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In the Switch 8800, BGP uses the following policies when it advertises routes: 

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If there are multiple routes available, a BGP speaker only selects the optimum 
one. 

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A BGP speaker only advertises its own route to its peers. 

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A BGP speaker advertises the routes obtained from EBGP to all its BGP peers 
(including EBGP and IBGP peers). 

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A BGP speaker does not advertise the routes obtained from IBGP to its other 
IBGP peers. 

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Once the connection is set up, a BGP speaker will advertise all its BGP routes to 
its peers. 

In the Switch 8800, BGP uses the following policies when it selects routes:

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Discard the routes from an unreachable or unknown next hop.

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Select the routes with the highest local preference. 

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Select the routes that originate at the router itself. 

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Select the routes with the lowest number of AS-paths.

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Select the routes with the lowest origin. 

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Select the routes with the lowest MED value.

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Select the routes learned from EBGP.

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Select the routes advertised by the router with the lowest ID.

A BGP speaker calls other BGP speakers, peers, when they exchange information. 
Multiple related peers compose of a peer group.

In the Switch 8800, a BGP peer must belong to a peer group. If you want to 
configure a BGP peer, you first need to create a peer group and then add a peer 
into that group. 

BGP peer group feature can simplify user configuration and improve route 
advertisement efficiency. When added into a peer group, a peer inherits all the 
configuration of the group. 

If the configuration of a peer group changes, the configuration of its member 
peers also changes. Some attributes can be configured to a particular member 
peer by specifying its IP address. The attributes configured in this way have a 
higher priority than those configured for a peer group. Note that all member peers 
must use the same update policy as its group, but may use a different ingress 
policy.

BGP configuration includes: 

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