Configuring BXM Virtual Circuits

Configuring BXM Connections

BXM Commands

Command Line Interface Examples

Configuring the BPX Switch LAN and IP Relay

BXM SVC Resource Partitioning

Configuring BXM Virtual Circuits

This chapter provides instructions for configuring the the Broadband Switch Module (BXM) card sets. It also describes resource partitioning for the BPX switch, including procedures for UNI port resource partitioning for the BXM. You will also find procedures for NNI or trunk resource partitioning for the BXM and BNI.

The chapter includes:

The BXM supports label switching. Partitions for the BXM can be allocated either between:

PNNI SVCs and PVCs

: or

Label switching virtual circuits (LVCs) and PVCs

For information on Label Switching, refer to the Cisco MPLS Software Configuration Guide.

For details about the BXM card set, see Chapter 5, BXM Card Sets: T3/E3, 155, and 622.

The BXM cards supports dynamic resource partitioning to support the conversion of PVCs to soft permanent virtual circuits (SPVCs).

Configuring BXM Connections

You will typically configure and provision connections by using Cisco WAN Manager. However,you can also add the connections by using the BPX switch command line interface (CLI). This may be appropriate during initial local node setup and when a Cisco WAN Manager workstation is not available. Afterwards, it is faster and easier to use the graphical interface.

Two connection addressing modes are supported:

You may enter a unique VPI/VCI address in which case the BPX switch functions as a virtual circuit switch.
You may enter only a VPI address in which case all circuits are switched to the same destination port and the BPX switch functions as a virtual path switch in this case.

The full ATM address range for VPI and VCI is supported.

To route connections between customer premise equipment and BXM ports:

Step 1 First configure the BXM for port mode.

a. The initial command to up a trunk (uptrk) or to up a line (upln) on the BXM card configures all the ports of the card to be either trunks or lines (UNI port access).

b. Afer using the uptrk command at each port, issue the addtrk command to activate a trunk for network access.

Step 2 Up the line by using the upln command

Step 3 Configure the line by using the cnfln command

Step 4 Configure the associated port by using the cnfport command

Step 5 Up the port by using the upport command

Step 6 Add the ATM connections by using the addcon command.

Parameters:

The slot number is the BXM card slot on the BPX switch.
The port number is one of the ports on the BXM
the VPI is the virtual path identifier
the VCI is the virtual circuit identifier.

Connections can be either:

Virtual Path Connections (VPC)
Virtual Path Connections are identified by an * in the VCI field.
Virtual Circuit Connections (VCC)
Virtual Circuit Connections specify both the VPI and VCI fields.

The VPI and VCI fields have significance only to the local BPX switch, and are translated by tables in the BPX switch to route the connection. Connections are automatically routed by the AutoRoute feature once the connection endpoints are specified.

Enter the following parameters for the BXM addcon command. Depending upon the connection type, you are prompted with appropriate parameters:

Syntax:

addcon local_addr node remote_addr traffic_type ...extended parameters

Field	Value	Description
local/remote_addr	slot.port.vpi.vci	card slot, port, and desired VCC or VPI connection identifier
node		slave end of connection
traffic_type		type of traffic, chosen from CBR, VBR, ABR, and UBR
extended parameters		parameters associated with each connection type

Note You can configure the range of VPIs and VCIs reserved for PVC traffic and SVC traffic by using the cnfport command. While adding connections, the system checks the entered VPI/VPC against the range reserved for SVC traffic. If there is a conflict, the addcon command fails with the message "VPI/VCI on selected port is reserved at local/remote end".

BXM Commands

This section provides a preliminary summary of configuration, provisioning, and monitoring commands associated with the BXM cards. These commands apply to initial card configuration, line and trunk configuration and provisioning, and connection configuration and provisioning.

Connection Provisioning

addcon
Add connection
cnfcon
Configure connection
dspcon
Display connection

Diagnostics

addlnloclp
Add local loopback to line
addlnlocrmtlp
Add local remote loopback to line
dellnlp
Delete local or remote loopback

Test

tstconseg
Test connection externally with OAM segment loopback cells
tstdelay
Test connection round trip delay

