异步传输模式 (ATM) : 虚拟路径 (Virtual Path) 交换及隧道

使用成形 VP 隧道的 LANE、CES 和 VBR PVC

2015 年 8 月 28 日 - 机器翻译
其他版本: PDFpdf | 英语 (2015 年 4 月 22 日) | 反馈


目录


简介

本文显示配置示例LAN仿真(LANE)、电路仿真服务(CES)和可变比特率(VBR)永久虚拟连接(PVC)在整形的虚拟路径通道。在本文显示的配置中, LANE、CES和可变比特率非实时(vbr-nrt) PVC在广域网间传输。这些示例使用整形VP隧道保证遵照约定的数据流。当曾经整形有流量参数的VP隧道相同与服务提供商,服务提供商的ATM网络不应该丢弃任何信元。

VP隧道必须是恒定比特率(CBR)服务类别为了被整形:它当前是该唯一的成形隧道思科支持。您必须有三个VP隧道,因为LANE使用未指明的比特率(UBR)交换虚拟连接(SVC), CES用途CBR PVC,您有VBR PVC,并且您使用整形的VP隧道。您有一每个服务类别的:CBR虚拟信道(VC)和UBR VC。通过使用分层VP通道,您可能使用了一个通道。

先决条件

要求

本文档的读者应掌握以下这些主题的相关知识:

使用的组件

本文档中的信息基于以下软件和硬件版本:

  • Cisco IOS 软件版本11.3(0.8)TWA4 ASP或以上为LightStream1010 (LS1010)

  • Cisco 8540-MSR的任何版本

本文档中的信息都是基于特定实验室环境中的设备编写的。本文档中使用的所有设备最初均采用原始(默认)配置。如果您使用的是真实网络,请确保您已经了解所有命令的潜在影响。

规则

有关文档规则的详细信息,请参阅 Cisco 技术提示规则

假定

在本文显示的示例假设这些事实:

  • 成形隧道必须是CBR服务种类,因此此示例有能只包含CBR VC的一个CBR VP隧道。它使用CES CBR PVC (被标记VPI1网络图中)。注意虚拟路径标识符(VPI)编号是局部重要的对交换机端口,因此您能有在同一交换机的同一个VPI编号,但是两不同的交换机端口。

  • 由于整形的VP隧道不能同时传输多个服务类别VC,用于CBR VC的第一个VP隧道不可能用于LANE UBR VC或vbr-nrt PVC。您必须创建(另一个VP隧道使用UBR服务类别VC)的LANE的。所以,第二个VP隧道(被标记VPI2网络图中)是仅UBR VC允许的一个CBR成形的VP隧道。

  • 第三成形的VP隧道传输vbr-nrt PVC (被标记VPI3网络图中)。

  • 您需要采购从服务提供商的三CBR VPs。

  • 假设,三CBR VPs有10 Mbps峰值信元速率和500个信元信元延迟变化容限。注意所有VP隧道PCR的总和在同一个物理接口定义的一定小于物理接口的线路速率的95百分比(假设,仅VP隧道在物理接口配置)。

  • 对于VBR PVC,平均信元速率PVC小于CBR成形的VP隧道的PCR的95百分比一定。换句话说, PVC SCR小于vbr-nrt的9.5 Mbps一定。如果多个通过CBR的VBR PVC小于成形的VP隧道的PCR的95百分比建立隧道,所有VBR PVC SCR的总和一定。5百分比保持为发信号和其他必须协议保留。

  • 设备5500-asp-f是为VP交换。服务提供商典型地执行此功能。

  • LANE服务在8540-MSR定义;LAN仿真客户端(LEC)在8540-MSR和5500 aspe定义。

    注意: 在本例中, LANE服务在为了简化的ATM交换机被放置。那不是,然而, LANE服务的最佳位置。LAN仿真服务器(LES)或广播及未知服务器的(BUS)最好的地方在Catalyst 5500的LANE模块。LEC的理想的地方在Cisco 7500系列路由器。

  • 两个专用分支交换(PBX)在本图中使用CES CBR电路。关于关于怎样的详细信息配置电路仿真,参考配置电路仿真服务

配置

本部分提供有关如何配置本文档所述功能的信息。

注意: 要查找本文档所用命令的其他信息,请使用命令查找工具仅限注册用户)。

网络图

点击交换机在此图表中查看配置示例:

/image/gif/paws/10493/PVPshap.gif

配置

本文档使用以下配置:

