ATM Switch Router Software Configuration Guide, 12.1(7a)EY - Configuring Virtual Connections [Cisco Catalyst 8500 Series Multiservice Switch Routers]

Table Of Contents

Configuring Virtual Connections

Characteristics and Types of Virtual Connections

Configuring Virtual Channel Connections

Displaying VCCs

Deleting VCCs from an Interface

Configuring Terminating PVC Connections

Displaying the Terminating PVC Connections

Configuring PVP Connections

Displaying PVP Configuration

Deleting PVPs from an Interface

Configuring Point-to-Multipoint PVC Connections

Displaying Point-to-Multipoint PVC Configuration

Configuring Point-to-Multipoint PVP Connections

Displaying Point-to-Multipoint PVP Configuration

Configuring Soft PVC Connections

Guidelines for Creating Soft PVCs

Configuring Soft PVCs

Displaying Soft PVC Configuration

Configuring Soft PVP Connections

Displaying Soft PVP Connections

Configuring the Soft PVP or Soft PVC Route Optimization Feature

Enabling Soft PVP or Soft PVC Route Optimization

Configuring a Soft PVP/PVC Interface with Route Optimization

Displaying an Interface Route Optimization Configuration

Configuring Soft PVCs with Explicit Paths

Changing Explicit Paths for an Existing Soft PVC

Displaying Explicit Path for Soft PVC Connections

Configuring Nondefault Well-Known PVCs

Overview of Nondefault PVC Configuration

Configuring Nondefault PVCs

Configuring a VPI/VCI Range for SVPs and SVCs

Displaying the VPI/VCI Range Configuration

Configuring VP Tunnels

Configuring a VP Tunnel for a Single Service Category

Configuring a Shaped VP Tunnel

Configuring a Hierarchical VP Tunnel for Multiple Service Categories

Configuring an End-Point PVC to a PVP Tunnel

Configuring Signalling VPCI for VP Tunnels

Deleting VP Tunnels

Configuring Interface and Connection Snooping

Configuring Interface Snooping

Displaying Interface Snooping

Configuring Per-Connection Snooping

Displaying Per-Connection Snooping

Input Translation Table Management

Configuring Virtual Connections

This chapter describes how to configure virtual connections (VCs) in a typical ATM network after autoconfiguration has established the default network connections. The network configuration modifications described in this chapter are used to optimize your ATM network operation.

Note This chapter provides advanced configuration instructions for the Catalyst 8540 MSR, Catalyst 8510 MSR, and LightStream 1010 ATM switch routers. For an overview of virtual connection types and applications, refer to the Guide to ATM Technology. For complete descriptions of the commands mentioned in this chapter, refer to the ATM Switch Router Command Reference publication.

The tasks to configure virtual connections are described in the following sections:

• Characteristics and Types of Virtual Connections

• Configuring Virtual Channel Connections

• Configuring Terminating PVC Connections

• Configuring PVP Connections

• Configuring Point-to-Multipoint PVC Connections

• Configuring Point-to-Multipoint PVP Connections

• Configuring Soft PVC Connections

• Configuring Soft PVP Connections

• Configuring the Soft PVP or Soft PVC Route Optimization Feature

• Configuring Soft PVCs with Explicit Paths

• Configuring Nondefault Well-Known PVCs

• Configuring a VPI/VCI Range for SVPs and SVCs

• Configuring VP Tunnels

• Configuring Interface and Connection Snooping

• Input Translation Table Management

Characteristics and Types of Virtual Connections

This section lists the various virtual connections (VC) types in Table 6-1.

Table 6-1 Supported VC Types

Connection

Point-to-
Point

Point-to-
Multipoint

Transit

Terminate

Permanent virtual channel link (PVCL)

x

x

—

—

Permanent virtual path link (PVPL)

x

x

—

—

Permanent virtual channel (PVC)

x

x

x

x

Permanent virtual path (PVP)

x

x

x

—

Soft permanent virtual channel (Soft PVC)

x

—

x

—

Soft permanent virtual path (Soft PVP)

x

—

x

—

Switched virtual channel (SVC)

x

x

x

x

Switched virtual path (SVP)

x

x

x

—

Configuring Virtual Channel Connections

This section describes configuring virtual channel connections (VCCs) on the ATM switch router. A VCC is established as a bidirectional facility to transfer ATM traffic between two ATM layer users. Figure 6-1 shows an example VCC between ATM user A and user D.

An end-to-end VCC, as shown in Figure 6-1 between user A and user D, has two parts:

•Virtual channel links, labelled VCL. These are the interconnections between switches, either directly or through VP tunnels.

