异步传输模式 (ATM) : LAN 仿真 (LANE)

FSSRP 示例配置

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

要改进ATM LAN仿真(LANE)简单服务器复制协议(SSRP),思科介绍ATM LANE快速简单服务器冗余协议(FSSRP)。FSSRP与LANE SSRP有所不同仿真LAN (ELAN)的所有已配置的LANE服务器总是活跃的。支持FSSRP的LANE客户端有虚拟电路(VC)一次设立对最大数量四车道的服务器和广播及未知服务器(BUS)。如果一个单行道服务器(LES)断开, LANE客户端迅速转换到下个LES和BUS,造成没有数据或LANE地址解析协议(LE_ARP)条目损耗和没有额外的信令。欲了解更详细的信息参考文档

注意: 在本文显示的多种服务的位置也许不是最佳的。在实现在真实网络的这样一配置前,请查看LANE设计推荐

先决条件

要求

本文档没有任何特定的要求。

使用的组件

所有硬件组件(LAN仿真客户端[LEC], LES, BUS, LANE配置服务器[LECS])可以是有能力的FSSRP。如果没有使用支持FSSRP的组件都,您不能受益于FSSRP功能。

下面FSSRP的支持的软件版本:

  • Cisco IOS�软件版本12.0(5)T和以上

  • Catalyst LANE模块版本12.0和以上

  • Cisco LightStream1010版本12.0(4a)W5(11a)和以上

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

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

本文档使用以下网络设置:

/image/gif/paws/10443/fssrpconfig1.gif

配置

您在ATM端口里(执行FSSRP的端口的)接口配置必须配置通道fssrp

Catalyst 5500 LANE 模块(仅限 LEC)

下面当前配置:

5500
!
      hostname ATM
      !
      interface Ethernet0
      !      interface ATM0
       atm preferred phy A
       atm pvc 1 0 5 qsaal
       atm pvc 2 0 16 ilmi
       no atm ilmi-keepalive
       lane fssrp
      !
      interface ATM0.1 multipoint
       lane client ethernet 1 admin
      !
      end

7200(主 LES/BUS + LEC)

下面当前配置:

7200
version 12.1
     !
     interface ATM4/0
      no ip address
      no ip route-cache cef
      atm pvc 1 0 5 qsaal
      atm pvc 2 0 16 ilmi
      no atm ilmi-keepalive
      lane fssrp
     !
     interface ATM4/0.2 multipoint
      lane server-bus ethernet admin elan-id 1
     !
     interface ATM4/0.3 multipoint
      lane client ethernet admin
     !
     end

LS1010(LECS 、LEC 和备份 LES/BUS)

下面当前配置:

LS1010
version 12.0
    !
    hostname Casimir
    !
    !
    atm lecs-address-default
    47.0091.8100.0000.0060.3e5a.4501.0060.3e5a.4505.00 1
    atm address 47.0091.8100.0000.0060.3e5a.4501.0060.3e5a.4501.00
    atm router pnni
     no aesa embedded-number left-justified
     node 1 level 56 lowest
      redistribute atm-static
    !
    !
    lane database FSSRPConfig
      name admin server-atm-address 47.00918100000000603E5A4501.0030199AB871.02
      name admin server-atm-address 47.00918100000000603E5A4501.00603E5A4503.02
      name admin elan-id 1
    !
    !
    interface ATM2/0/0
     no ip address
     no ip directed-broadcast
     atm maxvp-number 0
     lane config auto-config-atm-address
     lane config database FSSRPConfig
     lane fssrp
    !
    interface ATM2/0/0.1 multipoint
     no ip directed-broadcast
     lane client ethernet admin
    !
    interface ATM2/0/0.2 multipoint
     no ip directed-broadcast
     lane server-bus ethernet admin elan-id 1
    !
     end

