Operation Manual – IPv6 RoutingH3C S3610&S5510 Series Ethernet Switches Chapter 5 IPv6 BGP Configuration5-135.5.2 Configuring IPv6 BGP Preference and Default LOCAL_PREF andNEXT_HOP AttributesFollow these steps to perform this configuration:To do... Use the command... RemarksEnter system view system-view —Enter BGP view bgp as-number RequiredEnter IPv6 address familyview ipv6-family —Configure preferencevalues for IPv6 BGPexternal, internal, localroutespreference{ external-preferenceinternal-preferencelocal-preference |route-policyroute-policy-name }OptionalThe default preferencevalues of external, internaland local routes are 255,255, 130 respectivelyConfigure the defaultvalue for local preferencedefault local-preferencevalueOptionalThe value defaults to 100Advertise routes to apeer/peer group with thelocal router as the nexthoppeer { ipv6-group-name |ipv6-address }next-hop-localRequiredBy default, the feature isavailable for routesadvertised to the EBGPpeer/peer group, but notavailable to the IBGPpeer/peer groupNote:z To make sure an IBGP peer can find the correct next hop, you can configure routesadvertised to the peer to use the local router as the next hop. If BGP load balancingis configured, the local router specifies itself as the next hop of outbound routes to apeer/peer group regardless of whether the peer next-hop-local command isconfigured.z In a “third party next hop" network, that is, the two EBGP peers reside in a commonbroadcast subnet, the router does not specify itself as the next hop for routes to theEBGP peer by default, unless the peer next-hop-local command is configured.