•Internal connections, shown by the dotted line in the switch. These connections are also sometimes called cross-connections or cross-connects.

The common endpoint between an internal connection and a link occurs at the switch interface. The endpoint of the internal connection is also referred to as a connection leg or half-leg. A cross-connect connects two legs together.

Figure 6-1 VCC Example

Note The value of the VPIs and VCIs can change as the traffic is relayed through the ATM network.

To configure a point-to-point VCC, perform the following steps, beginning in global configuration mode:

Command

Purpose

Step 1

Switch(config)# interface atm card/subcard/port

Switch(config-if)#

Selects the interface to be configured.

Step 2

Switch(config-if)# atm pvc vpi-A [vci-A | any-vci¹] [rx-cttr index] [tx-cttr index] interface atm card/subcard/port[.vpt#] vpi-B [vci-B | any-vci¹]

Configures the PVC.

¹The any-vci parameter is only available for interface atm0.

Note The row index for rx-cttr and tx-cttr must be configured before using this optional parameter. See Chapter 8, "Configuring Resource Management."

Note When configuring PVC connections, begin with lower VCI numbers. Using low VCI numbers allows more efficient use of the switch fabric resources.

Examples

The following example shows how to configure the internal cross-connect PVC on Switch B between interface ATM 3/0/1 (VPI = 0, VCI = 50) and interface ATM 3/0/2 (VPI = 2, VCI = 100) (see Figure 6-1):
Switch-B(config)# interface atm 3/0/1
Switch-B(config-if)# atm pvc 0 50 interface atm 3/0/2 2 100
The following example shows how to configure the internal cross-connect PVC on Switch C between interface ATM 0/0/0, VPI = 2, VCI = 100, and interface ATM 0/0/1, VPI 50, VCI = 255:
Switch-C(config)# interface atm 0/0/0
Switch-C(config-if)# atm pvc 2 100 interface atm 0/0/1 50 255
Each subsequent VC cross-connection and link must be configured until the VC is terminated to create the entire VCC.

Note The above examples show how to configure cross-connections using one command. This is the preferred method, but it is also possible to configure each leg separately, then connect them with the atm pvc vpi vci interface atm card/subcard/port vpi vci command. This alternative method requires more steps, but might be convenient if each leg has many additional configuration parameters or if you have configured individual legs with SNMP commands and you want to connect them with one CLI command.

Displaying VCCs

To show the VCC configuration, use the following EXEC commands:

Command

Purpose

show atm interface [atm card/subcard/port]

Shows the ATM interface configuration.

show atm vc [interface atm card/subcard/port vpi vci]

Shows the PVC interface configuration.

Note The following examples differ depending on the feature card installed on the processor.

Examples

The following example shows the Switch B PVC configuration on ATM interface 3/0/1:
Switch-B# show atm interface
 
