
Configuring IP Services
4-16
Figure 4-6. OSPF ASE Routes
Using the External Route Tag in an ASE
An OSPF AS external route advertisement includes an external route tag field.
This field allows boundary routers in an AS to exchange information about
external routes. (The specific nature of this information is outside the scope of
OSPF.)
Note:
The route weight will appear to be a greater value than the route’s
original metric. For this reason, all routers advertising a particular network
must use the same metric type — Type 1 or Type 2. If not, the router that
receives the advertisements may choose the wrong route.
For instructions on using Site Manager to configure a router to use the route weight as
the OSPF metric, see the ASE Metric Support parameter on page 4-38.
EGP Route to
Destination X
BGP Route to
Destination X
OSPF AS
Boundary
Router A
Boundary
Router B
Internal
Router
ASE Routes
Comentários a estes Manuais