验证

本部分所提供的信息可用于确认您的配置是否正常工作。

LAN 仿真客户端

您能验证LEC运行FSSRP和发现更多关于提供服务的LES/BUS对为ELAN通过发出show lane client detail命令

如下所示,所有LEC加入激活和备份LES。所以,在故障的情况下活动LES的失败,新连接不需要设置。

ATM# show lane client detail
      LE Client ATM0.1  ELAN name: admin  Admin: up  State: operational
      Client ID: 2                 LEC up for 33 minutes 20 seconds
      ELAN ID: 1      Join Attempt: 16
      This LEC is running in Fast SSRP mode
      Known LE Servers: 2 <-- LEC aware of both LESes
      Last Fail Reason: Link went down
      HW Address: 00e0.1410.d830   Type: ethernet         Max Frame Size: 1516 ANID: 1
      ATM Address: 47.00918100000000603E5A4501.00E01410D830.01
       VCD  rxFrames  txFrames  Type       ATM Address
         0         0         0  configure  47.00918100000000603E5A4501.00603E5A4505
                                           LEC ID: 2, State: LESBUS_ACTIVE
        44         1      1003  direct     47.00918100000000603E5A4501.00603E5A4503.02
        46      1035         0  distribute 47.00918100000000603E5A4501.00603E5A4503.02
        48         0      1057  send       47.00918100000000603E5A4501.00603E5A4504.02
        50        99         0  forward    47.00918100000000603E5A4501.00603E5A4504.02
                        LEC ID: 3, State: LESBUS_ACTIVE  <-- LEC joined the Backup LES
        45         1         2  direct     47.00918100000000603E5A4501.0030199AB871.02
        47        34         0  distribute 47.00918100000000603E5A4501.0030199AB871.02
        49         0         0  send       47.00918100000000603E5A4501.0030199AB872.02
        51         0         0  forward    47.00918100000000603E5A4501.0030199AB872.02
      Ischia# show lane client detail
      LE Client ATM4/0.3  ELAN name: admin  Admin: up  State: operational
      Client ID: 3
      LEC up for 34 minutes 13 seconds
      ELAN ID: 1
      Join Attempt: 7
      This LEC is running in Fast SSRP mode
     Known LE Servers: 2 <-- LEC aware of both LESes
      Last Fail Reason: Locally deactivate
      HW Address: 0030.199a.b870   Type: ethernet             Max Frame Size: 1516
      ATM Address: 47.00918100000000603E5A4501.0030199AB870.03
       VCD  rxFrames  txFrames  Type       ATM Address
         0         0         0  configure  47.00918100000000603E5A4501.00603E5A4505.00
                                           LEC ID: 3, State: LESBUS_ACTIVE
        66         1         2  direct     47.00918100000000603E5A4501.00603E5A4503.02
        67      1059         0  distribute 47.00918100000000603E5A4501.00603E5A4503.02
        68         0        74  send       47.00918100000000603E5A4501.00603E5A4504.02
        69      1186         0  forward    47.00918100000000603E5A4501.00603E5A4504.02
                         LEC ID: 2, State: LESBUS_ACTIVE <-- LEC joined the Backup LES
        70         1         2  direct     47.00918100000000603E5A4501.0030199AB871.02
        74        36         0  distribute 47.00918100000000603E5A4501.0030199AB871.02
        76         0         0  send       47.00918100000000603E5A4501.0030199AB872.02
        79         0         0  forward    47.00918100000000603E5A4501.0030199AB872.02
      Casimir# show lane client detail
      LE Client ATM2/0/0.1  ELAN name: admin  Admin: up  State: operational
      Client ID: 1                 LEC up for 36 minutes 16 seconds
      ELAN ID: 1      Join Attempt: 2
      This LEC is running in Fast SSRP mode
      Known LE Servers: 2 <-- LEC aware of both LESes
      Last Fail Reason: Local config change
      HW Address: 0060.3e5a.4502   Type: ethernet             Max Frame Size: 1516
      ATM Address: 47.00918100000000603E5A4501.00603E5A4502.01
       VCD  rxFrames  txFrames  Type       ATM Address
         0         0         0  configure  47.00918100000000603E5A4501.00603E5A4505.00
                                           LEC ID: 1, State: LESBUS_ACTIVE
       143         1         2  direct     47.00918100000000603E5A4501.00603E5A4503.02
       146      1120         0  distribute 47.00918100000000603E5A4501.00603E5A4503.02
       147         0        38  send       47.00918100000000603E5A4501.00603E5A4504.02
       150      1228         0  forward    47.00918100000000603E5A4501.00603E5A4504.02
                         LEC ID: 1, State: LESBUS_ACTIVE <-- LEC joined the Backup LES
      177         1         2  direct     47.00918100000000603E5A4501.0030199AB871.02
      178        37         0  distribute 47.00918100000000603E5A4501.0030199AB871.02
      179         0         0  send       47.00918100000000603E5A4501.0030199AB872.02
      180         0         0  forward    47.00918100000000603E5A4501.0030199AB872.02

