Table Of Contents
Configuring the Cisco uBR10-SRP-OC12SML DPT WAN Card
Spatial Reuse Protocol Overview
Overview of the Intelligent Protection Switch Feature
Related Features and Technologies
Supported Standards, MIBs, and RFCs
Performing a Basic Configuration
Forcing a Ring Wrap to Create a Break in the DPT Ring
Removing a Node from a DPT Ring
Monitoring and Maintaining the DPT WAN Card
Displaying Version Information
Displaying a Summary of All Interfaces
Verifying the DPT WAN Card Configuration and Status
Displaying Hardware Information
Displaying the DPT Ring Topology
Displaying Intelligent Protection Switch Status
Configuring the Cisco uBR10-SRP-OC12SML DPT WAN Card
UBR10-SRP-OC12SML, UBR10-SRP-OC12SML=
OL-2054-01 Rev. B0
January 14, 2002`Feature History
Release 12.2(4)BC1
This Cisco uBR10-SRP-OC12SML DPT WAN Card was supported on the Cisco uBR10012 universal broadband router.
This document describes the Cisco uBR10-SRP-OC12SML DPT WAN Card used in the Cisco uBR10012 chassis. This document provides the following information:
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Supported Standards, MIBs, and RFCs
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Caution
Feature Overview
The Cisco uBR10012 Spatial Reuse Protocol (SRP) OC12 single-mode fiber, long reach (SML) dynamic packet transport (DPT) adapter card provides shared IP connectivity over SONET capability for the Cisco uBR10012 series router platform.
The Cisco uBR10-SRP-OC12SML DPT WAN card is a double-width card that requires two network uplink card slots in the Cisco uBR10012 chassis. If you are installing two adapter cards, they should be installed in slots 2/0 and 4/0 in the chassis. If you are installing only one adapter card, it can be installed in either slot 2/0, 3/0, or 4/0 in the chassis.
This section contains the following information:
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Spatial Reuse Protocol Overview
Spatial Reuse Protocol (SRP) is a media-independent MAC layer protocol that operates over two counter-rotating fiber-optic rings. The dual rings provide survivability of data in case of a failed node or a break in connecting cables by rerouting the data path over the alternate ring.
The SRP dual-ring topology offers a number of advantages over other technologies, including minimal protocol overhead, statistical multiplexing, and support for priority traffic at the MAC layer. An SRP ring does not require a software-based station management transfer (SMT) protocol or the ring master negotiation that is used in other ring-based protocols.
SRP provides a more efficient use of bandwidth by having packets traverse only the part of the ring necessary to get to the destination node. Once the packet has reached the destination node, it is removed from the ring, allowing other parts of the ring to reuse the bandwidth. Because each ring node can source packets onto the ring concurrently, this maximizes ring bandwidth.
Data packets travel on one ring, while associated control packets travel in the opposite direction on the alternate ring, ensuring that the data takes the shortest path to its destination. (See Figure 1.)
Figure 1 DPT Ring
Each node on a DPT ring represents a Cisco uBR10012 router or another Cisco router using a similar OC12 DPT WAN card (such as a Cisco 12000 series Gigabit Switch Router (GSR), Cisco 7500 series router, or a Cisco uBR7246 VXR universal broadband router. A DPT ring can contain up to 32 nodes at one time, with each node holding a map of the ring topology that it continually updates to ensure that data takes the shortest path to its destination. The frequency of the updating can be manually configured.
The DPT interface uses the SONET ring architecture, which provides redundancy and protection from a failed node or fiber cut through the use of the Intelligent Protection Switch (IPS). When the DPT ring topology changes because of a node failure, as shown in Figure 2, the system software automatically puts the node into pass-through mode, where data continues to pass through the node, but the node is no longer seen on the ring topology map.
Figure 2 DPT Ring with a Node in Pass-Through Mode
In the event of a fiber cut, ring wraps are created to redirect data traffic over the alternate ring. In both pass-through mode and wrap mode, data packets not destined for the affected node still reach their destination. See Figure 3.
