Cisco 10000-2P2-2DC Software Guide - Page 414
Configuring OAM Cell Emulation for ATM AAL5 SDU Support over MPLS on PVCs, oam-pvc manage
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Configuration Tasks for L2VPN Chapter 20 Configuring L2 Virtual Private Networks The OAM cells include the following: • Alarm indication signal (AIS) • Remote defect indication (RDI) These cells identify and report defects along a VC. When a physical link or interface failure occurs, intermediate nodes insert OAM AIS cells into all the downstream devices affected by the failure. When a router receives an AIS cell, it marks the ATM VC down and sends an RDI cell to let the remote end know about the failure. Note For AAL5 SDU support over MPLS, you can configure the oam-pvc manage command only after you issue the oam-ac emulation-enable command. You can configure OAM cell emulation for ATM AAL5 SDU support over MPLS in the following ways: • Configuring OAM Cell Emulation for ATM AAL5 SDU Support over MPLS on PVCs, page 20-16 • Configuring OAM Cell Emulation for ATM AAL5 SDU Support over MPLS in VC Class Configuration Mode, page 20-18 Configuring OAM Cell Emulation for ATM AAL5 SDU Support over MPLS on PVCs To configure OAM cell emulation for ATM AAL5 SDU support over MPLS on a PVC, enter the following commands beginning in global configuration mode: Step 1 Command Router(config)# interface type slot/port Step 2 Router(config-if)# pvc [name] vpi/vci l2transport Step 3 Router(config-if-atm-l2trans-pvc)# encapsulation aal5 Step 4 Step 5 Router(config-if-atm-l2trans-pvc)# xconnect peer-router-id vcid encapsulation mpls Router(config-if-atm-l2trans-pvc)# oam-ac emulation-enable [ais-rate] Step 6 Router(config-if-atm-l2trans-pvc)# oam-pvc manage [frequency] Purpose Specifies the interface by type, slot, and port number, and enters interface configuration mode. Creates or assigns a name to an ATM PVC. The l2transport keyword indicates that the PVC is a switched PVC instead of a terminated PVC. Enters L2 Transport VC configuration mode. Specifies ATM AAL5 encapsulation for the PVC. Make sure you specify the same encapsulation type on the PE and CE routers. Binds the attachment circuit to a pseudowire VC. Enables OAM cell emulation for AAL5 over MPLS. The ais-rate variable lets you specify the rate at which AIS cells are sent. The range is 0 to 60 seconds. The default is 1 second, which means that one AIS cell is sent every second. Enables the PVC to generate end-to-end OAM loopback cells that verify connectivity on the virtual circuit. The optional frequency variable is the interval between transmission of loopback cells and ranges from 0 to 600 seconds. The default value is 10 seconds. 20-16 Cisco 10000 Series Router Software Configuration Guide OL-2226-23
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