Interface:      ATM3/0/1        Port-type:    oc3suni
IF Status:      UP              Admin Status:   up
Auto-config:    enabled         AutoCfgState:   completed
IF-Side:        Network         IF-type:        NNI
Uni-type:       not applicable  Uni-version:    not applicable
Max-VPI-bits:   8               Max-VCI-bits:   14
Max-VP:         255             Max-VC:         16383
ConfMaxSvpcVpi: 255             CurrMaxSvpcVpi: 255
ConfMaxSvccVpi: 255             CurrMaxSvccVpi: 255
ConfMinSvccVci: 35              CurrMinSvccVci: 35
Svc Upc Intent: pass            Signalling:     Enabled
ATM Address for Soft VC: 47.0091.8100.0000.00e0.4fac.b401.4000.0c80.8000.00
Configured virtual links:
  PVCLs SoftVCLs   SVCLs   TVCLs   PVPLs SoftVPLs   SVPLs Total-Cfgd Inst-Conns
      4        0       0       0       0        0       0          4          2
Logical ports(VP-tunnels):     0
Input cells:    264330          Output cells:   273471
5 minute input rate:             0 bits/sec,       0 cells/sec
5 minute output rate:            0 bits/sec,       0 cells/sec
Input AAL5 pkts: 172613, Output AAL5 pkts: 177185, AAL5 crc errors: 0
The following example shows the Switch B PVC configuration on ATM interface 3/0/1:
Switch-B# show atm vc interface atm 3/0/1
Interface    VPI   VCI   Type    X-Interface  X-VPI X-VCI  Encap Status
ATM3/0/1     0     5      PVC     ATM0         0     57    QSAAL  UP
ATM3/0/1     0     16     PVC     ATM0         0     37    ILMI   UP
ATM3/0/1     0     18     PVC     ATM0         0     73    PNNI   UP
ATM3/0/1     0     50     PVC     ATM3/0/2     2     100          UP
ATM3/0/1     1     50     PVC     ATM0         0     80    SNAP   UP
The following example shows the Switch B PVC configuration on ATM interface 3/0/1, VPI = 0, VCI = 50, with the switch processor feature card installed:
Switch-B# show atm vc interface atm 3/0/1 0 50
Interface: ATM3/0/1, Type: oc3suni
VPI = 0  VCI = 50
Status: UP
Time-since-last-status-change: 4d02h
Connection-type: PVC
Cast-type: point-to-point
Packet-discard-option: disabled
Usage-Parameter-Control (UPC): pass
Wrr weight: 32
Number of OAM-configured connections: 0
OAM-configuration: disabled
OAM-states:  Not-applicable
Cross-connect-interface: ATM3/0/2, Type: oc3suni
Cross-connect-VPI = 2
Cross-connect-VCI = 100
Cross-connect-UPC: pass
Cross-connect OAM-configuration: disabled
Cross-connect OAM-state:  Not-applicable
Threshold Group: 5, Cells queued: 0
Rx cells: 0, Tx cells: 0
Tx Clp0:0,  Tx Clp1: 0
Rx Clp0:0,  Rx Clp1: 0
Rx Upc Violations:0, Rx cell drops:0
Rx Clp0 q full drops:0, Rx Clp1 qthresh drops:0
Rx connection-traffic-table-index: 1
Rx service-category: UBR (Unspecified Bit Rate)
Rx pcr-clp01: 7113539
Rx scr-clp01: none
Rx mcr-clp01: none
Rx      cdvt: 1024 (from default for interface)
Rx       mbs: none
Tx connection-traffic-table-index: 1
Tx service-category: UBR (Unspecified Bit Rate)
Tx pcr-clp01: 7113539
Tx scr-clp01: none
Tx mcr-clp01: none
Tx      cdvt: none
Tx       mbs: none
Deleting VCCs from an Interface

This section describes how to delete a VCC configured on an interface. To delete a VCC, perform the following steps, beginning in global configuration mode:

Command

Purpose

Step 1

Switch(config)# interface atm card/subcard/port

Switch(config-if)#

Selects the interface to be configured.

Step 2

Switch(config-if)# no atm pvc vpi vci

Deletes the PVC.

Example

The following example shows how to delete the VCC on ATM interface 3/0/0, VPI = 20, VCI = 200:
Switch(config-if)# interface atm 3/0/0
Switch(config-if)# no atm pvc 20 200 
Confirming VCC Deletion

To confirm the deletion of a VCC from an interface, use the following EXEC command before and after deleting the VCC:

Command

Purpose

show atm vc interface atm card/subcard/port [vpi vci]

Shows the PVCs configured on the interface.

Example

The following example shows how to confirm that the VCC is deleted from the interface:
Switch# show atm vc interface atm 3/0/0
Interface         VPI  VCI   Type   X-Interface      X-VPI X-VCI Encap  Status 
ATM3/0/0          0    5     PVC    ATM2/0/0          0    77    QSAAL  UP
ATM3/0/0          0    16    PVC    ATM2/0/0          0    55    ILMI   UP
ATM3/0/0          0    18    PVC    ATM2/0/0          0    152   PNNI   UP
ATM3/0/0          0    34    PVC    ATM2/0/0          0    151   NCDP   UP
ATM3/0/0          20   200   PVC    ATM1/1/1          10   100          DOWN
Switch# configure terminal
Switch(config)# interface atm 3/0/0
Switch(config-if)# no atm pvc 20 200 
Switch(config-if)# end
Switch# show atm vc interface atm 3/0/0
Interface         VPI  VCI   Type   X-Interface      X-VPI X-VCI Encap  Status 
ATM3/0/0          0    5     PVC    ATM2/0/0          0    77    QSAAL  UP
ATM3/0/0          0    16    PVC    ATM2/0/0          0    55    ILMI   UP
ATM3/0/0          0    18    PVC    ATM2/0/0          0    152   PNNI   UP
ATM3/0/0          0    34    PVC    ATM2/0/0          0    151   NCDP   UP
Configuring Terminating PVC Connections

This section describes configuring point-to-point and point-to-multipoint terminating permanent virtual channel (PVC) connections. Terminating connections provide the connection to the ATM switch router's route processor for LAN emulation (LANE), IP over ATM, and control channels for Integrated Local Management Interface (ILMI), signalling, and Private Network-Network Interface (PNNI) plus network management.

Figure 6-2 shows an example of transit and terminating connections.

