IS-IS WG at IETF-81 Quebec City 
     Monday 15:10 - 16:10, Room 202

     WG Chair - Chris Hopps, Dave Ward.
     Notetaker - Acee Lindem, acee.lindem@ericsson.com


  Document Status - See Slides
    - 4 New RFCs!
    - 2 in RFC Ed Queue including IETF 802.1aq
    - 2 New WG Documents 
    - 6 Drafts in  

  802.1aq/Shortest Path Bridging - Paul Unbehagen, ALU  
    - See Slides
    - Cooperation between IEEE 802.1 and IETF IS-IS WG 
    - This was 3rd Interop with 187 nodes with 412 links
    - 4th Interop in a few months 
    - Based on lasted IETF draft -05, focused on SPBM  
    - Tested all SPB TLVs in Interop 
    - Next will interop will include MIBs and bridge priority support 
    - Informational Draft will be produced with recommended defaults
      for 802.1aq and to use ISIS hostname.
    - Tata will host 4th Interop in NJ with transatlantic link
    - Will focus on more extensie 802.1aq and MIBs. 

Wenhu Lu: How will this scale with VPLS? 
          
Paul: Nothing preventing you from using SPB in conjunction with VPLS. 
      SPB is solely a control plane for existing data planes. 

Wenhu: Digest used for determining if network has changed. Does this
       slow down convergence?

Paul: Digest is optional hello element. It not required for convergence
      but may be used for loop detection. 

Dave Allen: The digest is premised on agreeing on digest implies 
            agreement to the root and distance to the root. 
            VPLS - since SPB is not constrained to single link, it can
            provide upstream resilency. 

   
Florin Balus: Agrees with Dave. Should be draft on interoperabilty
              between VPLS and SPB. Could be extended to BGP interop. 

Donald Eastlake: RPF Check requires information not previously 
                 required by any bridging specification. Hence, existing
                 switches could require an upgrade 



    Overlay Transport Virtualization - Dhananjaya Rao, Cisco
      - See slides.   
    
 Floren: What is this solution providing?
 Dhananjaya: Transparent LAN solution
 Chris: OTV solution itself will be presented in the RTGWG. 
 Floren: How does this compare to other transparent LAN solutions?
 Dhananjaya: The differentiator is that it is protocol agnostic. 
 Floren: Overlapp with TRILL and BGP/VPLS solutions. 
 Dhananjaya: Will be presented in RTGWG
 Floren: Should be be presented in L2VPN as well. 
 Dave Allen: Where is this draft and the base draft going?
 Dhananjay: We intend to informational. 
 Dave Allen: You will need IANA. 
 Stewart Bryant: L2VPN is SP specific while this is Over-The-Top 
                 and would be a better fit in RTGWG and will be
                 presented. 
 Floren: There IS overlapp in the data center. 


Possible use of TRILL Use of GENAPPP, Donald Eastlake, Huawei 
       - See slides. 

Les Ginsberg - GENAPP was invented as a way to get extraneous data
               out of the base instance of IS-IS. 
Donald: I don't particularly care if the information is in GENAPP or
        in a Router Capabilities sub-TLV. TRILL uses the RBridge
        channel for OAM. This is to advertise what RBridge channel
        protocols are supported. 
Les: What would happen if you didn't support this? 
Donald: Depending on details, OAM packets intended for RBridges would
        be spewed out multiple ports multicast to end stations. 
Les: No different than advertising what ports are supported? GENAPP
     was invented to use IS-IS as a generic multicast flooding
     protocol. Is this a routing function? 
Donald: What RBridge channel protocols are supported is not a core
        IS-IS routing function but it is part of the TRILL protocol.
        IS-IS is commonly used to advertise information that is not
        part of core IS-IS routing. For example, the TRILL version
        number is provided. 
Steward Bryant: I'm worried about the proliferation of OAM protocols.
                MPLS has a generic OAM channel being extended towards
                Ethernet OAM. This TRILL OAM should copy the MPLS OAM
                and use the same channels. 
Donald: Does MPLS OAM provide an illegal egress nickname or a Hop Count
        expired return code? There are a variety of OAM, particularly
        ICMP like things, specific to TRILL. TRILL can support BFD Echo
        which is not provided by MPLS OAM.
Stewart: There may be unique elements to TRILL but the like elements of
         OAM should be common.

         
 Chris: Dave will be proud we ended on a prime number of minutes - 59!