Deleting Communities From A Route - HP 7102dl - ProCurve Secure Router Configuration Manual

Procurve secure router 7000dl series - advanced management and configuration guide
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As always, you can use prefix lists to group routes according to their destina-
tion address. For example, you can divide the Internet into several sections
and group routes to each section together in a set. You can then configure
different attributes for sets of routes that arrive on different interfaces.
You can also match traffic according to its community. As mentioned earlier,
the communities to which a route belongs only affect the route when admin-
istrators configure policies that apply to those communities. The match
command and community list define the community or communities to which
a policy applies. The set commands (described below) actually define the
policy.
Setting Attributes for Selected Routes. Use the set commands to add
attributes to the set of routes that you have selected with the match com-
mands. Among other functions, these attributes affect which route BGP
selects as best. The attributes that you can apply to a route include:
local preference
community
To set a local preference for selected routes, enter this command from the
route map configuration mode context:
Syntax: set local-preference <value>
Enter a value between 0 and 4294967295.
You can only set a local preference for inbound routes. You cannot set the
local preference for routes outbound to an external neighbor.
To place the route in a community defined in the local network, enter this
command:
Syntax: set community [add | internet | local-as | no-advertise | no-export | none |
<1-4294967295> | <aa:nn>]
You may need to clear communities to which the remote neighbor has assigned
the route. See "Deleting Communities from a Route" on page 15-105.

Deleting Communities from a Route

BGP communities are not completely standardized. External neighbors may
place routes in a community for which your network does not define a policy
or for which it defines a substantially different policy. Or, you may not want
to apply the policies that the external neighbor is requesting with the commu-
nity attribute.
IP Routing—Configuring RIP, OSPF, BGP, and PBR
Configuring BGP
15-105

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