Figure 6-2 Terminating PVC Types

Point-to-point and point-to-multipoint are two types of terminating connections. Both terminating connections are configured using the same commands as transit connections (discussed in the previous sections). However, all switch terminating connections use interface atm0 to connect to the route processor.

Note Since release 12.0(1a)W5(5b) of the system software, addressing the interface on the processor (CPU) has changed. The ATM interface is now called atm0, and the Ethernet interface is now called ethernet0. The old formats (atm 2/0/0 and ethernet 2/0/0) are still supported.

To configure both point-to-point and point-to-multipoint terminating PVC connections, perform the following steps, beginning in global configuration mode:

Command

Purpose

Step 1

Switch(config)# interface atm card-A/subcard-A/port-A[.vpt#]

Switch(config-if)#

Selects the interface to be configured.

Step 2

Switch(config-if)# atm pvc vpi-A [vci-A | any-vci¹] [cast-type type] [rx-cttr index]
[tx-cttr index] interface atm card-B/subcard-B/port-B[.vpt#] vpi-B [vci-B | any-vci¹] [encap type] [cast-type type]

Configures the PVC between ATM switch router connections.

¹The any-vci feature is only available for interface atm 0.

When configuring point-to-multipoint PVC connections using the atm pvc command, the root point is port A and the leaf points are port B.

Note The row index for rx-cttr and tx-cttr must be configured before using this optional parameter. See Chapter 8, "Configuring Resource Management."

Examples

The following example shows how to configure the internal cross-connect PVC between interface ATM 3/0/1, VPI = 1, VCI = 50, and the terminating connection at the route processor interface ATM 0, VPI = 0, and VCI unspecified:
Switch-B(config)# interface atm 3/0/1
Switch-B(config-if)# atm pvc 1 50 interface atm0 0 any-vci encap aal5snap
The following example shows how to configure the route processor leg of any terminating PVC:
Switch(config)# interface atm0
Switch(config-if)# atm pvc 0 any-vci
When configuring the route processor leg of a PVC that is not a tunnel, the VPI should be configured as 0. The preferred method of VCI configuration is to select the any-vci parameter, unless a specific VCI is needed as a parameter in another command, such as map-list.

Note If configuring a specific VCI value for the route processor leg, select a VCI value higher than 300 to prevent a conflict with an automatically assigned VCI for well-known channels if the ATM switch router reboots.

Displaying the Terminating PVC Connections

To display the terminating PVC configuration VCs on the interface, use the following EXEC command:

Command

Purpose

show atm vc interface atm card/subcard/port vpi vci

Shows the PVC configured on the interface.

See Displaying VCCs for examples of the show atm vc commands.

Configuring PVP Connections

This section describes configuring a permanent virtual path (PVP) connection. Figure 6-3 shows an example of PVPs configured through the ATM switch routers.

Figure 6-3 Virtual Path Connection Example

To configure a PVP connection, perform the following steps, beginning in global configuration mode:

Command

Purpose

Step 1

Switch(config)# interface atm card/subcard/port

Switch(config-if)#

Selects the physical interface to be configured.

Step 2

Switch(config-if)# atm pvp vpi-A [rx-cttr index] [tx-cttr index] interface atm card/subcard/port vpi-B

Configures the interface PVP.

Note The row index for rx-cttr and tx-cttr must be configured before using this optional parameter. See Chapter 8, "Configuring Resource Management."

Note When configuring PVP connections, begin with lower virtual path identifier (VPI) numbers. Using low VPI numbers allows more efficient use of the switch fabric resources.

Examples

The following example shows how to configure the internal cross-connect PVP within Switch B between interfaces 4/0/0, VPI = 30, and interface ATM 1/1/1, VPI = 45:
Switch-B(config)# interface atm 4/0/0
Switch-B(config-if)# atm pvp 30 interface atm 1/1/1 45
The following example shows how to configure the internal cross-connect PVP within Switch C between interfaces 0/1/3, VPI = 45, and interface ATM 1/1/0, VPI = 50:
Switch-C(config)# interface atm 0/1/3
LS1010(config-if)# atm pvp 45 interface atm 1/1/0 50
Each subsequent PVP cross connection and link must be configured until the VP is terminated to create the entire PVP.

Displaying PVP Configuration

To show the ATM interface configuration, use the following EXEC command:

Command

Purpose

show atm vp [interface atm card/subcard/port vpi]

Shows the ATM VP configuration.