Figure 3 DPT Ring in Wrap Mode
Creating a DPT Ring
A DPT ring may contain as many as 32 nodes, or as few as 2 nodes. This section illustrates the layout and configuration of a simple three-node DPT ring.
Before the DPT ring can be created, each node (Cisco uBR10012 router or other Cisco router with a DPT port adapter) must have a DPT WAN card installed and configured. After the individual nodes are configured, the inner and outer rings of the DPT ring must be connected as shown in Figure 4.
Figure 4 Three-Node DPT Ring
To achieve this configuration, you must connect the DPT WAN cards as shown in Figure 5, being careful to observe the receive (RX) and transmit (TX) cable relationship.
Figure 5 Internodal Connections of a Three-Node DPT Ring
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Table 1 lists the internodal cable connections for a three-node DPT ring.
Understanding DPT Topology
Every node on a DPT ring maintains a topology map of the ring so that it knows where to route traffic. It updates the topology map by periodically sending out a query, called a topology discovery packet, out onto the ring. Each node on the ring adds its own MAC address to the packet and resends the packet.
When the discovery packet returns to the originating node, the node uses the contents of the packet to update its node topology map. This ensures that each node has a real-time view of the DPT ring's topology and can respond quickly to any breaks in the ring.
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Overview of the Intelligent Protection Switch Feature
The Intelligent Protection Switch (IPS) feature ensures that ring traffic flow continues uninterrupted even if device or ring failures occur. IPS protects the DPT ring by initiating ring wraps that route traffic in the opposite direction over the alternate ring.
The system software creates ring wraps by issuing an IPS request when failures are detected. Five different IPS requests are recognized. These five types of IPS requests are hierarchical, with higher-priority requests taking precedence over lower-priority requests.
Table 2 lists the types of IPS requests in order of priority.
Table 2 IPS Request Hierarchy
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Forced switch
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Signal degrade
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Manual switch
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Wait to restore
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For example, if a signal failure was detected at the same time that an operator entered a manual switch request, the system would create the ring wrap at the point of signal failure, and the manual switch would be ignored.
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Benefits
The Cisco uBR10-SRP-OC12SML DPT WAN card provides the following benefits:
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Restrictions
The Cisco uBR10-SRP-OC12SML DPT WAN card has the following restrictions.
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If you are installing two DPT WAN cards, they must be installed in slots 2/0 and 4/0 in the chassis. If you are installing only one DPT WAN card, it can be installed in either slot 2/0, 3/0, or 4/0 in the chassis.
Related Features and Technologies
Dynamic Packet Transport—DPT is a packet ring technology designed to deliver scalable Internet service, reliable IP-aware optical transport, and simplified network operations. DPT-based solutions allow you to scale and distribute your Internet and IP services across a reliable optical packet ring infrastructure.
DPT is based on the Spatial Reuse Protocol (SRP), which is a Cisco-developed MAC-layer protocol. See the Dynamic Packet Transport (DPT) Feature Guide for more information.
Related Documents
The following documents describe the hardware components, installation, and cabling of the DPT WAN card and Cisco uBR10012 router:
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The following documents describe the software configuration tasks and commands used to configure the DPT WAN card and Cisco uBR10012 router:
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These documents are available on Cisco.com and the Customer Documentation CD-ROM.
Supported Platforms
This Cisco uBR10-SRP-OC12SML DPT WAN card is supported only on the Cisco uBR10012 universal broadband router.
Determining Platform Support Through Feature Navigator
Cisco IOS software is packaged in feature sets that support specific platforms. To get updated information regarding platform support for this feature, access Feature Navigator. Feature Navigator dynamically updates the list of supported platforms as new platform support is added for the feature.
Feature Navigator is a web-based tool that enables you to quickly determine which Cisco IOS software images support a specific set of features and which features are supported in a specific Cisco IOS image.
Feature Navigator is updated regularly when major Cisco IOS software releases and technology releases occur. For the most current information, go to the Feature Navigator home page at the following URL:
Supported Standards, MIBs, and RFCs
Standards
No new or modified standards are supported by this feature.
MIBs
No new or modified MIBs are supported by this feature.
