MSR G2路由器MPLS L2VPN（公网隧道采用MPLS TE）典型配置

客户计划采用基于LDP方式的MPLS L2VPN连接两个分支站点，公网隧道要求采用MPLS TE技术实现；

 

 

如图所示，PE1与PE2之间链路采用MPLS TE建立动态隧道，之后PE1与PE2建立PW，实现CE1与CE2的二层互通；

PE1：

#

 sysname PE1                      

#

//创建OSPF进程1，并在相应区域中使能MPLS TE能力

ospf 1                                   

 area 0.0.0.0

  mpls te enable

#

//配置LSR-ID为loopback0地址

 mpls lsr-id 1.1.1.1

#

//使能MPLS LDP / MPLS TE / RSVP

mpls ldp

#

mpls te

#

rsvp

# 

//创建隧道测试te1 优先选择cr-lsp隧道，负载分担数为1  

tunnel-policy te1

 select-seq cr-lsp load-balance-number 1

#

//使能MPLS L2VPN

 l2vpn enable

#

//配置pw模板，配置pw封装类型为eth

pw-class test

 pw-type ethernet

#

//配置Loopback0并将其宣告到OSPF 1 area 0中

interface LoopBack0

 ip address 1.1.1.1 255.255.255.255

 ospf 1 area 0.0.0.0

#

interface GigabitEthernet0/0

 port link-mode route

 combo enable copper

#

//配置公网接口IP及路由

interface GigabitEthernet0/1

 port link-mode route

 combo enable copper

 ip address 10.0.0.1 255.255.255.252

 ospf 1 area 0.0.0.0

//使能MPLS及MPLS TE能力

 mpls enable

 mpls te enable

//配置用于转发MPLS TE 流量的链路最大带宽

 mpls te max-link-bandwidth 100000

//配置链路的最大可预留带宽

 mpls te max-reservable-bandwidth 100000

//开启接口的RSVP能力

 rsvp enable

#

//创建tunnel接口，隧道模式选择为mpls-te 目的地址为2.2.2.2  mpls te隧道所需的带宽

interface Tunnel0 mode mpls-te

 ip address unnumbered interface LoopBack0

 mpls te bandwidth ct0 1000

 destination 2.2.2.2

#

xconnect-group 1

 connection 1

//绑定AC接口

  ac interface GigabitEthernet0/0

//配置PW并绑定隧道策略

  peer 2.2.2.2 pw-id 12 pw-class test tunnel-policy te1

#

P：

ospf 1

 area 0.0.0.0

  mpls te enable

#

 mpls lsr-id 5.5.5.5

#

mpls te

#

rsvp

#

interface LoopBack0

 ip address 5.5.5.5 255.255.255.255

 ospf 1 area 0.0.0.0

#

interface GigabitEthernet0/0

 port link-mode route

 combo enable copper

 ip address 10.0.0.2 255.255.255.252

 ospf 1 area 0.0.0.0

 mpls enable

 mpls te enable

 mpls te max-link-bandwidth 100000

 mpls te max-reservable-bandwidth 100000

 rsvp enable

#             

interface GigabitEthernet0/1

 port link-mode route

 combo enable copper

 ip address 20.0.0.1 255.255.255.252

 ospf 1 area 0.0.0.0

 mpls enable

 mpls te enable

 mpls te max-link-bandwidth 100000

 mpls te max-reservable-bandwidth 100000

 rsvp enable

 

PE2：

sysname PE2

#

ospf 1

 area 0.0.0.0

  mpls te enable

#

 mpls lsr-id 2.2.2.2

#

mpls ldp

#

mpls te

#

rsvp

#              

tunnel-policy te1

 select-seq cr-lsp load-balance-number 1

#

 l2vpn enable

#

pw-class test

 pw-type ethernet

#

interface LoopBack0

 ip address 2.2.2.2 255.255.255.255

 ospf 1 area 0.0.0.0

#

interface GigabitEthernet0/0

 port link-mode route

 combo enable copper

 ip address 20.0.0.2 255.255.255.252

 ospf 1 area 0.0.0.0

 mpls enable

 mpls te enable

 mpls te max-link-bandwidth 100000

 mpls te max-reservable-bandwidth 100000

 rsvp enable

#

interface GigabitEthernet0/1

 port link-mode route

 combo enable copper

#

interface Tunnel0 mode mpls-te

 ip address unnumbered interface LoopBack0

 mpls te bandwidth ct0 1000

 destination 1.1.1.1

#

xconnect-group 1

 connection 1

  ac interface GigabitEthernet0/1

  peer 1.1.1.1 pw-id 12 pw-class test tunnel-policy te1

#

配置验证：

1.  查看MPLS TE tunnel接口状态为UP

[PE1]display interface Tunnel 0

Tunnel0

Current state: UP

Line protocol state: UP

Description: Tunnel0 Interface

Bandwidth: 64kbps

Maximum Transmit Unit: 1496

Internet Address is 1.1.1.1/32 Unnumbered

Tunnel source unknown, destination 2.2.2.2

Tunnel TTL 255

Tunnel protocol/transport CR_LSP

Output queue - Urgent queuing: Size/Length/Discards 0/100/0

Output queue - Protocol queuing: Size/Length/Discards 0/500/0

Output queue - FIFO queuing: Size/Length/Discards 0/75/0

Last clearing of counters: Never

Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Last 300 seconds output rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec

