需要帮助来复制有关路由器上的帧中继配置的教程的结果。我需要更改/添加什么？

网络工程 思科 路由器 GNSS3 帧中继
2021-08-01 14:17:54

我无法在此处获取 03:14 显示的输出：Kevin Wallace 的帧中继配置

帧中继交换机配置

我的网络是 3 个路由器，每个路由器都通过 Serial2/0 接口连接到帧中继交换机，没有别的。我正在尝试制作一个以 R1 作为集线器，R2 和 R3 作为辐条的轴辐式拓扑。使用的帧中继交换机是 GNS3 中默认的帧中继交换机应用程序。

更新：原来的问题解决了。需要帮助第二个：

最初的问题是由于帧中继交换机配置错误造成的。但是，每个路由器上的帧中继 LMI 已更改为 ANSI，以匹配帧中继。为什么帧中继 LMI 类型仍然错误？即，为什么是它CISCO而不是ANSI？

我的 3 个路由器的配置如下：

R1#sh run | s Serial2/0
interface Serial2/0
 description Conn to FR
 ip address 10.1.1.1 255.255.255.0
 encapsulation frame-relay
 serial restart-delay 0
 frame-relay lmi-type ansi

R2(config)#do sh run | s Serial2/0
interface Serial2/0
 description Conn to R1
 ip address 10.1.1.2 255.255.255.0
 encapsulation frame-relay
 serial restart-delay 0
 frame-relay lmi-type ansi

R3#sh run | s Serial2/0
interface Serial2/0
 description Conn to R1
 ip address 10.1.1.3 255.255.255.0
 encapsulation frame-relay
 serial restart-delay 0
 frame-relay lmi-type ansi

据我所知，我配置路由器的方式与 Kevin 完全相同。但是，当我使用show frame-relay pvc命令或show frame-relay map命令时，我只获得有关第一个 PVC/映射的信息：

R1#sh frame pvc

PVC Statistics for interface Serial2/0 (Frame Relay DTE)

              Active     Inactive      Deleted       Static
  Local          1            0            0            0
  Switched       0            0            0            0
  Unused         0            0            0            0

DLCI = 102, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial2/0

  input pkts 1             output pkts 1            in bytes 34        
  out bytes 34             dropped pkts 0           in pkts dropped 0         
  out pkts dropped 0                out bytes dropped 0         
  in FECN pkts 0           in BECN pkts 0           out FECN pkts 0         
  out BECN pkts 0          in DE pkts 0             out DE pkts 0         
  out bcast pkts 1         out bcast bytes 34        
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
  pvc create time 00:51:48, last time pvc status changed 00:51:48

R2#sh frame pvc     

PVC Statistics for interface Serial2/0 (Frame Relay DTE)

              Active     Inactive      Deleted       Static
  Local          2            0            0            0
  Switched       0            0            0            0
  Unused         0            0            0            0

DLCI = 103, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial2/0

  input pkts 5             output pkts 5            in bytes 170       
  out bytes 170            dropped pkts 0           in pkts dropped 0         
  out pkts dropped 0                out bytes dropped 0         
  in FECN pkts 0           in BECN pkts 0           out FECN pkts 0         
  out BECN pkts 0          in DE pkts 0             out DE pkts 0         
  out bcast pkts 5         out bcast bytes 170       
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
  pvc create time 00:52:39, last time pvc status changed 00:52:39

DLCI = 201, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial2/0

  input pkts 11            output pkts 10           in bytes 724       
  out bytes 690            dropped pkts 0           in pkts dropped 0         
  out pkts dropped 0                out bytes dropped 0         
  in FECN pkts 0           in BECN pkts 0           out FECN pkts 0         
  out BECN pkts 0          in DE pkts 0             out DE pkts 0         
  out bcast pkts 5         out bcast bytes 170       
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
  pvc create time 00:52:39, last time pvc status changed 00:52:39

