TRILL Capabilities

TRILL provides a flat core network that is easily scalable, manageable, configurable, and auto discoverable, that is resilient and provides efficient link usage. TRILL borrows from Layer 2 switching and Layer 3 routing, and concepts from MAC-in-MAC Bridging and MPLS-VPLS tunneling. TRILL uses the link state path computation to calculate the best path route based on link cost to every node in the network. TRILL functionality consists of the following features:

Perform RBridge TRILL packet forwarding function.
Support TRILL and native Ethernet forwarding simultaneously on the same port.
Provide 4K VLAN connectivity across backbone.
Support up to eight ECMP next hop RBridge load share entries
TTL hop-count validation.
Ability to verify link MTU size using MTU probes.
Auto creation of RBridge and Distribution Tree nicknames.
Auto discovery of RBridges in the TRILL network.
Use of pseudonodes to simplify TRILL topologies on shared links.
Control plane support for broadcast and multicast traffic.
Support for one distribution tree.
Capability to prune VLANs nodes from distribution trees.
Ability to assign appointed forwarders for VLANs in a load sharing configuration.
Configurable TRILL protocol timers.
The following features are not supported in the initial ExtremeXOS TRILL release:
- EASDI protocol
- Fine Grain Labeling (FGL)
- Active-Active AF status
- MAC learn limiting of RBridge FDB entries
- VLAN mapping a TRILL Access VLANs
- Use of CFM and or BFD to protect TRILL links
- L3 interfaces defined on Access VLANs
- Multicast Prunning support is not available.

Published March 2020prev | next

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