1. 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

2. 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.

3. 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.

4. 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

5. bgpCommunity

6. bgpSourceCommunityList

7. bgpDestinationCommunityList

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

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

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

11. 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.

12. Next steps
Work group adoption?

13. Thanks