R3#sh frame pvc

PVC Statistics for interface Serial2/0 (Frame Relay DTE)

              Active     Inactive      Deleted       Static
  Local          1            0            0            0
  Switched       0            0            0            0
  Unused         0            0            0            0

DLCI = 301, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial2/0

  input pkts 5             output pkts 2            in bytes 170       
  out bytes 68             dropped pkts 0           in pkts dropped 0         
  out pkts dropped 0                out bytes dropped 0         
  in FECN pkts 0           in BECN pkts 0           out FECN pkts 0         
  out BECN pkts 0          in DE pkts 0             out DE pkts 0         
  out bcast pkts 2         out bcast bytes 68        
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
  pvc create time 00:52:18, last time pvc status changed 00:52:18

在教程的输出中，R1 显示 PVC 102 和 103，R2 显示 201，R3 显示 301。

此外，在帧中继映射的情况下：

R1#sh frame map
Serial2/0 (up): ip 10.1.1.2 dlci 102(0x66,0x1860), dynamic,
              broadcast,
              CISCO, status defined, active

R2#sh frame map
Serial2/0 (up): ip 10.1.1.3 dlci 103(0x67,0x1870), dynamic,
              broadcast,
              CISCO, status defined, active
Serial2/0 (up): ip 10.1.1.1 dlci 201(0xC9,0x3090), dynamic,
              broadcast,
              CISCO, status defined, active

R3#sh frame map
Serial2/0 (up): ip 10.1.1.2 dlci 301(0x12D,0x48D0), dynamic,
              broadcast,, status defined, active

为什么结果之间存在差异？我是帧中继的新手，因此不知道我应该做什么。基本上，我在做什么与教程不同？

配置转储

R1： 

R1#sh run
Building configuration...

Current configuration : 2055 bytes
!
! Last configuration change at 10:50:17 UTC Mon Dec 24 2018
!
version 15.5
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
!
!
bsd-client server url https://cloudsso.cisco.com/as/token.oauth2
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
!
!
!
!
!
no ip icmp rate-limit unreachable
!
!
!
!         
!
!
!
!


!
!
!
!
no ip domain lookup
ip cef
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
cts logging verbose
!
!
!
redundancy
!
!
ip tcp synwait-time 5
! 
!
!
!
!         
!
!
!
!
!
!
!
!
interface Ethernet0/0
 no ip address
 shutdown
!
interface Ethernet0/1
 no ip address
 shutdown
!
interface Ethernet0/2
 no ip address
 shutdown
!
interface Ethernet0/3
 no ip address
 shutdown
!
interface Ethernet1/0
 no ip address
 shutdown
!
interface Ethernet1/1
 no ip address
 shutdown
!
interface Ethernet1/2
 no ip address
 shutdown 
!
interface Ethernet1/3
 no ip address
 shutdown
!
interface Serial2/0
 description Conn to FR
 ip address 10.1.1.1 255.255.255.0
 encapsulation frame-relay
 serial restart-delay 0
 frame-relay lmi-type ansi
!
interface Serial2/1
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial2/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial2/3
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial3/0
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial3/1
 no ip address
 shutdown 
 serial restart-delay 0
!
interface Serial3/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial3/3
 no ip address
 shutdown
 serial restart-delay 0
!
router ospf 1
 network 10.0.0.0 0.0.0.255 area 0
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
line con 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
line aux 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
line vty 0 4
 login
 transport input none
!
!
end

R2： 

R2#sh run
Building configuration...

Current configuration : 2055 bytes
!
! Last configuration change at 10:59:24 UTC Mon Dec 24 2018
!
version 15.5
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R2
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
!
!
bsd-client server url https://cloudsso.cisco.com/as/token.oauth2
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
!
!
!
!
!
no ip icmp rate-limit unreachable
!
!
!
!         
!
!
!
!


