Configuring an Aggregation Mode for IPv6 Flows

Procedure

1. Run system-view

   The system view is displayed.

2. Runipv6 netstream aggregation { as | as-tos | bgp-nexthop-tos | destination-prefix | destination-prefix-tos | index-tos | mpls-label | prefix | prefix-tos | protocol-port | protocol-port-tos | source-prefix | source-prefix-tos | vlan-id }

   The NetStream aggregation view is created.

   

   After collecting statistics about NetStream original flows, the router aggregates original flows into aggregated flows based on specified rules, encapsulates aggregated flows into UDP packets, and sends UDP packets after the aging timer expires. Aggregating original flows minimizes the consumption of network bandwidths, CPU resources, and memory resources. Attributes based on which flows are aggregated vary according to aggregation modes. Table 1 describes the mapping between aggregation modes and flow attributes.

   Table 1 Mapping between aggregation modes and flow attributes

   Aggregation mode	Description
   as	NetStream combines flows with the same source AS number, destination AS number, inbound interface index, and outbound interface index into an aggregated flow and generates one aggregation record.
   as-tos	NetStream combines flows with the same source AS number, destination AS number, inbound interface index, outbound interface index, and Type of Service (ToS) into an aggregated flow and generates one aggregation record.
   bgp-nexthop-tos	NetStream combines flows with the same destination AS number, source AS number, BGP next hop, inbound interface index, and outbound interface index into an aggregated flow and generates one aggregation record.
   destination-prefix	NetStream combines flows with the same destination AS number, destination mask length, destination prefix, and outbound interface index into an aggregated flow and generates one aggregation record.
   destination-prefix-tos	NetStream combines flows with the same destination AS number, destination mask length, destination prefix, ToS, and outbound interface index into an aggregated flow and generates one aggregation record.
   index-tos	NetStream combines flows with the same inbound interface index, outbound interface index, and ToS into an aggregated flow and generates one aggregation record.
   mpls-label	Indicates the MPLS label aggregation, which aggregates flows with the same first layer label, second layer label, third layer label, TopLabelIpAddress, stack bottom symbol of the first layer label, and the EXP value of the first layer label.
   prefix	NetStream combines flows with the same source AS number, destination AS number, source mask length, destination mask length, source prefix, destination prefix, inbound interface index, and outbound interface index into an aggregated flow and generates one aggregation record.
   prefix-tos	NetStream combines flows with the same source AS number, destination AS number, source mask length, destination mask length, source prefix, destination prefix, ToS, inbound interface index, and outbound interface index into an aggregated flow and generates one aggregation record.
   protocol-port	NetStream combines flows with the same protocol number, source port, and destination port into an aggregated flow and generates one aggregation record.
   protocol-port-tos	NetStream combines flows with the same protocol number, source port, destination port, ToS, inbound interface index, and outbound interface index into an aggregated flow and generates one aggregation record.
   source-prefix	NetStream combines flows with the same source AS number, source mask length, source prefix, and inbound interface index into an aggregated flow and generates one aggregation record.
   source-prefix-tos	NetStream combines flows with the same source AS number, source mask length, source prefix, ToS, and inbound interface index into an aggregated flow and generates one aggregation record.
   vlan-id	NetStream combines flows with the same VLAN ID and inbound interface index into an aggregated flow and generates one aggregation record.

3. Run enable

   Statistics collection of flows aggregated in a specified aggregation mode is enabled.

4. (Optional) Run mask { source | destination } minimum mask-length

   The length of the aggregate mask is set. The mask used by the system is the greater one between the mask in the FIB table and the configured mask. If no aggregate mask is set, the system uses the mask in the FIB table for flow aggregation.

   

   The aggregate mask takes effect only on flows aggregated in the following modes: destination-prefix, destination-prefix-tos, prefix, prefix-tos, source-prefix, and source-prefix-tos.

5. Run commit

   The configuration is committed.