Brocade Communications Systems ICX 7250 series, Руководство по настройке

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• (Optional) Configure a Route Distinguisher (RD) for new VRF instances.
• Configure an IPv4 or IPv6 Address Family (AF) and Neighbor Discovery Protocol for new VRF instances.
• Configure routing protocols for new Multi-VRF instances.
• Assign VRF instances to Layer 3 interfaces.
FastIron considerations for Multi-VRF
When a VRF is configured, a warning message specifies that any configuration existing on the interface is deleted.
When you assign a VRF instance to a static or dynamic LAG, the following rules apply.
• If the LAG is deployed, the primary port can be assigned to a nondefault VRF.
• The dynamic LAG must be configured before any of its ports are assigned to a nondefault VRF routing instance, and all
members of the trunk must be in the default VRF.
• Once a dynamic LAG is deployed, all ports are in a LACP blocking state, until the LAG state converges to the forwarding state.
• When a dynamic LAG is undeployed, the primary port remains in the VRF to which it was assigned, but all secondary ports
revert to the default VRF.
VRF-related system-max values
The default FastIron configuration does not allow space for VRF routing tables. As a result, you must modify VRF-related system-max
values before configuring a VRF instance. The following table lists commands that configure system-max values at the global level.
TABLE 60 Commands for configuring system-max values
Command Description
ip-vrf Configures maximum VRF instances supported by the software.
ip-route Configures maximum IPv4 routes, used to initialize hardware during
system init.
ip6-route Configures maximum IPv6 routes, used to initialize hardware during
system init.
ip-route-default-vrf Configures maximum IPv4 routes to be allocated for the default VRF
instance.
ip6-route-default-vrf Configures maximum IPv6 routes to be allocated for the default VRF
instance.
ip-route-vrf Configures default maximum IPv4 routes to be allocated per user-defined
VRF.
ip6-route-vrf Configures default maximum IPv6 routes to be allocated per user-defined
VRF.
This example includes two VRF instances for IPv4 and two VRF instances for IPv6. For the IPv4 partition, the default value for IPv4
TCAM allocation is decreased to 10,000. IPv6 TCAM allocation can then be increased from the default value of 908 to 1408. Both
IPv4 and IPv6 VRF instances are planned to allocate 500 routes each.
The following table lists the ip-vrf configuration limits for the system-max command, by line card and platform.
TABLE 61 Configuration limits for ip-vrf with the system-max command
Hardware Minimum Default Maximum
FSX 3rd-generation line card 16 128 128
Multi-VRF overview
Brocade FastIron Layer 3 Routing Configuration Guide
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