LAN 仿真服务器

您能发出show lane server命令验证LES的状态。如下所示,在7200平台的LES在备用模式运行,并且在LS1010的LES是活跃的。激活和备份有对所有三个客户端的一连接。

Ischia# show lane server
 LE Server ATM4/0.2, Elan name: admin, Admin: up, State: operational
 This LES is running in Fast SSRP mode
 Master/Backup: Backup, Type: ethernet, Max Frame Size: 1516
 locally set elan-id: 1
 elan-id obtained from LECS: 1
 ATM address: 47.00918100000000603E5A4501.0030199AB871.02
 LECS used: 47.00918100000000603E5A4501.00603E5A4505.00 connected, vcd 65, fssrp
 control distribute: vcd 73, 3 members, 38 packets <-- LEC joined the LES while in Backup state
 proxy/ (ST: Init, Conn, Waiting, Adding, Joined, Operational, Reject, Term)
 lecid ST vcd    pkts Hardware Addr  ATM Address
    1P O   71       2 0060.3e5a.4502 47.00918100000000603E5A4501.00603E5A4502.01
    2P O   72       2 0030.199a.b870 47.00918100000000603E5A4501.0030199AB870.03
    3P O   80       2 00e0.1410.d830 47.00918100000000603E5A4501.00E01410D830.01

LAN 仿真配置服务器

LCES状态可以通过发出show lane config命令显示。如下所示, LECS跟踪LES和备份LES/BUS,与LES作为活动一个。

Casimir# show lane config
 Config table: FSSRPConfig
 Admin: up State: operational
 This LECS is running in Fast SSRP mode
 LECS Mastership State: active master
 list of global LECS addresses (23 seconds to update):
 47.00918100000000603E5A4501.00603E5A4505.00  &alt------- me
 ATM Address of this LECS: 47.00918100000000603E5A4501.00603E5A4505.00 (auto)
 vcd  rxCnt  txCnt  callingParty
 138      1     47  47.00918100000000603E5A4501.00603E5A4503.02 LES admin 1 active, fssrp
 174      1     46  47.00918100000000603E5A4501.0030199AB871.02 LES admin 0 backup, fssrp
 cumulative total number of unrecognized packets received so far: 0
 cumulative total number of config requests received so far: 26
 cumulative total number of config failures so far: 3
     cause of last failure: no configuration
     culprit for the last failure: 47.00918100000000603E5A4501.0030199AB870.03
 With the command show lane config you can verify the Database indeed is being bound
 to the LECS.
 Casimir# show lane database FSSRPConfig
  LANE Config Server database table 'FSSRPConfig' bound to interface/s: ATM2/0/0
 no default elan
 elan 'admin': un-restricted, elan-id 1
   server 47.00918100000000603E5A4501.0030199AB871.02 (prio 0)
   server 47.00918100000000603E5A4501.00603E5A4503.02 (prio 1)

结论

当FSSRP启用在LAN网云的所有组件, LEC能加入备份LES/BUS。这在故障的情况下主要LAN仿真服务器/总线的一失败减少切换时间。

show 与 debug 命令

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。

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相关信息


Document ID: 10443