89 lines
2.7 KiB
Text
89 lines
2.7 KiB
Text
Core
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~~~~
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* right usage of DBG vs. debug
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- TOS not supported by kernel -> automatically drop routes with TOS<>0
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- use -freg-struct-return ?
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- fake multipath?
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- config file: symbolic constants?
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- counters (according to SNMP MIB?)
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- generation of subnet mask ICMP's for v6?
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- ipv4: recognize site scope addresses?
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- ifdef out some debugging code?
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- better memory allocators
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- default preferences of protocols: prefer BGP over OSPF/RIP external routes?
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- all internal tables are in host order
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- secondary addresses -> subinterfaces
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- check if all protocols set proper packet priorities and TTL's.
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- filter: logging of dropped routes (?)
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- limitation of memory consumption: per-process and total (?)
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- alloca
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- adding of route: clear all bits not covered by masklen
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- switch: generate default route only if at least one BGP connection exists
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- "interface kill" list
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- route recalculation timing + flap dampening (?)
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- "generate default route" switch for all IGP's
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- running protocol on an interface:
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- interface is not required to exist
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- can specify a wildcard pattern or an interface list
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- re-configuration: restart of affected routing protocols (shutdown mode)
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- Check incoming packets and log errors!!
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- implement snprintf etc. and clean up debugging and logging functions
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RIP
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~~~
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- RIP: export-only and import-only mode?
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- drop RIPv1 (Historic protocol)?
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- Route Tag
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- limit routing table xfer (frequency, only to neighbors)
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- multicast on/off
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- remember routes for all neighbors?
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OSPF
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~~~~
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- Dijkstra: use Fibonacci heaps?
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- point-to-point interface with address: advertise as stub network
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- static routes: stub networks?
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- modes: PtP, PtP-unnumbered, Broadcast, NBMA, point-to-multipoint
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- importing of device routes for networks where we don't run OSPF
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- tie breaking for equal type 2 ext metrics by using internal (type 1) metric
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- SPF tree recalc timing (per-area timers?)
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- aggregation: specify network list for each area
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- stub area: either no external routes or only default route
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- automatic generation of external route tags (RFC1403)
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BGP
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~~~
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- in, local, out RIB
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- maxsize=4096
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- detection of loops
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- aggregation, ATOMIC_AGGREGATE
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- communities
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- confederations
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- attributes must be sorted!
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- re-export of NEXT_HOP attribute
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- BGP session over currently down interface
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- route flap dampening?
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- LOCAL_PREF attribute
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- error notification received -> log error
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- set TTL to 1 (configurable?)
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- consulting IGP for next-hop information? (what if it changes?)
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- inter-advertisement delay???!
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- normalize (sort) incoming AS-SET's
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- maximum length of AS paths
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- expected neighbor AS
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- hold time
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- idle timer after error: initial value, exponential growth, maximum value
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- import of IGP routes (use external route tags from OSPF)
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