Statistics

Line and Trunk statistics
- cnflnstats
  Configure line statistics collection
- dsplnstatcnf
  Display statistics enabled for a line
- dsplnstathist
  Display statistics data for a line
- cnftrkstats
  Configure trunk statistics collection
- dsptrkstatcnf
  Display statistics enabled for a trunk
- dsptrkstathist
  Display statistics data for a trunk
Channel Statistics
- cnfchstats
  Configure channel statistics collection
- dspchstatcnf
  Display statistics configuration for a channel
- dspchstathist
  Display statistics data for a channel
- dspchstats
  Display channel statistics (multisession permitted)
Line Statistics
- cnfslotalm
  Configure slot alarm threshold
- dspslotalms
  Display slot alarms
- clrslotalm
  Clear slot alarm
- dspsloterrs
  Display slot errors
Statistical Trunk/Line Alarms
- cnflnalm
  Configure line alarm threshold
- dsplnerrs
  Display line errors
- dsplnalmcnf
  Display line alarm configuration
- clrlnalm
  Clear line alarm

Command Line Interface Examples

This section contains command examples, including configuring BXM lines and trunks and adding connections terminating on BXM cards.

An example of the uptrk command for trunk 1 on a BXM in slot 4 of a BPX switch:

pubsbpx1       TN    silves          BPX 8620  9.3 Aug. 2 2000 13:42 PDT 
 
TRK       Type     Current Line Alarm Status               Other End
 1.1      T3       Clear - OK                              -
 2.1      OC-3      Clear - OK                              VSI(VSI)
 4.1      OC-3      Clear - OK                              -
 
 
 
 
 
 
 
 
 
 
 
                                                                                
Last Command: uptrk 4.1
 
256 PVCs allocated. Use 'cnfrsrc' to configure PVCs
Next Command:

Note The initial command to up a trunk (uptrk) or to up a line (upln) on the BXM card configures all the ports of the card to be either trunks or lines (UNI port access). After using the uptrk command at each port, use the addtrk command to activate a trunk for network access.

An example of the cnftrk command for trunk 4.1 of a BXM card:

pubsbpx1       TN    silves          BPX 8620  9.3 March 2 2000 13:40 PDT 
 
TRK  4.1 Config    OC-3     [353207cps]     BXM slot:     2                      
Transmit Rate:         353208              Line framing:          STS-3C       
Protocol By The Card:  No                       coding:           --           
VC Shaping:            No                       CRC:              --           
Hdr Type NNI:          Yes                      recv impedance:   --           
Statistical Reserve:   1000    cps              cable type:       --           
Idle code:             7F hex                         length:     --           
Connection Channels:   256                 Pass sync:             No           
Traffic:V,TS,NTS,FR,FST,CBR,NRT-VBR,ABR, T-VBR  clock:            No           
SVC Vpi Min:           0                   HCS Masking:           Yes          
SVC Channels:          0                   Payload Scramble:      Yes          
SVC Bandwidth:         0      cps          Frame Scramble:        Yes          
Restrict CC traffic:   No                  Virtual Trunk Type:    --           
Link type:             Terrestrial         Virtual Trunk VPI:     --           
Routing Cost:          10                  Deroute delay time:    0 seconds    
                                                                                
This Command: cnftrk 4.1  
 
 
Transmit Rate [ 1-353208 ]:

An example of the addtrk command:

pubsbpx1       TN    silves         BPX 8620  9.3 March 2 2000 13:45 PDT 
 
TRK       Type     Current Line Alarm Status               Other End
 1.1      T3       Clear - OK                              -
 2.1      OC-3      Clear - OK                              VSI(VSI)
 2.4      OC-3      Clear - OK                              -
 
 
 
 
 
 
 
 
 
 
 
                                                                                
Last Command: dsptrks
 
 
Next Command:

An example of the upln command for UNI port access on a BXM card:

pubsbpx1       TN    StrataCom       BPX 8620  9.3 March 2 2000 13:54 PDT 
 
Line      Type     Current Line Alarm Status
 2.2      OC-3      Clear - OK
 2.3      OC-3      Clear - OK
 
 
 
 
 
 
 
 
 
 
 
 
                                                                                
Last Command: upln 2.2
 
256 PVCs allocated. Use 'cnfrsrc' to configure PVCs
Next Command:

Note The initial command to up a trunk (uptrk) or to up a line (upln) on the BXM card configures all the ports of the card to be either trunks or lines (UNI port access). After using the upln command at each port, use the upport command to activate a port for UNI access.

