Brocade Communications Systems ICX 7250 series, Руководство по настройке

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NOTE
By default, the router ID is the IPv4 address configured on the lowest-numbered loopback interface. If the device does not have
a loopback interface, the default router ID is the highest-numbered IPv4 address configured on the device.
When you establish an area virtual link, you must configure it on both ends of the virtual link. For example, imagine that ABR1 in Area 1
and Area 2 is cut off from the backbone area (Area 0). To provide backbone access to ABR1, you can add a virtual link between ABR1
and ABR2 in Area 1 using Area 1 as a transit area. To configure the virtual link, you define the link on the router that is at each end of the
link. No configuration for the virtual link is required on the routers in the transit area.
Virtual links cannot be configured in stub areas and NSSAs.
Virtual link source address assignment
When devices at both ends of a virtual link communicate with one another, a global IPv6 address is automatically selected for each
transit area and this address is advertised into the transit area of the intra-area-prefix LSA.
The automatically selected global IPv6 address for a transit area is the first global IPv6 address of any loopback interface in the transit
area. If no global IPv6 address is available on a loopback interface in the area, the first global IPv6 address of the lowest-numbered
interface in the UP state (belonging to the transit area) is assigned. If no global IPv6 address is configured on any of the OSPFv3
interfaces in the transit area, the virtual links in the transit area do not operate. The automatically selected IPv6 global address is updated
whenever the previously selected IPv6 address of the interface changes, is removed, or if the interface goes down.
NOTE
The existing selected virtual link address does not change because the global IPv6 address is now available on a loopback
interface or a lower-numbered interface in the transit area. To force the global IPv6 address for the virtual link to be the global
IPv6 address of a newly configured loopback, or a lower-numbered interface in the area, you must either disable the existing
selected interface or remove the currently selected global IPv6 address from the interface.
OSPFv3 route redistribution
Routes from various sources can be redistributed into OSPFv3. These routes can be redistributed in a number of ways.
You can configure the device to redistribute routes from the following sources into OSPFv3:
• IPv6 static routes
• Directly connected IPv6 networks
• BGP4+
• RIPng
You can redistribute routes in the following ways:
• By route types. For example, the Brocade device redistributes all IPv6 static routes.
• By using a route map to filter which routes to redistribute. For example, the device redistributes specified IPv6 static routes only.
NOTE
You must configure the route map before you configure a redistribution filter that uses the route
map.
NOTE
When you use a route map for route redistribution, the software disregards the permit or deny action of the route map.
OSPFv3 route redistribution
Brocade FastIron Layer 3 Routing Configuration Guide
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