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To obtain lists of supported MIBs by platform and Cisco IOS release, and to download MIB modules, go to the Cisco MIB website on Cisco.com at the following URL:
http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml
RFCs
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Prerequisites
The Cisco uBR10-SRP-OC12SML DPT WAN card requires the following:
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Configuration Tasks
See the following sections for configuration tasks for the Cisco uBR10-SRP-OC12SML DPT WAN card.
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Enabling the Interface
Before using an interface, use the no shutdown command to enable the interface. Use the following procedure to enable an interface.
For complete descriptions of software configuration commands, refer to the publications listed in the "Related Documents" section.
Shutting Down the Interface
Before removing an interface, use the shutdown command to shut down (disable) the interface to prevent anomalies when you reinstall the new or reconfigured interface. When you shut down an interface, it is designated administratively down in the show command displays.
Use the following procedure to shut down an interface.
For complete descriptions of software configuration commands, refer to the publications listed in the "Related Documents" section.
Performing a Basic Configuration
This section describes guidelines for performing a basic configuration of the DPT WAN card, which includes enabling the DPT WAN card, configuring the IP address, and specifying IP routing. You might also need to enter other configuration subcommands, depending on the requirements for your system configuration and the protocols you plan to route on the interface.
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Use the following procedure to initially configure the DPT WAN card.
After you have completed your configuration, you can check it using show commands. For an explanation of the relevant show commands, see the "Monitoring and Maintaining the DPT WAN Card" section.
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Adding a Node to a DPT Ring
This section describes how to install and configure a Cisco uBR10012 router with a DPT WAN card as a node in the DPT ring. Before proceeding, verify that you have successfully installed and configured a DPT WAN card in the Cisco uBR10012 router, as described in the "Performing a Basic Configuration" section.
To add a node to a DPT ring, you must perform the following procedures in the order given:
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The following sections describe the commands needed for each procedure. For the purposes of this section, the new node (the Cisco uBR10012 router with the DPT WAN card) is being inserted between Node A and Node D, as shown in Figure 6:
Figure 6 DPT Ring Topology with Four Nodes
Forcing a Ring Wrap to Create a Break in the DPT Ring
To add a node to a DPT ring, you must first reroute the traffic flow around the break where the new node is to be inserted. This is done by using the srp ips forced-switch command to force a ring wrap at that point. Use the following procedure on Node A to force a ring-wrap between Node A and Node D, as given in Figure 6.
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After completing this procedure, the DPT ring topology changes, as shown in Figure 7:
Figure 7 DPT Ring with Ring Wraps Created by a Forced Switch
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Inserting the New Node
After forcing a ring wrap in the DPT ring to create a break for the new node, you must then insert the new node (the Cisco uBR10012 router with the DPT WAN card) into the DPT ring, as shown in Figure 8.
Figure 8 DPT Ring Topology with an Added Node
Use the following procedure to insert the new node (Node E, the Cisco uBR10012 router with the DPT WAN card) into the DPT ring.
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Enabling the New Node
After inserting and cabling the new node into the DPT ring, enable the DPT WAN card on the new node (node E), using the following procedure.
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Removing the Ring Wrap
The final step in inserting a new node is to remove the ring wrap on node A. Use the following procedure on node A to remove the ring wrap and to start passing traffic through the new node (node E, the Cisco uBR10012 router).
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Removing a Node from a DPT Ring
Use the following procedure to remove an existing node from a DPT ring. This procedure assumes you are removing node D from the DPT ring shown in Figure 9.
Figure 9 DPT Ring Topology with Four Nodes
Step 1
NodeA-Router# config tNodeA-Router(config) int s2/0/0NodeA-Router(config-if)# srp ips request forced-switch aNodeA-Router(config-if)# exitNodeA-Router(config)# exitNodeA-Router#If node C is a Cisco uBR10012 router with a DPT WAN card in slot 4/0, you would issue the following commands:
NodeC-Router# config tNodeC-Router(config) int s4/0/0NodeC-Router(config-if)# srp ips request forced-switch bNodeC-Router(config-if)# exitNodeC-Router(config)# exitNodeC-Router#Step 2
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Monitoring and Maintaining the DPT WAN Card
The following sections describe the different show commands that provide information about the status and operation of the Cisco uBR10-SRP-OC12SML DPT WAN card.
