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How does V5 realize the route aggregation?

Latest reply: Mar 6, 2016 00:04:03 1360 1 0 0 0
How does V5 realize the route aggregation?
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Created Mar 6, 2016 00:04:03

There are two ways for V5 to realize route aggregation, as follows:
Automatic aggregation function: configure through the “summary automatic” command in BGP/BGP VPN view, by default it is disabled. Automatic aggregation only aggregate the kinds of protocol routes which are imported by the command “import-route” (BGP routes from a neighbor do not become effective), and do not aggregate default routes while suppress the subnet routes imported by the IGP which participate in aggregation automatically to decrease the amount of routes. This method is rigid, and is in accordance with the natural mask for aggregation; sometimes it can’t meet the requirements.
Manual aggregation: Configure by the command “aggregate” in BGP/BGP VPN view, the command carries many parameters, and it not only brings more flexibilities to aggregation, but also neatly integrate into route policies in order to achieve the purpose of precise control, specific methods can refer to MSRrouter BGP route aggregation test experiences summary,and the reference URL is http://tech/article.php/5211
What should pay attention is that it is complicated to use the parameters of aggregate command. Compared with Cisco, there are some differences on the implementation of aggregate. You can learn about it by related documentations.
Especially be careful that if you do not set the mask in manual aggregation, it will be aggregated by nature mask.
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