Refer to the exhibit. An engineer at a large ISP is troubleshooting suboptimal routing on a customer’s IS-IS network with multiple Level 1-2 routers. The network consists of numerous routers that are configured for MPLS. When IS-IS picks the closest Level 1-2 router to exit the area, suboptimal routing occurs in Area 8 and Area 10. The other IGP protocols are running correctly, and the IS-IS adjacency between routers is established. Which action resolves the issue?
When an IS-IS network consists of multiple Level 1-2 routers, it may lead to suboptimal routing if the closest Level 1-2 router is not optimal for traffic exiting an area. Redistributing Level 2 prefixes into Level 1 on router 2 will ensure that routing information is adequately shared between the levels, allowing for more optimal routing decisions and resolving the issue of suboptimal routing in Area 8 and Area 10.
If we have more L1-L2 routers then "C" will not help. We should redistribute L2 prefixes to L1.
Hmnm, it didn't say that R1 should become a L1/L2 router but instead either a L1 or L2.