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标题: 【MPLS TE】跨area MPLS TE（OSPF） [查看完整版帖子] [打印本页]

时间: 2017-4-25 01:12

作者: tau 标题: 【MPLS TE】跨area MPLS TE（OSPF）

1.实验环境

设备互联网段为10.1.xy.0/24，其中xy为设备编号，x小y大
所有设备的loopback0地址空间为x.x.x.x/32，x为设备编号
全网运行OSPF，宣告直连和loopback接口
R3为ABR，连接area0及area1
在R1上建立一个TE Tunnel，源为自身的loopback0，目的为R4的4.4.4.4

2.实验步骤

完成基本的IP配置（配置省略）
所有路由器运行OSPF
全局激活MPLS TE tunnel，并设定MPLS 标签空间
为每台路由器的OSPF激活MPLS TE的扩展，并且手工设置用于MPLS TE 的RouterID
每台路由器的接口都激活RSVP及MPLS TE tunnel的支持
在R1上完成MPLS TE的配置
测试数据流的传输过程，观察现象

3.配置命令

R2的配置如下（所有配置都省去了接口IP的配置）：
Ip cef
mpls traffic-eng tunnels
mpls label range 200 299
!
router ospf 1
  router-id 2.2.2.2
  network 10.1.12.2 0.0.0.0 area 0
  network 10.1.23.2 0.0.0.0 area 0
  mpls traffic-eng router-id loopback0
  mpls traffic-eng area 0
!
interface eth0 0/0
  mpls traffic-eng tunnels
  ip rsvp bandwidth
interface eth0 1/0
  mpls traffic-eng tunnels
  ip rsvp bandwidth
（原创博文，红茶三杯 http://weibo.com/vinsoney 版权所有，转载保留原作者信息及出处）
R3的配置如下（注意，area0和area1都要激活MPLS TE）：
Ip cef
mpls traffic-eng tunnels
mpls label range 300 399
!
router ospf 1
  router-id 3.3.3.3
  network 10.1.34.3 0.0.0.0 area 1
  network 10.1.23.2 0.0.0.0 area 0
  mpls traffic-eng router-id loopback0
  mpls traffic-eng area 0
  mpls traffic-eng area 1    !!注意area0和area1都要激活MPLS TE
!
interface eth0 0/0
  mpls traffic-eng tunnels
  ip rsvp bandwidth
interface eth0 1/0
  mpls traffic-eng tunnels
  ip rsvp bandwidth

R4的配置如下
Ip cef
mpls traffic-eng tunnels
mpls label range 400 499
!
router ospf 1
  router-id 4.4.4.4
  network 10.1.34.4 0.0.0.0 area 1
  network 10.1.45.4 0.0.0.0 area 1
  mpls traffic-eng router-id loopback0
  mpls traffic-eng area 1
!
interface eth0 0/0
  mpls traffic-eng tunnels
  ip rsvp bandwidth
interface eth0 1/0
  mpls traffic-eng tunnels
  ip rsvp bandwidth

R5的配置如下
Ip cef
mpls traffic-eng tunnels
mpls label range 500 599
!
router ospf 1
  router-id 5.5.5.5
  network 5.5.5.5 0.0.0.0 area 1
  network 10.1.45.5 0.0.0.0 area 1
  mpls traffic-eng router-id loopback0
  mpls traffic-eng area 1
!
interface eth0 0/0
  mpls traffic-eng tunnels
  ip rsvp bandwidth

接下去在R1上配置：
Ip explicit R1toR5
  next-address 10.1.12.2             !!本区域内直接用strict下一跳
  next-address 10.1.23.3
  next-address loose 10.1.34.4       !!跨区域的话必须用loose下一跳
  next-address loose 10.1.45.5       !!这条就可要可不要了，你懂的
!
interface Tunnel0
ip unnumbered Loopback0
tunnel destination 5.5.5.5
tunnel mode mpls traffic-eng
tunnel mpls traffic-eng autoroute announce
tunnel mpls traffic-eng priority 7 7
tunnel mpls traffic-eng bandwidth  50000
  tunnel mpls traffic-eng path-option 10 explicit name R1toR5
（原创博文，红茶三杯 http://weibo.com/vinsoney 版权所有，转载保留原作者信息及出处）

R1#show mpls traffic-eng tunnels
Name: R1_t0                            (Tunnel0) Destination: 5.5.5.5
  Status:
Admin: up       Oper: up    Path: valid    Signalling: connected
path option 10, type explicit test (Basis for Setup, path weight 20)

  Config Parameters:
Bandwidth: 0       kbps (Global)  Priority: 7  7 Affinity: 0x0/0xFFFF
Metric Type: TE (default)
AutoRoute:  disabled  LockDown: disabled  Loadshare: 0       bw-based
auto-bw: disabled
  Active Path Option Parameters:
State: explicit path option 10 is active
BandwidthOverride: disabled  LockDown: disabled  Verbatim: disabled

  InLabel  :  -
  OutLabel : Ethernet0/0, 201
  RSVP Signalling Info:
   Src 1.1.1.1, Dst 5.5.5.5, Tun_Id 0, Tun_Instance 9
RSVP Path Info:
   My Address: 10.1.12.1
   Explicit Route: 10.1.12.2 10.1.23.2 10.1.23.3 10.1.34.4*
                  10.1.45.5*
   Record Route:
   Tspec: ave rate=0 kbits, burst=1000 bytes, peak rate=0 kbits
RSVP Resv Info:
   Record Route:  10.1.23.2 10.1.34.3 10.1.45.4 10.1.45.5
   Fspec: ave rate=0 kbits, burst=1000 bytes, peak rate=0 kbits
  History:
Tunnel:
   Time since created: 11 minutes, 42 seconds
   Time since path change: 10 seconds
   Number of LSP IDs (Tun_Instances) used: 9
Current LSP:
   Uptime: 10 seconds
   Selection: reoptimization
Prior LSP:
   ID: path option 10 [8]
   Removal Trigger: configuration changed

（原创博文，红茶三杯 http://weibo.com/vinsoney 版权所有，转载保留原作者信息及出处）

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