An example of the cnfln command:

pubsbpx1       TN    StrataCom       BPX 8620  9.3 Aug. 2 2000 13:55 PDT 
 
LN   2.2 Config    OC-3     [353208cps]     BXM slot:     2                      
Loop clock:            No                  Idle code:             7F hex       
                                         
Line framing:          --                
     coding:           --                
     CRC:              --                
     recv impedance:   --                
     E1 signalling:    --                
     encoding:         --                       cable type:       --           
     T1 signalling:    --                       length:           --           
                                           HCS Masking:           Yes          
                                           Payload Scramble:      Yes          
     56KBS Bit Pos:    --                  Frame Scramble:        Yes          
     pct fast modem:   --                  Cell Framing:          STS-3C       
                                           VC Shaping:            No           
                                                                                
This Command: cnfln 2.2  
 
 
Loop clock (N):

An example of the cnfport command for port 3 of a BXM card in slot 3:

pubsbpx1       TN    silves          BPX 8620  9.3 March 2 2000 13:56 PDT 
 
Port:       2.2     [INACTIVE]
Interface:          LM-BXM                     CAC Override:     Enabled
Type:               UNI                        %Util Use:        Disabled
Shift:              SHIFT ON HCF (Normal Operation)
SIG Queue Depth:    640                        Port Load:        0 %
 
Protocol:           NONE                       Protocol by Card: No
 
 
 
 
 
 
 
 
                                                                                
This Command: cnfport 2.2  
 
 
NNI Cell Header Format? [N]:

An example of the cnfportq command:


pubsbpx1       TN    silves          BPX 8620  9.3 March 2 2000 13:57 PDT 
 
Port:       2.2     [INACTIVE]
Interface:          LM-BXM
Type:               UNI
Speed:              353208 (cps)
 
SVC Queue Pool Size:          0
CBR Queue Depth:              600     rt-VBR Queue Depth:                5000
CBR Queue CLP High Threshold: 80%     rt-VBR Queue CLP High Threshold:   80%
CBR Queue CLP Low Threshold:  60%     rt-VBR Queue CLP Low/EPD Threshold: 60%
CBR Queue EFCI Threshold:     60%     rt-VBR Queue EFCI Threshold:       60%
nrt-VBR Queue Depth:          5000    UBR/ABR Queue Depth:               20000
nrt-VBR Queue CLP High Threshold: 80% UBR/ABR Queue CLP High Threshold:  80%
nrt-VBR Queue CLP Low Threshold:  60% UBR/ABR Queue CLP Low/EPD Threshold:60%
nrt-VBR Queue EFCI Threshold: 60%     UBR/ABR Queue EFCI Threshold:      20%
 
                                                                                
This Command: cnfportq 2.2  
 
 
SVC Queue Pool Size [0]:

An example of the upport command:

pubsbpx1       TN    silves          BPX 8620  9.3 March 2 2000 13:58 PDT 
 
Port:       2.2     [ACTIVE  ]
Interface:          LM-BXM                     CAC Override:     Enabled
Type:               UNI                        %Util Use:        Disabled
Shift:              SHIFT ON HCF (Normal Operation)
SIG Queue Depth:    640                        Port Load:        0 %
 
Protocol:           NONE                       Protocol by Card: No
 
 
 
 
 
 
 
 
                                                                                
Last Command: upport 2.2
 
 
Next Command:

An example of the cnfatmcls command for class 2:


pubsbpx1       TN    StrataCom       BPX 8620  9.3 March 2 2000 13:59 PDT 
 
                        ATM Connection Classes
Class:  2                                                         Type: nrt-VBR
   PCR(0+1)     % Util       CDVT(0+1)       AAL5 FBTC        SCR     
 1000/1000     100/100      10000/10000          n        1000/1000
 
     MBS         Policing
 1000/1000           3
 
       Description: "Default nrt-VBR 1000 "
 
 
 
 
 
 
                                                                                
This Command: cnfatmcls 2  
 
 
Enter class type (rt-VBR, nrt-VBR, CBR, UBR, ABRSTD, ABRFST, ATFR, ATFST, ATFT, 
ATFTFST, ATFX, ATFXFST):

An example of the cnfcls command for class 3:

pubsbpx1       TN    StrataCom       BPX 8620  9.3 March 2 2000 14:02 PDT 
 
                        ATM Connection Classes
Class:  3                                                         Type: rt-VBR
   PCR(0+1)     % Util       CDVT(0+1)       AAL5 FBTC        SCR     
 4000/4000     100/100      10000/10000          n        4000/4000
 
     MBS         Policing
 1000/1000           3
 
       Description: "Default rt-VBR 4000 "
 
 
 
 
 
 
                                                                                
This Command: cnfatmcls 3  
 
 
Enter class type (rt-VBR, nrt-VBR, CBR, UBR, ABRSTD, ABRFST, ATFR, ATFST, ATFT, 
ATFTFST, ATFX, ATFXFST):