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Displaying Version Information
To display the version of Cisco IOS software being run, as well as a list of interfaces that are installed and recognized, use the show version command:
Router# show versionCisco Internetwork Operating System SoftwareIOS (tm) 10000 Software (UBR10K-P6-M), RELEASE Version 12.2(4)BC1Copyright (c) 1986-2001 by cisco Systems, Inc.Compiled Fri 09-Nov-01 16:45 by abcdImage text-base: 0x60008960, data-base: 0x61390000ROM: System Bootstrap, Version 12.0(9r)SL2, RELEASE SOFTWARE (fc1)BOOTFLASH: 10000 Software (C10K-EBOOT-M), Version 12.0(11)SL, RELEASE SOFTWARE (fc1)SRP-10K uptime is 4 days, 18 hours, 57 minutesSystem returned to ROM by reload at 03:30:56 UTC Thu Sep 14 2000System image file is "disk0:ubr10k-p6-mz"cisco uBR10000 (PRE-RP) processor with 393215K/131072K bytes of memory.Processor board ID TBA05301491R7000 CPU at 262Mhz, Implementation 39, Rev 2.1, 256KB L2, 2048KB L3 CacheBackplane version 1.1, 8 slotLast reset from power-onToaster processor tmc0 is running.Toaster processor tmc1 is running.2 TCCplus card(s)1 Ethernet/IEEE 802.3 interface(s)1 FastEthernet/IEEE 802.3 interface(s)1 Gigabit Ethernet/IEEE 802.3 interface(s)1 SRP network interface(s)2 Cable Modem network interface(s)509K bytes of non-volatile configuration memory.125440K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes).32768K bytes of Flash internal SIMM (Sector size 256KB).Configuration register is 0x0Router#Displaying a Summary of All Interfaces
To display a summary of all interfaces, including the DPT WAN card, use the show ip interface brief command in privileged EXEC mode:
Router# show ip interface briefInterface IP-Address OK? Method Status ProtocolEthernet0/0/0 127.0.0.254 YES unset up upFastEthernet0/0/0 1.8.22.13 YES NVRAM up upSRP2/0/0 200.1.1.10 YES NVRAM up upSRP4/0/0 202.1.1.10 YES NVRAM up upCable5/0/0 130.1.1.1 YES NVRAM up upCable5/0/1 unassigned YES NVRAM up upLoopback0 203.1.1.10 YES NVRAM up upRouter#Verifying the DPT WAN Card Configuration and Status
To verify the DPT WAN card's configuration, including whether an interface is up or shut down, use the show interfaces command. The following example shows a typical display for a DPT WAN card that is up and online:
Router# show interfaces srp 2/0/0SRP2/0/0 is up, line protocol is upHardware is SRP, address is 0000.1010.1010 (bia 0005.00e1.44cc)Internet address is 192.168.100.10/24MTU 4470 bytes, BW 622000 Kbit, DLY 100 usec,reliability 255/255, txload 1/255, rxload 1/255Encapsulation SRP, Side A loopback not set Side B loopback not set5 nodes on the ring MAC passthrough not setSide A: not wrapped IPS local: IDLE IPS remote: IDLESide B: not wrapped IPS local: IDLE IPS remote: IDLELast input 00:00:00, output 00:00:02, output hang neverLast clearing of "show interface" counters neverQueueing strategy: fifoOutput queue 0/40, 0 drops; input queue 0/75, 0 drops30 second input rate 573000 bits/sec, 1122 packets/sec30 second output rate 10000 bits/sec, 1 packets/sec4514360 packets input, 287581030 bytes, 0 no bufferReceived 0 broadcasts, 0 runts, 0 