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- Editor's note: Minutes received 4/7/93. These minutes have not been edited
- and the attendee list has not been appended.
-
- Reported by Dino Farinacci
-
- Notes from the isis working group meeting at Columbus, Apr 1 1993.
-
- Thurs. 9:30-12:00 IS-IS
- Standards progression (integrated IS-IS)
- - Proposed standard for over 2 years - what should we do.
- - Write an interworking proof.
- - Testing all features.
-
- Radia presented IS-IS multicasting
- - The scheme she describes was designed in DECNET Phase V but
- was taken out.
- -- Uses multicast bit in the system-id field of an NSAP.
- Packet is routed to area and then distributed across a
- multicast tree in the area. (Mutlicast to whole area).
-
- Radia presented NLSP differences from IS-IS
- - Latch on to DR so changes are minimized
- - Radia proposes a configuration knob to have a priority
- increase after a router becomes DR.
-
- Radia presented the multi-area router concept
- - A router has connection to two LANs that are in different
- areas. The router internally are two virtual routers.
-
- Radia presents how IS-IS can implement multiple levels of hierarchy
- - Nested circles can be configured to multiple levels of
- abstraction. This allows IS-IS to scale to larger routing
- domain sizes.
-
- Discussed the issue about a maximum of 256 LSP fragments
- - Discussed increasing the size of the LSP fragment number
- from the LSPID.
- - Discussion shifted to scaling issues related to injecting
- externals into an IGP.
-
- Range of metrics in IS-IS
- - Increase metric to 16-bits for internal and 32-bits for external
-
- IS-IS over NBMA WANs
- - Radia describes NSAP addresses that have E.164 IDPs where
- you can "get routing for free". This can be used for CLNP.
- - For non-CLNP protocols, Radia wants to avoid SMDS multicast
- because of the coordination required with the phone company.
- - Each node knows about a subset of the routers on the WANs. With
- transitive closure a DR is elected and responsible for
- knowing all nodes on the WAN. The non-DR routers flood LSPs
- to the DR only and the DR floods to the rest of the nodes.
-
-