Example

The following example shows the PVP configuration of Switch B:
Switch-B# show atm vp
Interface    VPI    Type  X-Interface     X-VPI     Status
ATM1/1/1     45      PVP     ATM4/0/0     30        UP
ATM4/0/0     30      PVP     ATM1/1/1     45        UP
The following example shows the PVP configuration of Switch B with the switch processor feature card installed:
Switch-B# show atm vp interface atm 4/0/0 30
 
Interface: ATM4/0/0, Type: ds3suni
VPI = 30
Status: UP
Time-since-last-status-change: 00:09:02
Connection-type: PVP
Cast-type: point-to-point
Usage-Parameter-Control (UPC): pass
Wrr weight: 2
Number of OAM-configured connections: 0
OAM-configuration: disabled
OAM-states:  Not-applicable
Cross-connect-interface: ATM1/1/1, Type: oc3suni
Cross-connect-VPI = 45
Cross-connect-UPC: pass
Cross-connect OAM-configuration: disabled
Cross-connect OAM-state:  Not-applicable
Threshold Group: 5, Cells queued: 0
Rx cells: 0, Tx cells: 0
Tx Clp0:0,  Tx Clp1: 0
Rx Clp0:0,  Rx Clp1: 0
Rx Upc Violations:0, Rx cell drops:0
Rx Clp0 q full drops:0, Rx Clp1 qthresh drops:0
Rx connection-traffic-table-index: 1
Rx service-category: UBR (Unspecified Bit Rate)
Rx pcr-clp01: 7113539
Rx scr-clp01: none
Rx mcr-clp01: none
Rx      cdvt: 1024 (from default for interface)
Rx       mbs: none
Tx connection-traffic-table-index: 1
Tx service-category: UBR (Unspecified Bit Rate)
Tx pcr-clp01: 7113539
Tx scr-clp01: none
Tx mcr-clp01: none
Tx      cdvt: none
Tx       mbs: none
Deleting PVPs from an Interface

This section describes how to delete a PVP configured on an interface. To delete a PVP, perform the following steps, beginning in global configuration mode:

Command

Purpose

Step 1

Switch(config)# interface atm card/subcard/port

Switch(config-if)#

Selects the interface to be configured.

Step 2

Switch(config-if)# no atm pvp vpi

Deletes the PVP.

Example

The following example shows how to delete the PVP on ATM interface 1/1/0, VPI = 200:
Switch(config-if)# interface atm 1/1/0
Switch(config-if)# no atm pvp 200 
Confirming PVP Deletion

To confirm the deletion of a PVP from an interface, use the following EXEC command before and after deleting the PVP:

Command

Purpose

show atm vp interface atm [card/subcard/port vpi]

Shows the PVCs configured on the interface.

Example

The following example shows how to confirm that the PVP is deleted from the interface:
Switch# show atm vp
Interface         VPI  Type  X-Interface	X-VPI     Status
ATM1/1/0          113  PVP    TUNNEL
ATM1/1/0          200  PVP    ATM1/1/1	100 DOWN
ATM1/1/1          1    PVP    SHAPED TUNNEL
ATM1/1/1          100  PVP    ATM1/1/0	200 DOWN
Switch# configure terminal
Switch(config)# interface atm 1/1/0
Switch(config-if)# no atm pvp 200
Switch(config-if)# end
Switch# show atm vp
Interface         VPI  Type  X-Interface	X-VPI     Status
ATM1/1/0          113  PVP    TUNNEL
ATM1/1/1          1    PVP    SHAPED TUNNEL
Switch#
Configuring Point-to-Multipoint PVC Connections

This section describes configuring point-to-multipoint PVC connections. In Figure 6-4, cells entering the ATM switch router at the root point (on the left side at interface ATM 0/0/0, VPI = 50, VCI = 100) are duplicated and switched to the leaf points (output interfaces) on the right side of the figure.

Figure 6-4 Point-to-Multipoint PVC Example

Note If desired, one of the leaf points can terminate in the ATM switch router at the route processor interface ATM 0.

To configure the point-to-multipoint PVC connections shown in Figure 6-4, perform the following steps, beginning in global configuration mode:

Command

Purpose

Step 1

Switch(config)# interface atm card/subcard/port[.vpt#]

Switch(config-if)#

Selects the interface to be configured.

Step 2

Switch(config-if)# atm pvc vpi-A vci-A [cast-type type-A] [rx-cttr index] [tx-cttr index] interface atm card/subcard/port[.vpt#] vpi-B vci-B [cast-type type-B]

Configures the PVC between ATM switch router connections.

To configure the point-to-multipoint PVC connections using the atm pvc command, the root point is port A and the leaf points are port B.

Note The row index for rx-cttr and tx-cttr must be configured before using this optional parameter. See Chapter 8, "Configuring Resource Management."