giants, 0 throttles0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort88337 packets output, 9918292 bytes, 0 underruns0 output errors, 0 collisions, 2 interface resets0 output buffer failures, 0 output buffers swapped outSide A received errors:0 input errors, 0 CRC, 0 ignored,0 framer runts, 0 framer giants, 0 framer aborts,0 mac runts, 0 mac giants, 0 mac abortsSide B received errors:0 input errors, 0 CRC, 0 ignored,0 framer runts, 0 framer giants, 0 framer aborts,0 mac runts, 0 mac giants, 0 mac abortsRouter#The following example shows a typical display when the DPT WAN card has been disabled with the shutdown command:
Router# show interfaces srp 2/0/0SRP2/0/0 is administratively down, line protocol is downHardware is SRP, address is 0000.1010.1010 (bia 0005.00e1.44cc)Internet address is 200.1.1.10/24MTU 4470 bytes, BW 622000 Kbit, DLY 100 usec,reliability 255/255, txload 1/255, rxload 1/255Encapsulation SRP, Side A loopback not set Side B loopback not set4 nodes on the ring MAC passthrough setSide A: not wrapped IPS local: IDLE IPS remote: IDLESide B: not wrapped IPS local: IDLE IPS remote: IDLERouter#Another quick way of displaying a card's status is with the show protocols command:
Router# show protocols srp 2/0/0SRP2/0/0 is up, line protocol is upDisplaying Hardware Information
To display hardware information about the DPT WAN card, use the show diag and the show controllers srp commands. The following is a typical display for the show diag command for a DPT WAN card:
Router# show diag 2/0Slot/Subslot 2/0:2oc12srp-sm-lr card, 1 portCard is full slot sizeCard is analyzedCard detected 1d23h agoCard uptime 1 days, 23 hours, 25 minutes, 30 secondsCard idle time N/AVoltage status: 5V Nominal 3.3V Nominal 2.5V NominalEEPROM contents, slot 2/0:Hardware Revision : 3.0Top Assy. Part Number : 800-19092-01Board Revision : 17Product Number : UBR10-SRP-OC12SMLCLEI Code : IPI8KP0CAADeviation Number : 0-0Fab Version : 03PCB Serial Number : CAB0544L6EARMA Test History : 00RMA Number : 0-0-0-0RMA History : 00LCMON version, slot 2/0IOS (tm) 7200 Software (UBR10KCLC-LC-M), RELEASE Version 12.2(4)BC1Compiled Wed 10-Oct-01 12:18 by skawReset due to: reloadOperational Image version, slot 2/0IOS (tm) 7200 Software (UBR10KCLC-LC-M), Experimental Version 12.2(20011114:234401) [skaw-fantail 101]Compiled Wed 14-Nov-01 16:08 by skawRouter#The following is an excerpt of a typical display for the show controllers srp details command for a DPT WAN card:
Router# show controllers srp detailsInterface Ethernet0/0/0Hardware is AMD LagunaADDR: 61BD31E0, FASTSEND: 600960C8, MCI_INDEX: 0DIST ROUTE ENABLED: 0Route Cache Flag: 11CSR0=0x72, CSR3=0x1044, CSR4=0x493D, CRDA=0x8A76ED0, CXDA=0x8A779B0LADRF=0x0000 0x0000 0x0000 0x0000CSR80=0x9E00CSR15=0x0HW filtering information:Promiscuous Mode Disabled, PHY Addr Enabled, Broadcast Addr EnabledPHY Addr=0200.0000.00A0, Multicast Filter=0x0000 0x0000 0x0000 0x0000CSR5=0x1, CSR7=0x820, CSR100=0xF000, CSR125=0x603CBCR2=0x0, BCR9=0x0, BCR18=0x10E0BCR25=0x0, BCR26=0x0, BCR27=0x10, BCR32=0x400,amdfe_ds=0x70348648, registers=0x48100000, ib=0x8A7EAC0rx ring