An example of the addcon command for a VBR connection 3.1.105.55 that originates at port 2 of a BXM card in slot 2:

pubsbpx1       TN    silves          BPX 8620  9.3 March 2 2000 14:05 PDT 
 
 Local           Remote      Remote                             Route
 Channel         NodeName    Channel         State  Type        Avoid COS O
 2.2.16.16       pubsbpx1    2.3.66.66       Ok     rt-vbr
 2.3.66.66       pubsbpx1    2.2.16.16       Ok     rt-vbr
 
 
 
 
 
 
 
 
 
 
 
                                                                                
Last Command: addcon 2.2.16.16 pubsbpx1 2.3.66.66 rt-VBR * * * * * * *
 
 
Next Command:

An example of the cnfcon command for a rt-VBR connection 2.2.16.16.

pubsbpx1       TN    silves          BPX 8620  9.3 March 2 2000 14:06 PDT 
 
Conn:  2.2.16.16        pubsbpx1    2.3.66.66         rt-vbr    Status:OK
   PCR(0+1)     % Util       CDVT(0+1)       AAL5 FBTC        SCR     
   50/50       100/100     250000/250000         n          50/50
 
     MBS         Policing
 1000/1000           3
 
 
 
 
 
 
 
 
 
                                                                                
This Command: cnfcon 2.2.16.16  
 
 
PCR(0+1) [50/50]:

An example of the addcon command for an ABR connection follows. In this case, the choice to accept the default parameters was not accepted, and individual parameters were configured for a connection using ABR standard VSVD flow control.

pubsbpx1       TN    StrataCom       BPX 8620  9.3 March 2 2000 14:12 PDT 
 
 From            Remote      Remote                             Route
 2.2.17.17       NodeName    Channel         State  Type        Avoid COS O
 2.3.66.66       pubsbpx1    2.2.16.16       Ok     rt-vbr
 
 
 
 
 
 
 
 
 
 
 
 
                                                                                
This Command: addcon 2.2.17.17 pubsbpx1 2.3.67.67 abrstd 100/100 95/95 * * e e e
 d 70/70 * 3 * * * 65/65 * * * * * * * *
 
Add these connections (y/n)? y

An example of the cnfcon command for an ABR connection:

pubsbpx1       TN    silves         BPX 8620  9.3 March 2 2000 14:14 PDT 
 
Conn:  2.2.17.17        pubsbpx1    2.3.67.67         abrstd    Status:OK
   PCR(0+1)     % Util      MCR            CDVT(0+1)       AAL5 FBTC VSVD  FCES
  100/100       95/95     50/50          250000/250000         y      y     y
 
     SCR            MBS      Policing   VC Qdepth    CLP Hi CLP Lo/EDP    EFCI 
   70/70        1000/1000        3    16000/16000    80/80    35/35      65/65
 
     ICR           ADTF  Trm     RIF      RDF    Nrm     FRTT            TBE   
   50/50           1000  100        128    16     32           0        1048320
 
 
 
 
 
 
                                                                                
This Command: cnfcon 2.2.17.17  
 
 
PCR(0+1) [100/100]:

An example of the cnfabrparm command:

pubsbpx1       TN    YourID:1       BPX 15    9.3 March 8 2000 00:21 GMT 
 
ABR Configuration for BXM in slot 3
 
Egress CI Control  : N
ER Stamping        : N
Weighted Queueing  : N
 
 
 
 
 
 
 
 
 
 
                                                                                
Last Command: cnfabrparm 3
 
 
Next Command:

An example of the dsplns command:

pubsbpx1       TN    YourID       BPX 15    9.3 Jun. 8 2000 00:22 GMT 
 
Line    Type   Current Line Alarm Status
 3.1    OC-3    Clear - OK
 3.2    OC-3    Clear - OK
 3.3    OC-3    Clear - OK
 3.4    OC-3    Clear - OK
 5.1    T3     Clear - OK
 5.2    T3     Clear - OK
 
 
 
 
 
 
                                                                                
Last Command: dsplns
 
 
Next Command:

Configuring the BPX Switch LAN and IP Relay

During the configuration of BPX switch interfaces, you must make sure that the BPX switch IP address, SNMP parameters, and Network IP address are set consistent with your local area network (Ethernet LAN). Use the following BPX switch commands to set these parameters:

cnflan
This is a SuperUser command and must be used to configure the BPX switch BCC LAN port IP address and subnet mask.
cnfsnmp
This command is used to configure the SNMP Get and Set community strings for the BPX switch as follows:
- Get Community String = public
- Set Community String = private
- Trap Community String = public
cnfnwip
This is a SuperUser level command which is used to configure the virtual IP network (IP relay) among BPX switches.
cnfstatmast
This command is used to define the IP address for routing messages to and from the Statistics Manager in Cisco StrataView Plus.

