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Configuring the PoS Module
MPLSCP is not explicitly configured on a PoS port. Rather, MPLSCP is automatically
enabled on a PoS port when the port is configured for IPCP, and MPLS is enabled on
the VLAN that the PoS port is a member of. When MPLSCP is enabled on a PoS port,
the port will transport IP and MPLS labeled packets, and the port must be a member of
one and only one VLAN. Furthermore, no other ports may be members of this VLAN,
and IP routing is the only protocol supported on the VLAN. The one exception to this
rule occurs when APS is enabled. A single VLAN may contain two IPCP-enabled ports
if they are members of the same APS group.
Extreme Discovery Protocol Control Protocol. EDPCP supports the exchange of
EDP control packets across PoS links. EDP is used to gather information about
neighboring Extreme switches, and to exchange topology information. EDPCP uses PPP
protocol ID 0x820D; EDP packets use PPP protocol ID 0x020D. These PPP protocol IDs
were assigned by the Internet Assigned Numbers Authority (IANA). When the PPP
peer is from a vendor other than Extreme, EDPCP is disabled on the link.
Commands for Configuring and Monitoring PPP Functions
Table 3-5 describes the ExtremeWare commands you use to configure and monitor PPP
functions. Each command is described in detail in the sections that follow.
Table 3-5: PPP Commands
Command
config ppp [bcp [on | off] |
ipcp [on {peer-ipaddress <ipaddress>} | off]]
ports <portlist>
config ppp authentication [off | chap | pap |
chap-pap] ports <portlist>
config ppp delayed-down-time <seconds>
ports <portlist>
config ppp echo [<seconds>
<consecutive_misses> | off] ports <portlist>
config ppp pos checksum [32 | 16]
ports <portlist>
config ppp pos scrambling [on | off]
ports <portlist>
config ppp quality [off |
<required_percent> {<seconds>}]
ports <portlist>
3-26
Description
Configures the Network Control Protocol that will
run on the specified PPP ports.
Configures authentication on the specified PPP
ports.
Configures the delayed-down-time interval used
by PPP for the specified ports.
Configures the link maintenance protocol on the
specified ports.
Configures the size of the HDLC Frame Check
Sequence (FCS) to be used on the specified
SONET ports.
Specifies whether the payload data should be
scrambled on the specified SONET ports.
Configures the Link Quality Monitoring (LQM)
protocol on the specified ports.
Packet Over SONET Module Installation and User Guide
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