Examples

The following example shows how to configure the root-point PVC on ATM switch router interface ATM 0/0/0, VPI = 50, VCI = 100, to the leaf-point interfaces (see Figure 6-4):
Switch(config)# interface atm 0/0/0
Switch(config-if)# atm pvc 50 100 cast-type p2mp-root interface atm 0/1/0 60 200 cast-type p2mp-leaf
Switch(config-if)# atm pvc 50 100 cast-type p2mp-root interface atm 0/1/1 70 210 cast-type p2mp-leaf
Switch(config-if)# atm pvc 50 100 cast-type p2mp-root interface atm 0/1/2 80 220 cast-type p2mp-leaf
Displaying Point-to-Multipoint PVC Configuration

To display the point-to-multipoint PVC configuration, use the following EXEC mode command:

Command

Purpose

show atm vc interface atm card/subcard/port

Shows the PVCs configured on the interface.

show atm vc interface atm card/subcard/port vpi vci

Shows the PVCs configured on the interface.

Examples

The following example shows the PVC configuration of the point-to-multipoint connections on ATM interface 0/0/0:
Switch# show atm vc interface atm 0/0/0
Interface         VPI  VCI   Type   X-Interface      X-VPI X-VCI Encap  Status
ATM0/0/0          0    5     PVC    ATM2/0/0          0    70    QSAAL  UP
ATM0/0/0          0    16    PVC    ATM2/0/0          0    46    ILMI   UP
ATM0/0/0          0    18    PVC    ATM2/0/0          0    120   PNNI   UP
ATM0/0/0          0    34    PVC    ATM2/0/0          0    192   NCDP   UP
ATM0/0/0          50   100   PVC    ATM0/1/0          60   200          UP
                                    ATM0/1/1          70   210          UP
                                    ATM0/1/2          80   220          UP
The following example shows the VC configuration on interface ATM 0/0/0, VPI = 50, VCI = 100, with the switch processor feature card installed:
Switch# show atm vc interface atm 0/0/0 50 100
 
Interface: ATM0/0/0, Type: oc3suni
VPI = 50  VCI = 100
Status: UP
Time-since-last-status-change: 00:07:06
Connection-type: PVC
Cast-type: point-to-multipoint-root
Packet-discard-option: disabled
Usage-Parameter-Control (UPC): pass
Wrr weight: 32
Number of OAM-configured connections: 0
OAM-configuration: disabled
OAM-states:  Not-applicable
Cross-connect-interface: ATM0/1/0, Type: oc3suni
Cross-connect-VPI = 60
Cross-connect-VCI = 200
Cross-connect-UPC: pass
Cross-connect OAM-configuration: disabled
Cross-connect OAM-state:  Not-applicable
Cross-connect-interface: ATM0/1/1
Cross-connect-VPI = 70
Cross-connect-VCI = 210
Cross-connect-interface: ATM0/1/2
Cross-connect-VPI = 80
Cross-connect-VCI = 220
Threshold Group: 5, Cells queued: 0
Rx cells: 0, Tx cells: 0
Tx Clp0:0,  Tx Clp1: 0
Rx Clp0:0,  Rx Clp1: 0
Rx Upc Violations:0, Rx cell drops:0
Rx Clp0 q full drops:0, Rx Clp1 qthresh drops:0
Rx connection-traffic-table-index: 1
Rx service-category: UBR (Unspecified Bit Rate)
Rx pcr-clp01: 7113539
Rx scr-clp01: none
Rx mcr-clp01: none
Rx      cdvt: 1024 (from default for interface)
Rx       mbs: none
Tx connection-traffic-table-index: 1
Tx service-category: UBR (Unspecified Bit Rate)
Tx pcr-clp01: 7113539
Tx scr-clp01: none
Tx mcr-clp01: none
Tx      cdvt: none
Tx       mbs: none 
Configuring Point-to-Multipoint PVP Connections

This section describes configuring point-to-multipoint PVP connections. Figure 6-5 provides an example of point-to-multipoint PVP connections.

Figure 6-5 Point-to-Multipoint PVP Example

In Figure 6-5, cells entering the ATM switch router at the root point (the left side at interface ATM 4/0/0), VPI = 50, are duplicated and switched to the leaf points (output interfaces), on the right side of the figure.

To configure point-to-multipoint PVP connections, perform the following steps, beginning in global configuration mode:

Command

Purpose

interface atm card-A/subcard-A/port-A

Selects the interface to be configured.

To configure the point-to-multipoint PVP connections using the atm pvp command, the root point is port A and the leaf points are port B.

Note The row index for rx-cttr and tx-cttr must be configured before using this optional parameter. See Chapter 8, "Configuring Resource Management."

