in the other tables.