entries=128, tx ring entries=128rxring=0x8A7EB20, rxr shadow=0x6391C23C, rx_head=1, rx_tail=0txring=0x8A7F360, txr shadow=0x70348778, tx_head=44, tx_tail=44, tx_count=0Software MAC address filter(hash:length/addr/mask/hits):spurious_idon=0, filtered_pak=0, throttled=0, enabled=0, disabled=0rx_framing_err=0, rx_overflow_err=0, rx_buffer_err=0, rx_bpe_err=0rx_soft_overflow_err=0, rx_no_enp=0, rx_discard=0, rx_miss_count=0Interface SRP2/0/0(idb 0x717D8674)Hardware is SRPip_routecache=0x11(dfs=0/mdfs=0), max_mtu=4572cr10k_oc12srp_ds=0x717DC0F4resets=0, reset_init=1, reset_restart=3Interface SRP4/0Hardware is SRPidb=0x60A81C30, ds = 0x60A86104Interrupt stat:Receive : error_intr = 0 , pkt_intr = 126519547 , rx_intr =126142294mac_spurious_intr = 0 , tx_error_intr = 0Side A :FRAMER : framer_intr = 28MAC : ctrl_intr = 101223 , error_intr = 581TX : IPS = 10277011 , High = 0 , Low = 18Side B :FRAMER : framer_intr = 15MAC : ctrl_intr = 101239 , error_intr = 4TX : IPS = 59535703 , High = 0 , Low = 2...Displaying the DPT Ring Topology
To display the topology of the DPT ring, use the show srp topology command. The following is a typical display for a Cisco uBR10012 router with two DPT WAN cards installed in slots 2/0 and 4/0. The key components of the display are the list of nodes in the DPT ring, the frequency of the topology discovery packets, the time that a topology discovery packet was last received, and the time that the topology of the DPT ring actually changed.
Router# show srp topologyTopology Map for Interface SRP2/0/0Topology pkt. sent every 5 sec. (next pkt. after 3 sec.)Last received topology pkt. 00:00:55Last topology change was 00:13:00 ago.Nodes on the ring: 5Hops (outer ring) MAC IP Address Wrapped Name0 aaaa.bbbb.0010 200.1.1.10 No UBR10K1 2555.5555.5555 200.1.1.5 No 75052 aaaa.bbbb.1111 200.1.1.1 No 72463 aaaa.bbbb.7777 200.1.1.7 No ubr7246VXM4 2222.2222.2222 200.1.1.2 No UBR10KTopology Map for Interface SRP4/0/0Topology pkt. sent every 5 sec. (next pkt. after 2 sec.)Last received topology pkt. 00:0:03Last topology change was 00:14:05 ago.Nodes on the ring: 2Hops (outer ring) MAC IP Address Wrapped Name0 0005.00e1.44e4 202.1.1.10 No UBR10K1 aaaa.bbbb.0050 202.1.1.8 No c7206Router#The following shows a DPT ring where ring wrap has occurred, indicating a possible break in the cabling between nodes 2 and 3:
Router# show srp topologyTopology Map for Interface SRP2/0/0Topology pkt. sent every 5 sec. (next pkt. after 3 sec.)Last received topology pkt. 00:00:55Last topology change was 00:13:00 ago.Nodes on the ring: 5Hops (outer ring) MAC IP Address Wrapped Name0 aaaa.bbbb.0010 200.1.1.10 No UBR10K1 2555.5555.5555 200.1.1.5 No 75052 aaaa.bbbb.1111 200.1.1.1 Yes 72463 aaaa.bbbb.7777 200.1.1.7 Yes ubr7246VXM4 2222.2222.2222 200.1.1.2 No UBR10KRouter#The following display shows that the interface has not received a topology discovery packet for 2 days and 18 hours. This was also the time that the last topology change occurred, which indicates that this node might have been isolated from the DPT ring, either due to a break in the fiber optics cabling or by a forced ring wrap.