!
!
!
!
no ip domain lookup
ip cef
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
cts logging verbose
!
!
!
redundancy
!
!
ip tcp synwait-time 5
! 
!
!
!
!         
!
!
!
!
!
!
!
!
interface Ethernet0/0
 no ip address
 shutdown
!
interface Ethernet0/1
 no ip address
 shutdown
!
interface Ethernet0/2
 no ip address
 shutdown
!
interface Ethernet0/3
 no ip address
 shutdown
!
interface Ethernet1/0
 no ip address
 shutdown
!
interface Ethernet1/1
 no ip address
 shutdown
!
interface Ethernet1/2
 no ip address
 shutdown 
!
interface Ethernet1/3
 no ip address
 shutdown
!
interface Serial2/0
 description Conn to R1
 ip address 10.1.1.2 255.255.255.0
 encapsulation frame-relay
 serial restart-delay 0
 frame-relay lmi-type ansi
!
interface Serial2/1
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial2/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial2/3
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial3/0
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial3/1
 no ip address
 shutdown 
 serial restart-delay 0
!
interface Serial3/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial3/3
 no ip address
 shutdown
 serial restart-delay 0
!
router ospf 1
 network 10.0.0.0 0.0.0.255 area 0
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
line con 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
line aux 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
line vty 0 4
 login
 transport input none
!
!
end

R3： 

R3#sh run
Building configuration...

Current configuration : 2055 bytes
!
! Last configuration change at 10:28:04 UTC Mon Dec 24 2018
!
version 15.5
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R3
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
!
!
bsd-client server url https://cloudsso.cisco.com/as/token.oauth2
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
!
!
!
!
!
no ip icmp rate-limit unreachable
!
!
!
!         
!
!
!
!


!
!
!
!
no ip domain lookup
ip cef
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
cts logging verbose
!
!
!
redundancy
!
!
ip tcp synwait-time 5
! 
!
!
!
!         
!
!
!
!
!
!
!
!
interface Ethernet0/0
 no ip address
 shutdown
!
interface Ethernet0/1
 no ip address
 shutdown
!
interface Ethernet0/2
 no ip address
 shutdown
!
interface Ethernet0/3
 no ip address
 shutdown
!
interface Ethernet1/0
 no ip address
 shutdown
!
interface Ethernet1/1
 no ip address
 shutdown
!
interface Ethernet1/2
 no ip address
 shutdown 
!
interface Ethernet1/3
 no ip address
 shutdown
!
interface Serial2/0
 description Conn to R1
 ip address 10.1.1.3 255.255.255.0
 encapsulation frame-relay
 serial restart-delay 0
 frame-relay lmi-type ansi
!
interface Serial2/1
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial2/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial2/3
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial3/0
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial3/1
 no ip address
 shutdown 
 serial restart-delay 0
!
interface Serial3/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial3/3
 no ip address
 shutdown
 serial restart-delay 0
!
router ospf 1
 network 10.0.0.0 0.0.0.255 area 0
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
line con 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
line aux 0
 exec-timeout 0 0
 privilege level 15
 logging synchronous
line vty 0 4
 login
 transport input none
!
!
end

PS每个路由器都是运行在 GNS3 中的 IOU L3 设备I86BI_LINUX-ADVENTERPRISEK9-M), Version 15.5(2)T

1个回答

帧中继 LMI 位于您的路由器和帧中继交换机之间的链路的本地。显然，您的帧中继交换机配置为frame-relay lmi-type cisco.

Cisco 支持三种不同的帧中继本地管理接口 (LMI) 类型：Cisco、ANSI Annex D 和 Q933-A Annex A。从 Cisco IOS 软件版本 11.2 开始，LMI 自动检测功能允许帧中继接口自动检测 LMI 类型由直接连接的帧中继交换机支持。根据从帧中继交换机接收到的 LMI 状态消息，路由器会自动使用帧中继交换机确认的支持的 LMI 类型配置其帧中继接口。

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