The use of these commands is explained in the Cisco WAN Switching Command Reference or the Cisco WAN Switch Superuser Command Reference. Super User commands should be used only by authorized personnel, and must be used carefully.

BXM SVC Resource Partitioning

This section provides procedures for:

UNI Port Resource Partitioning, BXM
NNI or Trunk Resource Partitioning, BXM

Resources on BPX switch UNI ports and NNI trunks can be divided between:

SVCs and PVCs, or
LVCs and PVCs

This is known as resource partitioning and is done through the Command Line Interface for the BPX switch and the MGX 8220.

These resources for BXM and BNI cards can be partitioned appropriately between SVCs or PVCs.

You can have both a PNNI controller and a Cisco 6400 controller, each in its own partition controlling the same VSI slave.

The BXM supports Multiprotocol Label Switching (MPLS). You can allocate partitions for the BXM either between:

SVCs and PVCs;
OR
Label virtual circuits (LVCs) and PVCs

For information on MPLS Switching, refer to Cisco MPLS Software Configuration Guide.

A BXM card used as a UNI port can be configured to support ATM SVCs. You will need to:

Add the BXM and activate it (up it) like a standard PVC port.
Up the BXM port as a line (upln) to function as a UNI port.

Note The initial command to up a trunk (uptrk) or to up a line (upln) on the BXM configures all the physical ports on a BXM card to be either trunks or ports. They can not be intermixed.

Before partitioning SVC resources, you must determine which BXM UNI ports will support ATM SVCs. The BXM must have its resources partitioned to support SVCs.

These resources must be partitioned:

SVC Channels
SVC VPI Min
SVC VPI Max
SVC Bandwidth
SVC Queue Pool Size

For additional information on using the BPX switch command line interface and applicable commands, refer to the Cisco WAN Switching Command Reference. These procedures will concentrate on those commands that are specific to SVC resource partitioning.

To partition the BXM port, follow these steps:

Step 1 Log in to the BPX switch.

Step 2 Using the upln and upport commands, up the line and port which is going to be connected to ATM CPE.

Step 3 Make sure the port is configured as UNI.

Step 4 Enter the cnfport <port num> command, shown in the following example:

Example: BXM cnfport Command


ins-bpx6       TN    SuperUser       BPX 15    9.3 Sep. 24 2000 07:37 GMT 
 
Port:       13.1    [ACTIVE  ]
Interface:          LM-BXM
Type:               UNI                        %Util Use:        Disabled
Speed:              353208 (cps)
Shift:              SHIFT ON HCF (Normal Operation)
SIG Queue Depth:    640
 
Protocol:           NONE
  SVC Channels:                       1000
  SVC VPI Min:                        0
  SVC VPI Max:                        10
  SVC Bandwidth:                      300000 (cps)
  
                                                                                
This Command: cnfport 13.1  
 
 
NNI Cell Header Format? [N]:

Step 5 Configure the SVC Channels, SVC VPI Min, SVC VPI Max, and SVC Bandwidth as desired.

Step 6 Next you need to configure the SVC Port Queue depth with the cnfportq <portnum> command shown in the following example.

Example: BXM cnfportq Command


ins-bpx6       TN    SuperUser       BPX 15    9.3 Sep. 24 2000 07:39 GMT 
 
Port:       13.1    [ACTIVE  ]
Interface:          LM-BXM
Type:               UNI
Speed:              353208 (cps)
 
SVC Queue Pool Size:          5000
CBR Queue Depth:              600
CBR Queue CLP High Threshold: 80%
CBR Queue CLP Low Threshold:  60%
CBR Queue EFCI Threshold:     80%
VBR Queue Depth:              5000    UBR/ABR Queue Depth:               20000
VBR Queue CLP High Threshold: 80%     UBR/ABR Queue CLP High Threshold:  80%
VBR Queue CLP Low Threshold:  60%     UBR/ABR Queue CLP Low Threshold:   60%
VBR Queue EFCI Threshold:     80%     UBR/ABR Queue EFCI Threshold:      30%
 
                                                                                
This Command: cnfportq 13.1  
 
 
SVC Queue Pool Size [5000]:

Step 7 Configure the SVC Queue Pool Size parameter to a value greater than 0 (zero); the default is 0 and needs to be changed for SVCs to operate.

Step 8 Partition the SVC resources for every BXM which is to support ATM SVCs in the BPX switch.

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