5500 aspe配置示例

5500 aspe
5500-asp-e# show running-config

Building configuration...
Current configuration:
!
version 11.3
no service pad
service timestamps debug datetime msec
service timestamps log uptime
no service password-encryption
!
hostname 5500-asp-e
!
boot system flash slot0:LS1010-wp-mz.120-3c.W5.9.bin
!
ip host-routing
!
atm connection-traffic-table-row index 63997 vbr-nrt pcr 20480 scr10 9000  mbs 100
atm connection-traffic-table-row index 64000 cbr pcr 10240  cdvt 500
atm lecs-address-default 47.0091.8100.0000.0090.2144.8401.0090.2144.8405.00 1
atm address 47.0091.8100.0000.0050.537e.1401.0050.537e.1401.00
atm router pnni
 no aesa embedded-number left-justified
 node 1 level 56 lowest
  redistribute atm-static
!
!
!
interface CBR10/0/0
 no ip address
 ces circuit 0 circuit-name test
 ces pvc 0 interface ATM11/0/1.6 vpi 6 vci 100
!
interface ATM11/0/1
 no atm signaling enable
 no ip address
 atm pvp 5 shaped rx-cttr 64000 tx-cttr 64000
 atm pvp 6 shaped rx-cttr 64000 tx-cttr 64000
 atm pvp 7 shaped rx-cttr 64000 tx-cttr 64000
!
interface ATM11/0/1.5 point-to-point
 atm cac service-category cbr deny
 atm cac service-category ubr permit
!
interface ATM11/0/1.6 point-to-point
!
interface ATM11/0/1.7 point-to-point
 atm cac service-category cbr deny
 atm cac service-category vbr-nrt permit
 atm pvc 7 100 rx-cttr 63997 tx-cttr 63997  interface  ATM10/1/0 0 100
!
interface ATM11/0/2
 no ip address
!
interface ATM11/0/3
 no ip address
!
interface ATM11/1/0
 no ip address
!
interface ATM11/1/1
 no ip address
!
interface ATM11/1/2
 no ip address
!
interface ATM11/1/3
 no ip address
!
interface ATM13/0/0
 no ip address
 atm maxvp-number 0
!
interface ATM13/0/0.1 multipoint
 ip address 100.100.100.2 255.255.255.0
 lane client ethernet test
!
interface Ethernet13/0/0
 no ip address
!
no ip classless
logging buffered 16000 debugging
!
line con 0
line aux 0
line vty 0 4
 login
!
end

功能显示

您能使用显示in命令此部分验证在设备的配置功能。命令输出解释程序工具仅限注册用户)支持某些 show 命令,使用此工具可以查看对 show 命令输出的分析。

注意: 您能使用其他显示命令验证配置;不是所有在本文包括。

要保证所有LANE VC在正确VP隧道间去(换句话说,防止发信号启动通过主接口),发信号使用no atm signaling enable命令,在接口atm11/0/1禁用。同一操作在8540-MSR被执行了。

要看到哪些VC通过与VPI的VP隧道通过7,请发出show atm vc interface interface-number命令

5500-asp-e# show atm vc interface atm11/0/1.7

Interface    VPI   VCI   Type    X-Interface  X-VPI X-VCI  Encap Status

ATM11/0/1.7  7     3      PVC     ATM13/0/0    0     181   SNAP   UP
ATM11/0/1.7  7     4      PVC     ATM13/0/0    0     182   SNAP   UP
ATM11/0/1.7  7     5      PVC     ATM13/0/0    0     180   QSAAL  UP
ATM11/0/1.7  7     16     PVC     ATM13/0/0    0     179   ILMI   UP
ATM11/0/1.7  7     18     PVC     ATM13/0/0    0     183   PNNI   UP
ATM11/0/1.7  7     100    PVC     ATM10/1/0    0     100          UP

5500-asp-e# show atm interface resource atm11/0/1.7

Resource Management configuration:
    Service Categories supported: vbr-nrt
    Link Distance: 0 kilometers
    Best effort connection limit: disabled  0 max connections
    Max traffic parameters by service (rate in Kbps, tolerance in cell-times):
        Peak-cell-rate RX: none vbr,
        Peak-cell-rate TX: none vbr,
        Sustained-cell-rate: none vbr RX, none vbr TX
        Minimum-cell-rate RX:
        Minimum-cell-rate TX:
        CDVT RX: none vbr,
        CDVT TX: none vbr,
        MBS: none vbr RX, none vbr TX
Resource Management state:
    Available bit rates (in Kbps):
        0 cbr RX, 0 cbr TX, 613 vbr RX, 613 vbr TX,
        0 abr RX, 0 abr TX, 0 ubr RX, 0 ubr TX
    Allocated bit rates:
        0 cbr RX, 0 cbr TX, 9114 vbr RX, 9114 vbr TX,
        0 abr RX, 0 abr TX, 0 ubr RX, 0 ubr TX

