Cisco Systems Cisco ONS 15310-MA manual Configures a station ID. The user must configure a, 15-10

Chapter 15 Configuring Resilient Packet Ring on the ML-Series Card

Configuring RPR

	An SPR interface is configured similarly to a EtherChannel (port-channel) interface. Instead of using the
	channel-groupcommand to define the members, you use the spr-intf-idcommand. Like the
	port-channel interface, you configure the virtual SPR interface instead of the physical POS interface. An
	SPR interface is considered a trunk port, and like all trunk ports, subinterfaces must be configured for
	the SPR interface for it to join a bridge group.
	The physical POS interfaces on the ML-Series card are the only members eligible for the SPR interface.
	One POS port is associated with the SONET circuit heading east around the ring from the node, and the
	other POS port is associated with the circuit heading west. When the SPR interface is used and the POS
	ports are associated, RPR encapsulation is used on the SONET payload.
Caution	In configuring an SPR, if one ML-Series card is not configured with an SPR interface, but valid STS
	circuits connect this ML-Series card to the other ML-Series cards in the SPR, no traffic will flow
	between the properly configured ML-Series cards in the SPR, and no alarms will indicate this condition.
	Cisco recommends that you configure all of the ML-Series cards in an SPR before sending traffic.
Caution	Do not use native VLANs for carrying traffic with RPR.
Note	RPR on the ML-Series card is only supported with the default LEX encapsulation, a special
	CISCO-EOS-LEX encapsulation for use with Cisco ONS Ethernet line cards.
	RPR needs to be provisioned on each ML-Series card that is in the RPR. To provision RPR, perform the
	following procedure, beginning in global configuration mode:
	Command	Purpose
Step 1
	Router(config)# bridge irb	Enables the Cisco IOS software to both route and bridge
		a given protocol on separate interfaces within a single
		ML-Series card.
Step 2
	Router(config)# interface spr 1	Creates the SPR interface on the ML-Series card or
		enters the SPR interface configuration mode. The only
		valid SPR number is 1.
Step 3
	Router(config-if)# spr station-id	Configures a station ID. The user must configure a
	station-ID-number	different number for each SPR interface that attaches to
		the RPR. Valid station ID numbers range from 1 to 254.
Step 4
	Router(config-if)# spr wrap	(Optional) Sets the RPR ring wrap mode to either wrap
	{ immediate delayed }	traffic the instant it detects a SONET path alarm or to
		wrap traffic after the delay, which gives the SONET
		protection time to register the defect and declare the link
		down. Use immediate if RPR is running over
		unprotected SONET circuits. Use delayed for
		bidirectional line switched rings (BLSR), path
		protection, multiplex section-shared protection ring
		(MS-SPRing), or SNCP protected circuits.
		The default setting is immediate.

		Cisco ONS 15310-CL, ONS 15310-MA, and ONS 15310-MA SDH Ethernet Card Software Feature and Configuration Guide, R9.1 and R9.2
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