1. NE80E and router of C corporation enable IS-IS.
2. The neighbor relation between NE80E and Router is established, but they cannoy learn the route of the peer.
1. Carefully check data configuration of both sides and there is no fault.
2. Regarding othere cases, when other network NE80E and C corporation connect, IS-IS cost-style of NE80E is set as wide. But default IS-IS cost-style of NE80E is normal. Change IS-IS cost-style of NE80E as wide. They can learn the rotue of the peer.
3. According to the confirmation of customer engineer, IS-IS cost-style of C corporation is set as wide.