5500-asp-e# show atm interface resource atm11/0/1

Resource Management configuration:
    Service Classes:
        Service Category map: c1 cbr, c2 vbr-rt, c3 vbr-nrt, c4 abr, c5 ubr
        Scheduling: RS c1 WRR c2, WRR c3, WRR c4, WRR c5
        WRR Weight: 8 c2, 1 c3, 1 c4, 1 c5
    Pacing: disabled   0 Kbps rate configured, 0 Kbps rate installed
    Service Categories supported: cbr,vbr-rt,vbr-nrt,abr,ubr
    Link Distance: 0 kilometers
    Controlled Link sharing:
        Max aggregate guaranteed services: none RX,  none TX
        Max bandwidth: none cbr RX, none cbr TX, none vbr RX, none vbr TX,
                       none abr RX, none abr TX, none ubr RX, none ubr TX
        Min bandwidth: none cbr RX, none cbr TX, none vbr RX, none vbr TX,
                       none abr RX, none abr TX, none ubr RX, none ubr TX
    Best effort connection limit: disabled  0 max connections
    Max traffic parameters by service (rate in Kbps, tolerance in cell-times):
        Peak-cell-rate RX: none cbr, none vbr, none abr, none ubr
        Peak-cell-rate TX: none cbr, none vbr, none abr, none ubr
        Sustained-cell-rate: none vbr RX, none vbr TX
        Minimum-cell-rate RX: none abr, none ubr
        Minimum-cell-rate TX: none abr, none ubr
        CDVT RX: none cbr, none vbr, none abr, none ubr
        CDVT TX: none cbr, none vbr, none abr, none ubr
        MBS: none vbr RX, none vbr TX

Resource Management state:
    Available bit rates (in Kbps):
        117023 cbr RX, 117023 cbr TX, 117023 vbr RX, 117023 vbr TX,
        117023 abr RX, 117023 abr TX, 117023 ubr RX, 117023 ubr TX
    Allocated bit rates:
        30720 cbr RX, 30720 cbr TX, 0 vbr RX, 0 vbr TX,
        0 abr RX, 0 abr TX, 0 ubr RX, 0 ubr TX
    Best effort connections: 0 pvcs,  4 svcs

5500-asp-f配置示例

交换机为VP交换配置。

5500-asp-f
5500-asp-f# show running-config

Building configuration...
Current configuration:
!
version 11.3
no service padservice timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname 5500-asp-f
!
!
!
atm connection-traffic-table-row index 63997 vbr-nrt pcr 20480 scr10 9000  mbs 100
atm connection-traffic-table-row index 64000 cbr pcr 10240  cdvt 500
atm address 47.0091.8100.0000.0050.5308.2401.0050.5308.2401.00
atm router pnni
 no aesa embedded-number left-justified
 node 1 level 56 lowest
  redistribute atm-static
!
!
!
interface ATM11/0/0
 no ip address
!
interface ATM11/0/1
 no ip address
 atm pvp 5  interface  ATM11/0/0 10
 atm pvp 6 rx-cttr 64000 tx-cttr 64000 interface ATM11/0/0 6 rx-cttr 64000 tx-cttr 64000
 atm pvp 7 rx-cttr 63997 tx-cttr 63997 interface ATM11/0/0 7 rx-cttr 63997 tx-cttr 63997
!
interface ATM13/0/0
 no ip address
 atm maxvp-number 0
!
interface Ethernet13/0/0
 no ip address
!
ip classless
!
!
line con 0
line aux 0
line vty 0 4
 login
!
end

功能显示

要验证VP是可操作的,请发出show atm vp命令

5500-asp-f# show atm vp

Interface    VPI    Type  X-Interface     X-VPI     Status
ATM11/0/0    6       PVP     ATM11/0/1    6         UP
ATM11/0/0    7       PVP     ATM11/0/1    7         UP
ATM11/0/0    10      PVP     ATM11/0/1    5         UP
ATM11/0/1    5       PVP     ATM11/0/0    10        UP
ATM11/0/1    6       PVP     ATM11/0/0    6         UP
ATM11/0/1    7       PVP     ATM11/0/0    7         UP