Examples

The following example shows how to configure the root-point PVP on ATM switch router interface ATM 4/0/0 (VPI = 50), to the leaf point interfaces ATM 1/1/1 (VPI = 60), ATM 3/0/0 (VPI = 70), and ATM 3/0/3 (VPI = 80) (see Figure 6-5):
Switch(config)# interface atm 4/0/0
Switch(config-if)# atm pvp 50 cast-type p2mp-root interface atm 1/1/1 60 cast-type p2mp-leaf
Switch(config-if)# atm pvp 50 cast-type p2mp-root interface atm 3/0/0 70 cast-type p2mp-leaf
Switch(config-if)# atm pvp 50 cast-type p2mp-root interface atm 3/0/3 80 cast-type p2mp-leaf
Displaying Point-to-Multipoint PVP Configuration

To display the ATM interface configuration, use the following EXEC command:

Command

Purpose

show atm vp [interface atm card/subcard/port vpi]

Shows the ATM VP configuration.

Examples

The following example shows the PVP configuration of the point-to-multipoint PVP connections on ATM interface 4/0/0:
Switch# show atm vp interface atm 4/0/0
Interface    VPI    Type  X-Interface     X-VPI     Status
ATM4/0/0     50      PVP     ATM1/1/1     60        UP
                             ATM3/0/0     70        UP
                             ATM3/0/3     80        UP
The following example shows the PVP configuration of the point-to-multipoint PVP connections on ATM interface 4/0/0, VPI = 50, with the switch processor feature card installed:
Switch# show atm vp interface atm 4/0/0 50
 
Interface: ATM4/0/0, Type: ds3suni
VPI = 50
Status: UP
Time-since-last-status-change: 00:01:51
Connection-type: PVP
Cast-type: point-to-multipoint-root
Usage-Parameter-Control (UPC): pass
Wrr weight: 2
Number of OAM-configured connections: 0
OAM-configuration: disabled
OAM-states:  Not-applicable
Cross-connect-interface: ATM1/1/1, Type: oc3suni
Cross-connect-VPI = 60
Cross-connect-UPC: pass
Cross-connect OAM-configuration: disabled
Cross-connect OAM-state:  Not-applicable
Cross-connect-interface: ATM3/0/0
Cross-connect-VPI = 70
Cross-connect-interface: ATM3/0/3
Cross-connect-VPI = 80
Threshold Group: 5, Cells queued: 0
Rx cells: 0, Tx cells: 0
Tx Clp0:0,  Tx Clp1: 0
Rx Clp0:0,  Rx Clp1: 0
Rx Upc Violations:0, Rx cell drops:0
Rx Clp0 q full drops:0, Rx Clp1 qthresh drops:0
Rx connection-traffic-table-index: 1
Rx service-category: UBR (Unspecified Bit Rate)
Rx pcr-clp01: 7113539
Rx scr-clp01: none
Rx mcr-clp01: none
Rx      cdvt: 1024 (from default for interface)
Rx       mbs: none
Tx connection-traffic-table-index: 1
Tx service-category: UBR (Unspecified Bit Rate)
Tx pcr-clp01: 7113539
Tx scr-clp01: none
Tx mcr-clp01: none
Tx      cdvt: none
Tx       mbs: none
 
Configuring Soft PVC Connections

This section describes configuring soft permanent virtual channel (PVC) connections, which provide the following features:

•Connection to another host or ATM switch router that supports signalling

•Configuration of PVCs without the manual configuration steps described in Configuring Virtual Channel Connections

•Configuration of PVCs with the reroute or retry capabilities when a failure occurs in the network

Figure 6-6 illustrates the soft PVC connections used in the following examples.

Figure 6-6 Soft PCV Connection Example

Guidelines for Creating Soft PVCs

Perform the following steps when you configure soft PVCs:

Step 1 Determine which two ports you want to define as participants in the soft PVC.

Step 2 Decide which of these two ports you want to designate as the destination (or passive) side of the soft PVC.

This decision is arbitrary—it makes no difference which port you define as the destination end of the circuit.

Step 3 Retrieve the ATM address of the destination end of the soft PVC using the show atm address command.

Step 4 Retrieve the VPI/VCI values for the circuit using the show atm vc command.

Step 5 Configure the source (active) end of the soft PVC. At the same time, complete the soft PVC setup using the information derived from Step 3 and Step 4. Be sure to select an unused VPI/VCI value (one that does not appear in the show atm vc display).

Note To ensure that the soft PVCs are preserved during a route processor switchover, you must configure the switch to synchronize dynamic information between the route processors. For more information, see Chapter 3, "Initially Configuring the ATM Switch Router."

Configuring Soft PVCs

To configure a soft PVC connection, perform the following steps, beginning in privileged EXEC mode:

Command

Purpose

Step 1

Switch# show atm addresses

Determines the destination ATM address.

