Nokia NRS II Composite (IS-IS) case studies
Nokia NRS II Composite (IS-IS) · Put your knowledge to work in context.
The Nokia NRS II Composite (IS-IS) is an independent-study target for network engineers who already work with IP/MPLS routing and want to demonstrate depth in Intermediate System to Intermediate System as implemented on Nokia SR OS. Candidates typically hold the Nokia NRS I level or equivalent hands-on experience, and use this exam to validate that they can design, configure and troubleshoot IS-IS in service-provider and large enterprise networks. The Nokia NRS II Composite (IS-IS) case studies are 5 cases and about 3,604 words.
1Init State After an MTU Change on a Point-to-Point Core Link
Two 7750 SR routers, R1 (SR-12) and R2 (SR-7), are connected by a 10G point-to-point core link. Both interfaces run IS-IS level 2 only, with default hello timers (10/30) and default hello padding.
764 words, about 4 min2Duplicate System ID Across Areas During an OSPF-to-IS-IS Migration
An enterprise is migrating from OSPF to IS-IS and has defined three areas: 49.0001 (core), 49.0002 (data center), and 49.0003 (campus). The NET template is 49.000X.0100.0000.000Y.00, where Y is the router number.
678 words, about 3 min3Mesh-Group Flooding Optimization in a Seven-Router Full Mesh
A metro service provider runs a full mesh of seven PE routers (three 7750 SR-12, four 7750 SR-7) connected by 21 point-to-point 10G Ethernet links. All routers are in the same IS-IS level-2 area and advertise about 1,200 prefixes in roughly 450 LSPs.
768 words, about 4 min4Partial Wide-Metrics Deployment Breaks Narrow-Only Edge Reachability
An ISP backbone has core routers A and B and edge routers C and D. A connects to B over 10 Gbps, B connects to D over 10 Gbps, and A connects to D directly over 1 Gbps.
699 words, about 3 min5IPv6-Only Links and Multi-Topology IS-IS Mismatch
A dual-stack network with five SR OS routers uses IS-IS level 2 for both IPv4 and IPv6 in single-topology mode. Two new aggregation links are IPv6-only because the IPv4 addressing plan is exhausted; the links are configured with IPv6 addresses and IS-IS, and adjacencies come up.
695 words, about 3 min