Nokia VPRN case studies
Nokia VPRN · Put your knowledge to work in context.
The Nokia VPRN exam is a vendor-focused certification-style assessment for network engineers who design, deploy, and operate IP/MPLS virtual private routed networks on Nokia service router platforms. It suits service-provider transport engineers, enterprise WAN architects, and data-center interconnect specialists who already hold solid routing fundamentals and want to demonstrate practical depth in Nokia's IP portfolio. The Nokia VPRN case studies are 5 cases and about 3,670 words.
1VPRN route valid in BGP but absent from the route table
A service provider runs SR OS 22.10 on PE-1 and PE-2 in AS 65000, with RR-1 as route reflector. VPRN 100 serves a rail customer: RD 65000:100, vrf-target target:65000:100 on both PEs.
714 words, about 4 min2MSTP region mismatch after an aggregation switch replacement
Four Nokia 7250 IXR-R6 switches form a metro aggregation ring SW1–SW2–SW3–SW4–SW1 on 10G links, carrying 40 VLANs for residential and business services. MSTP runs with region name METRO-AGG, revision 3, instance 1 for VLANs 10-19, instance 2 for VLANs 20-39, and the CIST for the rest.
735 words, about 4 min3Workflow fails on three of twelve nodes during a VPRN rollout
An operator uses Nokia NSP 23.4 with NFM-P and Workflow Manager to manage 60 SR OS PEs. A workflow named create-vprn-100 reads a CSV of 12 PE hostnames and, for each, applies a CLI-based template that creates VPRN 100 with an RD, route target, two SAPs and an iBGP session to a route reflector.
707 words, about 4 min4Strict uRPF breaks asymmetric traffic on a dual-homed VPRN
VPRN 200 serves a logistics customer. CE-A at the main site is dual-homed by eBGP in AS 65100 to PE-1 and PE-2, advertising 10.20.0.0/16.
742 words, about 4 min5Anycast gateway MAC causes EVPN MAC flapping between DCGWs
Two data-center gateway PEs, DCGW-1 and DCGW-2, connect a VXLAN EVPN leaf-spine fabric to an MPLS WAN. VPRN 500 is stretched across both; the default gateway for VLAN 50 is anycast 10.50.0.1/24 with virtual MAC 00:00:5e:00:01:01 configured identically on both DCGWs, VNI 10500.
772 words, about 4 min