Step 2

Switch# configure terminal

Switch(config)#

At the privileged EXEC prompt, enters configuration mode from the terminal.

Step 3

Switch(config)# interface atm card/subcard/port[.vpt#]

Switch(config-if)#

Selects the interface to be configured.

Step 4

Switch(config-if)# atm soft-vc source-vpi source-vci dest-address atm-address dest-vpi dest-vci [enable | disable] [upc upc] [pd pd] [rx-cttr index] [tx-cttr index]
[retry-interval [first interval]
[maximum interval]] [redo-explicit [explicit-path precedence {name path-name | identifier path-id} [upto partial-entry-index]] [only-explicit]]

Configures the soft PVC connection.

Note The row index for rx-cttr and tx-cttr must be configured before using this optional parameter. See Chapter 8, "Configuring Resource Management."

Examples

The following example shows the destination ATM address of the interface connected to User D:
Switch-C# show atm addresses
Switch Address(es):
  47.00918100000000400B0A2A81.00400B0A2A81.00 active
  47.00918100000000E04FACB401.00E04FACB401.00
 
Soft VC Address(es):
<Information deleted>
  47.0091.8100.0000.00e0.4fac.b401.4000.0c80.9000.00 ATM1/1/0
    47.0091.8100.0000.00e0.4fac.b401.4000.0c80.9010.00 ATM1/1/1
  47.0091.8100.0000.00e0.4fac.b401.4000.0c80.9020.00 ATM1/1/2
<Information deleted>
The following example shows how to configure a soft PVC on Switch B between interface ATM 0/0/2, source VPI = 0, VCI = 1000; and Switch C, destination VPI = 0, VCI = 1000 with a specified ATM address (see Figure 6-6):
Switch-B(config)# interface atm 0/0/2
Switch-B(config-if)# atm soft-vc 0 1000 dest-address 47.0091.8100.0000.00e0.4fac.b401.4000.0c80.9010.00 0 
1000 
Displaying Soft PVC Configuration

To display the soft PVC configuration at either end of a ATM switch router, use the following EXEC commands:

Command

Purpose

show atm vc interface atm card/subcard/port

Shows the VCs configured on the ATM interface.

show atm vc interface atm card/subcard/port
vpi vci

Shows the soft PVC interface configuration.

Examples

The following example shows the soft PVC configuration of Switch B, on interface ATM 0/0/2 out to the ATM network:
Switch-B# show atm vc interface atm 0/0/2
Interface         VPI  VCI   Type   X-Interface      X-VPI X-VCI Encap  Status
ATM0/0/2          0    5     PVC    ATM0              0    45    QSAAL  UP
ATM0/0/2          0    16    PVC    ATM0              0    37    ILMI   UP
ATM0/0/2          0    18    PVC    ATM0              0    52    PNNI   UP
ATM0/0/2          0    34    PVC    ATM0              0    51    NCDP   UP
ATM0/0/2          0    35    SVC    ATM0/0/2          0    1000         UP
ATM0/0/2          0    1000  SoftVC ATM0/0/2          0    35           UP
The following example shows the soft PVC configuration of Switch C, on interface ATM 1/1/1 out to the ATM network:
Switch-C# show atm vc interface atm 1/1/1
Interface         VPI  VCI   Type   X-Interface      X-VPI X-VCI Encap  Status
ATM1/1/1          0    5     PVC    ATM2/0/0          0    74    QSAAL  UP
ATM1/1/1          0    16    PVC    ATM2/0/0          0    44    ILMI   UP
ATM1/1/1          0    18    PVC    ATM2/0/0          0    109   PNNI   UP
ATM1/1/1          0    34    PVC    ATM2/0/0          0    120   NCDP   UP
ATM1/1/1          0    123   SVC    ATM1/1/1          0    1000         UP
ATM1/1/1          0    1000  SoftVC ATM1/1/1          0    123          UP
ATM1/1/1          2    100   PVC    ATM2/0/0          0    103   SNAP   UP
The following example shows the soft PVC configuration of Switch B, on interface ATM 0/0/2 (VPI = 0, VCI = 1000) out to the ATM network with the switch processor feature card installed:
Switch-B# show atm vc interface atm 0/0/2 0 1000
 
Interface: ATM0/0/2, Type: oc3suni
VPI = 0  VCI = 1000
Status: UP
Time-since-last-status-change: 21:56:48
Connection-type: SoftVC
Cast-type: point-to-point
 Soft vc location: Source
  Remote ATM address: 47.0091.8100.0000.0040.0b0a.2a81.4000.0c80.9010.00
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