Sure Pass Exam 300-420 PDF

Overlay tunnels that connect isolated IPv6 networks can be considered a final IPv6 network architecture.

Overlay tunnels should only be considered as a transition technique toward a permanent solution.

Overlay tunnels can be configured only between border devices and require only the IPv6 protocol stack.

Overlay tunneling encapsulates IPv4 packets in IPv6 packets for delivery across an IPv6 infrastructure.

    They are sent from the master router and standby routers.

    They include VRRP timer information.

    They are sent only from the master router.

    They include priority information.

    They are sent every three seconds by default.

Use BGP AS-path prepending to influence egress traffic and use MED to influence ingress traffic from the branch.

HSRP priorities must match the OMP routing policy to prefer one WAN Edge over the other.

Traffic must be symmetrical as it egresses the WAN Edges and returns from remote sites for DPI to function properly.

Configure BFD between WAN Edge routers to detect sub-second link failures.

VPNv4

IPv4 unicast

L2VPN VPLS-VPWS

L2VPNEVPN