Router# show srp topologyTopology Map for Interface SRP2/0/0Topology pkt. sent every 30 sec. (next pkt. after 0 sec.)Last received topology pkt. 2d18hLast topology change was 2d18h ago.Nodes on the ring: 6Hops (outer ring) MAC IP Address Wrapped Name0 aaaa.bbbb.0010 200.1.1.10 No SRP-10K1 aaaa.bbbb.1111 200.1.1.1 No 72462 aaaa.bbbb.3333 200.1.1.3 No ubr13 2555.5555.5555 200.1.1.5 No 75054 aaaa.bbbb.0050 200.1.1.8 No c72065 2222.2222.2222 200.1.1.2 No UBR10KRouter#Displaying Packet Information
You can count the number of packets from a specific MAC address with the srp count interface configuration command. You can then display the number of packets received or rejected with the show srp source-counters command. For example:
Router# config tRouter(config)# int srp2/0/0Router(config-if)# srp count aaaa.bbbb.ccccRouter(config-if)# exitRouter(config)# exitRouter#...Router# show srp source-countersSource Address Information for Interface SRP2/0/0aaaa.bbbb.cccc, index 1, pkt. count 1201aaaa.bbbb.cccc, reject, pkt. count 400Displaying Intelligent Protection Switch Status
To display the current IPS status, use the show srp ips command:
Router# show srp ipsIPS Information for Interface SRP2/0/0MAC AddressesSide A (Outer ring RX) neighbor aaaa.bbbb.0010Side B (Inner ring RX) neighbor aaaa.bbbb.0020Node MAC address aaaa.bbbb.3333IPS StateSide A not wrappedSide B not wrappedSide A (Inner ring TX) IPS pkt. sent every 1 sec. (next pkt. after 1 sec.)Side B (Outer ring TX) IPS pkt. sent every 1 sec. (next pkt. after 1 sec.)inter card bus enabledIPS WTR period is 60 sec. (timer is inactive)Node IPS State: idleIPS Self Detected Requests IPS Remote RequestsSide A IDLE Side A IDLESide B IDLE Side B IDLEIPS messages receivedSide A (Outer ring RX) {aaaa.bbbb.0010,IDLE,SHORT}, TTL 128Side B (Inner ring RX) {aaaa.bbbb.0010,IDLE,SHORT}, TTL 128IPS messages transmittedSide A (Outer ring RX) {aaaa.bbbb.3333,IDLE,SHORT}, TTL 255Side B (Inner ring RX) {aaaa.bbbb.3333,IDLE,SHORT}, TTL 255Router#The following shows a DPT WAN card with a wrapped interface:
Router# show srp ipsIPS Information for Interface SRP2/0/0MAC AddressesSide A (Outer ring RX) neighbor aaaa.bbbb.0010Side B (Inner ring RX) neighbor aaaa.bbbb.0010Node MAC address aaaa.bbbb.3333IPS StateSide A wrappedSide B wrappedSide A (Inner ring TX) IPS pkt. sent every 1 sec. (next pkt. after 1 sec.)Side B (Outer ring TX) IPS pkt. sent every 1 sec. (next pkt. after 1 sec.)inter card bus enabledIPS WTR period is 60 sec. (timer is inactive)Node IPS State: wrappedIPS Self Detected Requests IPS Remote RequestsSide A SF Side A IDLESide B SF Side B IDLEIPS messages receivedRouter#Configuration Examples
This section provides typical sample configurations for the Cisco uBR10-SRP-OC12SML DPT WAN card. The following is a portion of the configuration file for the Cisco uBR10012 router with two DPT WAN cards that are configured with an IP address but otherwise left with their default configurations:
interface SRP2/0/0ip address 192.168.10.10 255.255.255.0ip mtu 1500load-interval 30no keepalive!interface SRP4/0/0ip address 192.168.20.10 255.255.255.0ip mtu 1500load-interval 30no keepalive!The following is a portion of the configuration file for a DPT WAN card that has been configured with non-default values for the SRP interface parameters:
interface SRP2/0/0ip address 200.1.1.10 255.255.255.0ip mtu 1500load-interval 30srp count aaaa.bbbb.1111srp flag c2 200 asrp flag c2 200 bsrp topology-timer 30srp ips timer 20 asrp ips timer 20 bsrp deficit-round-robin input high deficit 30000srp tx-traffic-rate 300000srp priority-map receive high 7srp buffer-size receive high 32srp buffer-size receive medium 32cdp enableCommand Reference
This section summarizes the interface configuration commands used to configure and monitor the Cisco uBR10-SRP-OC12SML DPT WAN card. Table 3 lists the parameter, the interface configuration command used to alter it, and the default value of the parameter.
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Glossary
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