Brocade Communications Systems FastIron X Series User Manual

• Congure a Route Distinguisher (RD) for new VRF instances.
• Congure an IPv4 or IPv6 Address Family (AF) for new VRF instances.
• Congure routing protocols for new Multi-VRF instances.
• Assign VRF instances to Layer 3 interfaces.
FastIron considerations for Multi-VRF
When a VRF is
congured, a warning message species that any conguration 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 congured 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
conguration does not allow space for VRF routing tables. As a result, you must modify VRF-related system-max
values before conguring a VRF instance. The following table lists commands that congure system-max values at the global level.
TABLE 110 Commands for
conguring system-max values
Command Description
ip-vrf Congures maximum VRF instances supported by the software.
ip-route Congures maximum IPv4 routes, used to initialize hardware during
system init.
ip6-route Congures maximum IPv6 routes, used to initialize hardware during
system init.
ip-route-default-vrf Congures maximum IPv4 routes to be allocated for the default VRF
instance.
ip6-route-default-vrf Congures maximum IPv6 routes to be allocated for the default VRF
instance.
ip-route-vrf Congures default maximum IPv4 routes to be allocated per user-dened
VRF.
ip6-route-vrf Congures default maximum IPv6 routes to be allocated per user-dened
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 (12,000 on a Brocade ICX 6610) 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 default and maximum system-max values related to VRF for the FastIron conguration example, on a
Brocade ICX 6610.
TABLE 111
Default and maximum system-max values related to Multi-VRF
System Parameter Default Maximum
ip-route 12000 15168
Multi-VRF overview
FastIron Ethernet Switch Layer 3 Routing
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Brocade Communications Systems FastIron X Series Specifications

General

Brand	Brocade Communications Systems
Model	FastIron X Series
Category	Switch
Language	English