8540-MSR配置示例

8540-MSR
8540-MSR# show running-config

Building configuration...
Current configuration:
!
version 12.0
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname 8540-MSR
!
logging buffered 4096 debugging
!
redundancy
 main-cpu
  sync config startup
  sync config running
facility-alarm core-temperature major 53
facility-alarm core-temperature minor 45
ip subnet-zero
!
atm connection-traffic-table-row index 63997 vbr-nrt pcr 20480 scr10 9000  mbs 100
atm connection-traffic-table-row index 63998 cbr pcr 10000
atm connection-traffic-table-row index 63999 cbr pcr 10240  cdvt 500
atm lecs-address-default 47.0091.8100.0000.0090.2144.8401.0090.2144.8405.00 1
atm address 47.0091.8100.0000.0090.2144.8401.0090.2144.8401.00
atm router pnni
 no aesa embedded-number left-justified
 node 1 level 56 lowest
  redistribute atm-static
!
!
lane database PVP
  name test server-atm-address 47.009181000000009021448401.009021448403.01
!
!
interface CBR1/0/0
 no ip address
 no ip directed-broadcast
 shutdown
 ces circuit 0 circuit-name test
 ces pvc 0 interface ATM2/1/0.6 vpi 6 vci 100
!
interface ATM2/1/0
 no atm signaling enable
 no ip address
 no ip directed-broadcast
 atm pvp 6 shaped rx-cttr 63999 tx-cttr 63999
 atm pvp 7 shaped rx-cttr 63999 tx-cttr 63999
 atm pvp 10 shaped rx-cttr 63999 tx-cttr 63999
!
interface ATM2/1/0.6 point-to-point
 no ip directed-broadcast
!
interface ATM2/1/0.7 point-to-point
 no ip directed-broadcast
 atm cac service-category cbr deny
 atm cac service-category vbr-nrt permit
 atm pvc 7 100 rx-cttr 63997 tx-cttr 63997  interface  ATM1/1/0 0 100
!
interface ATM2/1/0.10 point-to-point
 no ip directed-broadcast
 atm cac service-category cbr deny
 atm cac service-category ubr permit
!
interface ATM2/1/1
 no ip address
 no ip directed-broadcast
!
interface ATM2/1/2
 no ip address
 no ip directed-broadcast
!
interface ATM2/1/3
 no ip address
 no ip directed-broadcast
!
interface ATM0
 no ip address
 no ip directed-broadcast
 atm maxvp-number 0
 lane config auto-config-atm-address
 lane config database PVP
!
interface ATM0.1 multipoint
 ip address 100.100.100.1 255.255.255.0
 no ip directed-broadcast
 lane server-bus ethernet test
 lane client ethernet test
!
interface Ethernet0
 no ip address
 no ip directed-broadcast
!
ip classless
!
!
line con 0
transport input none
line aux 0
line vty 0 4
!
end

功能显示

您能使用显示in命令此部分验证在设备的配置功能。

8540-MSR# show atm interface resource atm2/1/0.7

Resource Management configuration:
    Service Categories supported: vbr-nrt
    Link Distance: 0 kilometers
    Best effort connection limit: disabled  0 max connections
    Max traffic parameters by service (rate in Kbps, tolerance in cell-times):
        Peak-cell-rate RX: none vbr,
        Peak-cell-rate TX: none vbr,
        Sustained-cell-rate: none vbr RX, none vbr TX
        Minimum-cell-rate RX:
        Minimum-cell-rate TX:
        CDVT RX: none vbr,
        CDVT TX: none vbr,
        MBS: none vbr RX, none vbr TX
Resource Management state:
    Available bit rates (in Kbps):
        0 cbr RX, 0 cbr TX, 613 vbr RX, 613 vbr TX,
        0 abr RX, 0 abr TX, 0 ubr RX, 0 ubr TX
    Allocated bit rates:
        0 cbr RX, 0 cbr TX, 9114 vbr RX, 9114 vbr TX,
        0 abr RX, 0 abr TX, 0 ubr RX, 0 ubr TX

8540-MSR# show atm interface resource atm2/1/0

Resource Management configuration:
    Service Classes:
        Service Category map: c2 cbr, c2 vbr-rt, c3 vbr-nrt, c4 abr, c5 ubr
        Scheduling: RS c1 WRR c2, WRR c3, WRR c4, WRR c5
        WRR Weight: 8 c2, 1 c3, 1 c4, 1 c5
    Pacing: disabled   0 Kbps rate configured, 0 Kbps rate installed
    Service Categories supported: cbr,vbr-rt,vbr-nrt,abr,ubr
    Link Distance: 0 kilometers
    Controlled Link sharing:
        Max aggregate guaranteed services: none RX,  none TX
        Max bandwidth: none cbr RX, none cbr TX, none vbr RX, none vbr TX,
                       none abr RX, none abr TX, none ubr RX, none ubr TX
        Min bandwidth: none cbr RX, none cbr TX, none vbr RX, none vbr TX,
                       none abr RX, none abr TX, none ubr RX, none ubr TX
    Best effort connection limit: disabled  0 max connections
    Max traffic parameters by service (rate in Kbps, tolerance in cell-times):
        Peak-cell-rate RX: none cbr, none vbr, none abr, none ubr
        Peak-cell-rate TX: none cbr, none vbr, none abr, none ubr
        Sustained-cell-rate: none vbr RX, none vbr TX
        Minimum-cell-rate RX: none abr, none ubr
        Minimum-cell-rate TX: none abr, none ubr
        CDVT RX: none cbr, none vbr, none abr, none ubr
        CDVT TX: none cbr, none vbr, none abr, none ubr
        MBS: none vbr RX, none vbr TX

