Extended IPv4 Host Cache Management Guidelines

When configuring the extended IPv4 host cache feature, consider the following guidelines:
Note

Note

If no IPv4 route is found in the LPM table and IPv4 unicast packets are slow-path forwarded for a given remote host, an IPv4 entry is created for the remote host in either the L3 hash table or LPM table. The hardware does not cache entries for remote IPv6 hosts, so IPv6 routes take precedence over IPv4 routes.