Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide - Manual (Page 193)

TCAM space allocation on FCX and ICX devices (except ICX 6450) (Continued) TABLE 32
Default Maximum Minimum
GRE tunnels 16 64 16
Allocating TCAM space for IPv4 routing information
For example, to allocate 13,512 IPv4 route entries, enter the following command:
device(config)# system-max ip-route 13512
Syntax: system-max ip-route routes
The routes parameter specifies how many IPv4 route entries get allocated. The command output shows
the new space allocations for IPv4 and IPv6. You must save the running configuration to the startup
configuration and reload the device for the changes to take effect.
After the device reloads, the space allocated for IPv4 and IPv6 routing information appears in the device
running configuration in this format:
system-max ip-route 13512
system-max ip6-route 514
NOTE
If you disable IPv6 routing, the TCAM space allocations do not change. If you want to allocate the
maximum possible space for IPv4 routing information, you must configure the TCAM space manually.
Allocating TCAM space for GRE tunnel information
For example, to allocate space for 64 GRE tunnels, enter the following command at the Privileged
EXEC level:
device#system-max gre-tunnels 64
Syntax: system-max gre-tunnels tunnels
The tunnels parameter specifies the number of GRE tunnels to allocate.
Clearing global IPv6 information
You can clear the following global IPv6 information:
• Entries from the IPv6 cache.
• Entries from the IPv6 neighbor table.
• IPv6 routes from the IPv6 route table.
• IPv6 traffic statistics.
Allocating TCAM space for IPv4 routing information
FastIron Ethernet Switch Layer 3 Routing Configuration Guide 193
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