Enable the IPv6–Mode Boot Config Flag

Enable this flag to support IPv6 routes with prefix-lengths greater than 64 bits.

This flag is disabled by default. Use this procedure to enable (set to true) the IPv6-mode boot config flag.

When the IPv6-mode boot config flag is enabled, the maximum number of IPv4 routing table entries decreases. For scaling information, see Fabric Engine Release Notes.

Procedure

  1. In the navigation pane, expand Configuration > Edit,
  2. Select Chassis.
  3. Select the Boot Config tab.
  4. Select the EnableIpv6Mode check box.
  5. Select Apply.
  6. Save the configuration, and then reboot the switch for the change to the IPv6-mode boot config flag to take effect.
9039040-00 Rev AB