Nokia 4A0-106 - Nokia Virtual Private Routed Networks

To reduce the number of VPRN tunnels required.

To allow routes to be exchanged between all, or selected, sites of one VPRN, and all, or selected, sites of a second VPRN.

To simplify the administration of multiple VPRNs.

To allow network access between the headquarter sites of each VPRN service and a shared VPRN service offered by a third party.

On the CE under the RIP context

On the PE under the BGP context

On the PE under the RIP context

On the CE under the BGP context

This policy is not required

Full mesh between all CE, PE and P devices

Full mesh between PE and P devices

Full mesh of P devices

Full mesh of PE devices

Full mesh between PE and CE devices

One label per route

One label per next-hop

One label per VRF

One label per prefix

One label per tunnel

CSC eliminates the need for customer carriers to build and maintain their own MPLS backbone.

CSC is also known as carrier's carrier or carrier serving carrier.

The customer carrier provides VPN or Internet services to its end-customers.

A CSC VPRN is configured on the customer carrier's CSC-CE routers.

Static

RIP

OSPF

IS-IS

MP-BGP

BGP

Reduced number of VPN tunnels that need to be managed

Centralized filtering policies with the introduction of a hub site

Optimal routing between all sites

Limited configuration required on the hub PE device

The Nokia 7750 SR allows the setting of the maximum number of routes that can be accepted in a VRF for a VPRN service.

The "maximum-routes" command is used to specify the maximum number of remote routes that can be held within a VRF for a VPRN service.

When the "maximum-routes" command is used with the "log-only" parameter, new routes are still learned.

Once the "threshold" value is reached, no new routes are added to the VRF.

The protocol is configured under the config>service context

The protocol is configured under the global router context

The interface leading to the PE is defined as a protocol neighbor

The routing protocol used must be the same as the routing protocol used at other CE-PE locations in the same VPN.

A routing policy may or may not be required depending on the routing requirements and routing protocol

PE1

PE2, PE3 and PE4

PE1, PE2, PE3 and PE4

This command is not required for the configuration of this PE hub and spoke VPRN.