Zte ZXR10 8900E series, Product Description

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ZXR10 8900E series Core Switch Product Description
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3.2.1.4 BGP
BGP, an external gateway protocol, switches no-loop route information between
autonomous systems. The information has many attributes to create autonomous system
topology, carry out route policy based on autonomous system. The path reachable
information with autonomous system sequence attribute can clear route loop.
Autonomous system is the collection of routers and terminals which locate in one
management control domain, are treated as single entity, and control route table
extension through BGP classless inter-domain routing. BGP-4 also introduces the
mechanism to support route aggregation, including AS path aggregation. BGP is
designed to use autonomous system to provide one structural view of Internet. The
Internet is divided into several autonomous systems to create one large network which
composed of small, easily manageable networks. These small networks adopt their own
rules and management policies.
ZXR10 8900E BGP has the following functions:

Suitable for enormous networks, e.g., backbone network.

Support EBGP and IBGP.

Support EBGP multi-hop technology.
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Support group attributes and route reflector.
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Support AS ally and route turbulence suppression.
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Support MP-BGP;
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Support MD5 authentication and route filtering;

Support route reallocation.
3.2.1.5 Policy routing
Traditional routing policy performs route forwarding according to the route table
generated by routing protocol or static route. However, in some applications, the users
have some special requirements for routing. Traditional routing policy can only perform
forwarding by destination address. This indiscriminating forwarding mechanism cannot
meet the requirements of increasingly complicated network services.
Compared with traditional routing, policy routing provides more flexible message
forwarding and route control capability. The network management users can not only
perform route forwarding by destination address but also can select other forwarding
paths according to protocol type, message size, application, IP source address and other
conditions. Policy-based routing is more beneficial for network traffic distribution and QoS
improvement. Policy routing means to match certain feature values in IP data packet
according to the policy set by the network management user. Those that match the