Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) - Manual (Page 413)

Multi-Service IronWare Routing Configuration Guide 385
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Maximum route limitations
• If the metric value is the same, then routes learned in local VRF will be used to break the tie.
• If the metric value is the same, and a local VRF route is not available, then the lowest nexthop
address will be used to break the tie.
• If the nexthop address is the same, then the oldest route will be used to break the tie.
Maximum route limitations
When importing routes from other VRFs, there may be a chance that routes are not added due to a
limitation on the number of routes that the destination VRF can support. This may happen in the
following cases:
9. The source VRF is importing more routes than the destination VRF can support.
10. The destination VRF is configured to limit the number of routes with a configuration command
such as address-family ipv4 max-route or address-family ipv6 max-route.
11. While processing the route-map changes, you exceed the number of routes that the VRF can
support because you process the new set of routes before deleting the old set of routes.
For any of the above situations, execute the clear ip route VRF dest-vrf-name followed by the import
src-vrf-name command to recover.
Configuring Inter-VRF routing
The following configuration steps allow the VRF VPN to import IPv4 routes from the default-vrf
brcd-sj.
Brocade(config)#vrf vpn
Brocade(config-vrf-vpn)#address-family ipv4
Brocade(config-vrf-vpn-ipv4)#import routes vrf default-vrf route-map brcd-sj
The following configuration allows the default-vrf to import IPv4 routes from the non-default VRF
VPN after satisfying conditions specified in the route-map brcd-sj.
Brocade(config)#ip import routes vrf vpn route-map brcd-sj
From non-default VRF, user can configure the command in address-family mode.
Syntax: import routes vrf vrf-name route-map route-map-name
This command imports the IPv4 routes from src-vrf to dest-vrf. The route-map import-map is
applied while importing the routes.
Syntax: import routes vrf src-vrf route-map import-map
From default VRF the commands for IPv4 and IPv6 are as below.
These commands import the IPv4 and IPv6 routes from src-vrf to default-vrf using the route-map
import-map.
Brocade(config)#ip import routes vrf src-vrf route-map import-map>
Brocade(config)#ipv6 import routes vrf src-vrf route-map import-map