Resource Management state:
    Available bit rates (in Kbps):
        117023 cbr RX, 117023 cbr TX, 117023 vbr RX, 117023 vbr TX,
        117023 abr RX, 117023 abr TX, 117023 ubr RX, 117023 ubr TX
    Allocated bit rates:
        30720 cbr RX, 30720 cbr TX, 0 vbr RX, 0 vbr TX,
        0 abr RX, 0 abr TX, 0 ubr RX, 0 ubr TX
    Best effort connections: 0 pvcs,  0 svcs

8540-MSR# show atm interface resource atm2/1/0.6

Resource Management configuration:
    Service Categories supported: cbr
    Link Distance: 0 kilometers
    Best effort connection limit: disabled  0 max connections
    Max traffic parameters by service (rate in Kbps, tolerance in cell-times):
        Peak-cell-rate RX: none cbr,
        Peak-cell-rate TX: none cbr,
        Minimum-cell-rate RX:
        Minimum-cell-rate TX:
        CDVT RX: none cbr,
        CDVT TX: none cbr,

Resource Management state:
    Available bit rates (in Kbps):
        9727 cbr RX, 9727 cbr TX, 0 vbr RX, 0 vbr TX,
        0 abr RX, 0 abr TX, 0 ubr RX, 0 ubr TX
    Allocated bit rates:
        1741 cbr RX, 1741 cbr TX, 0 vbr RX, 0 vbr TX,
        0 abr RX, 0 abr TX, 0 ubr RX, 0 ubr TX

8540-MSR# show atm interface resource atm2/1/0.7

Resource Management configuration:
    Service Categories supported: vbr-nrt
    Link Distance: 0 kilometers
    Best effort connection limit: disabled  0 max connections
    Max traffic parameters by service (rate in Kbps, tolerance in cell-times):
        Peak-cell-rate RX: none vbr,
        Peak-cell-rate TX: none vbr,
        Sustained-cell-rate: none vbr RX, none vbr TX
        Minimum-cell-rate RX:
        Minimum-cell-rate TX:
        CDVT RX: none vbr,
        CDVT TX: none vbr,
        MBS: none vbr RX, none vbr TX

Resource Management state:
    Available bit rates (in Kbps):
        0 cbr RX, 0 cbr TX, 613 vbr RX, 613 vbr TX,
        0 abr RX, 0 abr TX, 0 ubr RX, 0 ubr TX
    Allocated bit rates:
        0 cbr RX, 0 cbr TX, 9114 vbr RX, 9114 vbr TX,
        0 abr RX, 0 abr TX, 0 ubr RX, 0 ubr TX

8540-MSR# show atm interface resource atm2/1/0.10

Resource Management configuration:
    Service Categories supported: ubr
    Link Distance: 0 kilometers
    Best effort connection limit: disabled  0 max connections
    Max traffic parameters by service (rate in Kbps, tolerance in cell-times):
        Peak-cell-rate RX: none ubr
        Peak-cell-rate TX: none ubr
        Minimum-cell-rate RX: none ubr
        Minimum-cell-rate TX: none ubr
        CDVT RX: none ubr
        CDVT TX: none ubr

Resource Management state:
    Available bit rates (in Kbps):
        0 cbr RX, 0 cbr TX, 0 vbr RX, 0 vbr TX,
        0 abr RX, 0 abr TX, 0 ubr RX, 0 ubr TX
    Allocated bit rates:
        0 cbr RX, 0 cbr TX, 0 vbr RX, 0 vbr TX,
        0 abr RX, 0 abr TX, 0 ubr RX, 0 ubr TX

故障排除

目前没有针对此配置的故障排除信息。

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相关信息

单击发现5500 aspe交换机配置。 单击发现5500-asp-f交换机配置。 单击发现8540-MSR交换机配置。


Document ID: 10493