Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010, Руководство по настройке

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action for the unknown service name tag is drop . If both terminate and drop
are configured for services in the table, all unknown service name tags are
dropped by default.
Features
PPPoE service name tables enable an AC, such as an E Series router, to support
multiple service name tags in addition to the empty service name tag and the
unknown service name tag. You can configure up to 16 PPPoE service name tables
per E Series router to:
■
Define the set of service name tags (empty service name, custom service name,
and unknown service name) that the router advertises in the PADO packets sent
to PPPoE clients.
■
Control whether the router responds to ( terminate ) or denies ( drop ) PADI requests
based on the action associated with the service name tags.
Table Structure
Each entry, or row, in a PPPoE service name table consists of the following
components:
■
Service name tag—Service name tags specify the client services that an AC
supports. You can add three types of service name tags to the PPPoE service
name table: empty service name, custom service name (
serviceName ), and
unknown service name. Every PPPoE service name table includes one empty
service name tag and one unknown service name service tag. An empty service
name tag is a service tag of zero length that is used to represent any service. An
unknown service name service tag is used to represent a service tag that has not
been configured in the service name table. In addition to these two tags, you
can configure up to 16 custom service name tags per table.
■
Action—Each service name tag has an associated action: terminate (the default
action) or drop . For empty service name and unknown service name entries,
you can use the action keyword with the service command to modify the default
action associated with the service. For custom service name ( serviceName ) entries,
using the action keyword with the service command is optional. The default
action for a custom service tag entry is terminate .
For example, Table 19 on page 378 shows a PPPoE service name table containing
five entries: three custom service name tags, two associated with the
terminate
action and one associated with the drop action; an empty service name tag (“ ” )
associated with the drop action; and an unknown service name tag associated with
the drop action.
Table 19: Sample PPPoE Service Name Table
Action Service Name
Terminate “myISPService”
Terminate “myQOSClass1”
378 ■
Overview
JUNOSe 11.1.x Link Layer Configuration Guide