Juniper Service Provider Routing and Switching Support, Professional

What is the primary mechanism that prevents BGP routing loops?

Your network is configured with a full mesh of MPLS LSPs between all devices. However, when you enter the show route table inet.2 command on any device, no LSP routing information is displayed. Which statement explains why this is occurring?

In your network, you have noticed route oscillation involving an OSPF route. What is the reason?

You notice that an EBGP peering session has terminated and no NOTIFICATION message appears in the traceoptions output. What has happened?

You have recently implemented a new Layer 2 VPN and it is not establishing. The show I2vpn connections command displays an out-of-range state. What is causing this problem?

You are asked to retain several routes from an external BGP neighbor in the routing table on your local router, but you are not allowed to forward traffic to these destinations. You have configured a forwarding table firewall filter to block these routes, and applied it under the (edit forwarding- options] hierarchy, but the routes are still showing up in the forwarding table. What is required to achieve this task?

An OSPF neighbor between routers R1 and R2 is stuck in loading state on R2. What are two causes? (Choose two.)