Zhenqiang Li Rong Gu China Mobile Jie Dong Huawei Technologies Export BGP community information in IPFIX draft-li-opsawg-ipfix-bgp-community-01.txt Zhenqiang Li Rong Gu China Mobile Jie Dong Huawei Technologies

Problem to be addressed IP Flow Information Export (IPFIX) [RFC7011] is used by network devices to export flow information to collectors. Traffic Engineering/Traffic Steering/Traffic load balancing IP prefix is to small. AS number is too coarse. BGP community is fine granularity. No information elements (IEs) are defined in IPFIX for BGP community.

Introduced new IEs bgpCommunity: bgpSourceCommunityList: unsigned32 value containing one BGP community bgpSourceCommunityList: basicList of bgpCommunity Containing zero or more BGP communities corresponding with source IP address of a specific flow bgpDestinationCommunityList: Containing zero or more BGP communities corresponding with destination IP address of a specific flow Both IPv4 and IPv6 traffic are applicable.

Application Scenario Architecture 1 Architecture 2 Exporter Mediator Collector hold the up-to-date BGP routing table look up in the BGP routing table hold the up-to-date BGP routing table look up in the BGP routing table Collect the flow information based on BGP community bgpSourceAsNumber bgpDestinationAsNumber bgpNextHopIPv4Address …existing IEs Correlating BGP community with the flow information by matching the route for the specific flow New IEs for BGP community Architecture 2 Exporter Collector hold the up-to-date BGP routing table look up in the BGP routing table Collect the flow information based on BGP community bgpSourceAsNumber bgpDestinationAsNumber bgpNextHopIPv4Address … New IEs for BGP community

bgpCommunity

bgpSourceCommunityList

bgpDestinationCommunityList

Encoding format example(1/3) Flow information Template Record

Encoding format example(2/3) Data Record bgp Source Community List

Encoding format example(3/3) Data Record bgp DestinationCommunity List bgp Source Community List Information about the second flow bgp DestinationCommunity List

IANA Requirements The Element IDs for the three introduced IEs are solicited to be assigned. Number 458, 459 and 460 are suggested for bgpCommunity, bgpSourceCommunityList and bgpDestinationCommunityList, respectively.

Next steps Work group adoption?

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