Per Vrf Route Limiting; Using Ospf In Ip-Vpns - Alcatel-Lucent 7750 SR OS Service Manual

These transport tunnel mechanisms provide the flexibility of using dynamically created LSPs
where the service tunnels are automatically bound (the "autobind" feature) and the ability to
provide certain VPN services with their own transport tunnels by explicitly binding SDPs if
desired. When the autobind is used, all services traverse the same LSPs and do not allow alternate
tunneling mechanisms (like GRE) or the ability to craft sets of LSP's with bandwidth reservations
for specific customers as is available with explicit SDPs for the service.

Per VRF Route Limiting

The 7750 SR allows setting the maximum number of routes that can be accepted in the VRF for a
VPRN service. There are options to specify a percentage threshold at which to generate an event
that the VRF table is near full and an option to disable additional route learning when full or only
generate an event.

Using OSPF in IP-VPNs

Using OSPF as a CE to PE routing protocol allows OSPF that is currently running as the IGP
routing protocol to migrate to an IP-VPN backbone without changing the IGP routing protocol,
introducing BGP as the CE-PE or relying on static routes for the distribution of routes into the
service providers IP-VPN. The following features are supported:
•
7750 SR OS Services Guide
Transportation of OSPF learned routes as OSPF externals. This feature uses OSPF as the
protocol between the PE and CE routers, however instead of transporting the OSPF LSA
information across the IP-VPN, the OSPF routes are "imported" into MP-BGP as AS
externals. As a result, other OSPF attached VPRN sites on remote PEs receive these via
type 5 LSA.
Virtual Private Routed Network Services
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