Cisco 15327 - Manual (Page 259)

17-7
Ethernet Card Software Feature and Configuration Guide, R7.2
Chapter 17 Configuring Cisco Proprietary Resilient Packet Ring
Cisco Proprietary RPR QoS
The ML-Series card still has an architectural maximum limit of 255 VLANs/bridge-groups per
ML-Series card. But because the ML-Series card only needs to maintain the MAC address of directly
connected devices, a greater total number of connected devices are allowed on a Cisco proprietary RPR
network.
Cisco Proprietary RPR QoS
The ML-Series card’s Cisco proprietary RPR relies on the QoS features of the ML-Series card for
efficient bandwidth utilization with service level agreement (SLA) support. ML-Series card QoS
mechanisms apply to all SONET/SDH traffic on the ML-Series card, whether passed-through, bridged,
or stripped. For detailed Cisco proprietary RPR QoS information, see the QoS on Cisco proprietary RPR
section of
Chapter 14, “Configuring Quality of Service.”
CTM and Cisco Proprietary RPR
The Cisco Transport Manager (CTM) is an element management system (EMS) designed to integrate
into an overall network management system (NMS) and interface with other higher level management
tools. CTM supports Cisco proprietary RPR provisioning on ML-Series cards. For more information,
refer to the Cisco Transport Manager User Guide at:
http://www.cisco.com/en/US/products/sw/opticsw/ps2204/products_user_guide_list.html
Configuring Cisco Proprietary RPR
You need to use both Cisco Transport Controller (CTC) and Cisco IOS to configure Cisco proprietary
RPR for the ML-Series card. CTC is the graphical user interface (GUI) that serves as the enhanced craft
tool for specific ONS node operations, including the provisioning of the point-to-point SONET/SDH
circuits required for Cisco proprietary RPR. Cisco IOS is used to configure Cisco proprietary RPR on
the ML-Series card and its interfaces.
Successfully creating a Cisco proprietary RPR requires several consecutive procedures:
1. Connecting the ML-Series Cards with Point-to-Point STS/STM Circuits, page 17-8 (CTC or TL1)
2. Configuring CTC Circuits for Cisco Proprietary RPR, page 17-8 (CTC or TL1)
3. Configuring Cisco Proprietary RPR Characteristics and the SPR Interface on the ML-Series Card,
page 17-12
(Cisco IOS)
4. Assigning the ML-Series Card POS Ports to the SPR Interface, page 17-14 (Cisco IOS)
5. Creating the Bridge Group and Assigning the Ethernet and SPR Interfaces, page 17-15 (Cisco IOS)
6. Verifying Ethernet Connectivity Between Cisco Proprietary RPR Ethernet Access Ports, page 17-18
(Cisco IOS)
7. CRC threshold configuration and detection, page 17-18 .
Caution With Cisco proprietary RPR, a shutdown of the SPR interface puts ML1000-2 cards in passthrough
mode. This allows the card to participate in redundant interconnect (RI). ML1000-2 cards are the only
ML-Series cards eligible for RI. Other ML-Series cards fail to enter passthrough mode, when the SPR
interface is shutdown.