1 / 8

IEEE 802.1Qca Path Control and Reservation

Joint IEEE-SA and ITU Workshop on Ethernet. IEEE 802.1Qca Path Control and Reservation. János Farkas , Ericsson. Outline. Background Shortest Path Bridging (SPB) [IEEE 802.1aq, IETF RFC 6329] Path Control and Reservation (PCR) P802.1Qca project goals Explicit Path (EP) establishment

bunme
Download Presentation

IEEE 802.1Qca Path Control and Reservation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Joint IEEE-SA and ITU Workshop on Ethernet IEEE 802.1QcaPath Control and Reservation János Farkas, Ericsson

  2. Outline • Background • Shortest Path Bridging (SPB)[IEEE 802.1aq, IETF RFC 6329] • Path Control and Reservation (PCR) • P802.1Qca project goals • Explicit Path (EP) establishment • Support for reservation and redundancy

  3. Background –Shortest Path Forwarding BR A BR C BR E BR A BR A BR E BR E BR C BR C BR D BR B BR D BR D BR B BR B SPBShortest Path Bridging MSTP Multiple SpanningTree Protocol MSTP Multiple SpanningTree Protocol RSTPRapid SpanningTree Protocol RSTPRapid SpanningTree Protocol Shortest Path Bridging (SPB): each bridge has its own Shortest Path Tree (SPT) Frame forwarding is on the shortest path

  4. Background – Shortest Path Bridging • IEEE 802.1aq SPB is an add-on to IS-IS • Single link state control for large networks • Scalability • High degree of automation • Deterministic multi-path routing for unicast and multicast • Fast convergence • All 802.1 standards supported, e.g. CFM • MEF services natively provided • E-LINE, E-TREE, E-LAN

  5. IEEE P802.1QcaPath Control and Reservation (PCR) Extend IS-IS for bridges beyond shortest path capabilities Explicit paths Bandwidth and stream reservation Redundancy for data flows(protection, restoration) Distribution of control parameters for time synchronization and scheduling

  6. Explicit Paths CB 5 EB 2 EB 2 EB 3 EB 1 EB 4 EB 1 EB 3 EB 4 • Single PCE • e.g. data center network;PCE: application on a VM • Multiple PCEs • e.g. time-sensitive network;PCE: application on bridges Ctrl PDUs PCE VM: VirtualMachine PCE PCE IS-IS IS-IS Path 1 Path 1 Server Path 2 Host 2 Host 1 Path 3 Path 2 Host 4 Host 3 • Explicit Paths(EP) are determined by Path Computation Element(s) (PCE) • Point-to-point • Multipoint (point-to-multipoint or multipoint-to-multipoint • IS-IS installs the explicit paths

  7. IS-IS Support forReservation and Redundancy PCE Request Topology etc. Path(s) IS-IS • Reservation • IS-IS support for Stream Reservation Protocol (SRP) • PCE + IS-IS  Explicit Path • SRP  Reservation along EP • Basic reservation by IS-IS (1 PCE) • Redundancy • Maximum disjoint paths for protection • PCE + IS-IS  Explicit Paths • Protection mechanism on top of the EPs • Loop Free Alternates (LFA): reroute in a few ms

  8. Thank You!

More Related