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TRILL: Traffic engineering draft-hu-trill-traffic-engineering-00.txt

TRILL: Traffic engineering draft-hu-trill-traffic-engineering-00.txt. Fangwei Hu hu.fangwei@zte.com.cn Jacni Qin jacni@jacni.com Donald Eastlake 3rd d3e3e3@gmail.com Radia Perlman Radia@alum.mit.edu. TRILL TE.

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TRILL: Traffic engineering draft-hu-trill-traffic-engineering-00.txt

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  1. TRILL: Traffic engineering draft-hu-trill-traffic-engineering-00.txt FangweiHuhu.fangwei@zte.com.cn Jacni Qin jacni@jacni.com Donald Eastlake 3rd d3e3e3@gmail.com Radia Perlman Radia@alum.mit.edu TRILL: Traffic Engineering

  2. TRILL TE • TE(Traffic Engineering) is a flexible technique that can enhance the performance of an operational network at both the traffic and resource. • Extension to support TE in TRILL campus TRILL: Traffic Engineering

  3. Overview • An RBridge that is the egress for a traffic engineered route holds an extra nickname which is for TE use. • Regular traffic has a regular nickname as egress and follows a least cost route • TE traffic has a TE nickname as egress and follows a TE route TRILL: Traffic Engineering

  4. Overview • TE path can be statically configured or calculated based on the TE metrics carried by sub-TLVs inside ISIS TLV 22 • The basic routing path and TE routing path share the same forwarding table TRILL: Traffic Engineering

  5. Comparison of TE with MT • MT: • Constrain frames in a particular topology • Support Multi destination and unicast frame • The number of available topologies is limited • TE: • Only support unicast frame • The TE path can be configured or computed based on TE cost • Can support a large number of TE paths TRILL: Traffic Engineering

  6. Comparison with layer 3 IS-IS TE • TRILL TE: • Very simple in implementation • No complicated signal protocol • No explicitly tunnels • "TE Router ID TLV for TRILL" is not required • Layer 3 IS-IS TE: • Use Router ID TLV(TLV 134) • Signal protocol TRILL: Traffic Engineering

  7. TRILL TE Nickname • There are no flag bits available in the Nickname sub-TLV • There are several reasons to mark nicknames (or blocks of nicknames) • Nickname is for TE use • Nickname will be used as ingress (to reduce RPFC state) • Nickname is allowed/prohibited for use in campus or level 1 area… TRILL: Traffic Engineering

  8. END TRILL: Traffic Engineering

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