H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – IPv4 Routing
H3C S7500E Series Ethernet Switches Chapter 5 BGP Configuration
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z MP_UNREACH_NLRI: Multiprotocol Unreachable NLRI, for withdrawing
unfeasible routes
The above two attributes are both optional non-transitive, so BGP speakers not
supporting multi-protocol ignore the two attributes and do not forward them to peers.
III. Address family
MP-BGP employs address family to differentiate network layer protocols. For address
family values, refer to RFC 1700 (Assigned Numbers). Currently, the system supports
multiple MP-BGP extensions, including IPv6 extension. Different extensions are
configured in respective address family view.
 Note:
z For information about the IPv6 extension application, refer to IPv6 BGP
Configuration in IPv6 Routing.
z This chapter gives no detailed commands related to any specific extension
application in MP-BGP address family view.
5.1.7 Protocols and Standards
z RFC1771: A Border Gateway Protocol 4 (BGP-4)
z RFC2858: Multiprotocol Extensions for BGP-4
z RFC3392: Capabilities Advertisement with BGP-4
z RFC2918: Route Refresh Capability for BGP-4
z RFC2439: BGP Route Flap Damping
z RFC1997: BGP Communities Attribute
z RFC2796: BGP Route Reflection
z RFC3065: Autonomous System Confederations for BGP
5.2 BGP Configuration Task List
Complete the following tasks to configure BGP: