Tunnel Termination

Tunnel termination classifies and decapsulates incoming packets. Tunnel termination can be done using route-map.

The packets are classified based on configured header parameters and then SAP IDs are assigned. Extreme 9920 software decapsulates packets based on parameters that you configure. There are two types of packet decapsulation:

• Non-transport tunnel termination
• Transport tunnel termination

Note

• Starting with release 21.1.1.0, Extreme 9920 software supports outer VXLAN headers.
• Starting with release 21.1.2.0, Extreme 9920 software supports IPv6 GRE tunnel termination and MPLS Segment Routing in outer tunnel termination.

Both transport and non-transport tunnel terminations support IPv4 and IPv6 traffic. Based on the type of incoming traffic and configured tunnel termination parameters, the following actions are carried out:

• Termination
• Scope-shift
• Packet classification

The following configurations are required for successful tunnel termination:

• Encapsulation parameter configurations (L2 and L3 parameters for GRE header)
• Egress group configurations
  • Attaching egress object to egress group
• ACL configurations
• Ingress group configurations (for non-transport tunnel terminations)
• Transport tunnel configurations (for transport tunnel terminations)
• Interface configurations
• Route-map configurations

Note

Extreme 9920 software, release 21.1.2.0 supports only 32 bits out of 128 bits of IPv6.