Input: 0 packets, 0 bytes, 0 drops

Output: 0 packets, 0 bytes, 0 drops

2.  查看MPLS TE 隧道接口信息

[PE1]display mpls te tun

Tunnel Name            : Tunnel 0

Tunnel State           : Up (Main CRLSP up, Shared-resource CRLSP down)

Tunnel Attributes      : 

  LSP ID               : 47137           Tunnel ID            : 0

  Admin State          : Normal        

  Ingress LSR ID       : 1.1.1.1         Egress LSR ID        : 2.2.2.2

  Signaling            : RSVP-TE         Static CRLSP Name    : -

  Resv Style           : SE

  Tunnel mode          : -

  Reverse-LSP name     : -

  Reverse-LSP LSR ID   : -               Reverse-LSP Tunnel ID: -

  Class Type           : CT0             Tunnel Bandwidth     : 1000 kbps

  Reserved Bandwidth   : 1000 kbps

  Setup Priority       : 7               Holding Priority     : 7

  Affinity Attr/Mask   : 0/0

  Explicit Path        : -

  Backup Explicit Path : -

  Metric Type          : TE

  Record Route         : Disabled        Record Label         : Disabled

  FRR Flag             : Disabled        Bandwidth Protection : Disabled

  Backup Bandwidth Flag: Disabled        Backup Bandwidth Type: -

  Backup Bandwidth     : -

  Bypass Tunnel        : No              Auto Created         : No

  Route Pinning        : Disabled

  Retry Limit          : 3               Retry Interval       : 2 sec

  Reoptimization       : Disabled        Reoptimization Freq  : -

  Backup Type          : None            Backup LSP ID        : -

  Auto Bandwidth       : Disabled        Auto Bandwidth Freq  : -

  Min Bandwidth        : -               Max Bandwidth        : -

  Collected Bandwidth  : -

3.  查看PW会话状态及转发信息

[PE1]display l2v pw verbose

Xconnect-group Name: 1

 Connection Name: 1

  Peer: 2.2.2.2          PW ID: 12

    Signaling Protocol  : LDP

    Link ID             : 1          PW State : Up

    In Label            : 917631     Out Label: 917631

    MTU                 : 1500

    PW Attributes       : Main

    VCCV CC             : -

    VCCV BFD            : -

    Tunnel Group ID     : 0x800000030000000

Tunnel NHLFE IDs    : 268435456

 

 [PE1]dis mpls forwarding nhlfe 268435456

Flags: T - Forwarded through a tunnel

       N - Forwarded through the outgoing interface to the nexthop IP address

       B - Backup forwarding information

       A - Active forwarding information

 

NID        Tnl-Type Flag OutLabel Forwarding Info

--------------------------------------------------------------------------------

268435456  TE       TA   -        1028

 

[PE1]display mpls lsp

FEC                         Proto    In/Out Label    Interface/Out NHLFE    

1.1.1.1/32                  LDP      3/-             -                      

1.1.1.1/0/47137             RSVP     -/1151          GE0/1                  

2.2.2.2/0/54684             RSVP     3/-             -                      

10.0.0.2                    Local    -/-             GE0/1                  

Tunnel0                     Local    -/-             NHLFE1028 

CE1与CE2互ping测试：

[CE1]ping 100.0.0.1

Ping 100.0.0.1 (100.0.0.1): 56 data bytes, press CTRL_C to break

56 bytes from 100.0.0.1: icmp_seq=0 ttl=255 time=3.000 ms

56 bytes from 100.0.0.1: icmp_seq=1 ttl=255 time=2.000 ms

56 bytes from 100.0.0.1: icmp_seq=2 ttl=255 time=2.000 ms

56 bytes from 100.0.0.1: icmp_seq=3 ttl=255 time=4.000 ms

56 bytes from 100.0.0.1: icmp_seq=4 ttl=255 time=2.000 ms

 

--- Ping statistics for 100.0.0.1 ---

5 packets transmitted, 5 packets received, 0.0% packet loss

round-trip min/avg/max/std-dev = 2.000/2.600/4.000/0.800 ms

[CE1]%Mar 16 07:05:18:447 2016 CE1 PING/6/PING_STATISTICS: Ping statistics for 100.0.0.1: 5 packets transmitted, 5 packets received, 0.0% packet loss, round-trip min/avg/max/std-dev = 2.000/2.600/4.000/0.800 ms.

 

[CE2]ping 100.0.0.2

Ping 100.0.0.2 (100.0.0.2): 56 data bytes, press CTRL_C to break

56 bytes from 100.0.0.2: icmp_seq=0 ttl=255 time=2.505 ms

56 bytes from 100.0.0.2: icmp_seq=1 ttl=255 time=2.243 ms

56 bytes from 100.0.0.2: icmp_seq=2 ttl=255 time=2.738 ms

56 bytes from 100.0.0.2: icmp_seq=3 ttl=255 time=2.520 ms

56 bytes from 100.0.0.2: icmp_seq=4 ttl=255 time=2.037 ms

 

--- Ping statistics for 100.0.0.2 ---

5 packets transmitted, 5 packets received, 0.0% packet loss

round-trip min/avg/max/std-dev = 2.037/2.409/2.738/0.243 ms

[CE2]%Mar 16 07:34:10:384 2016 CE2 PING/6/PING_STATISTICS: Ping statistics for 100.0.0.2: 5 packets transmitted, 5 packets received, 0.0% packet loss, round-trip min/avg/max/std-dev = 2.037/2.409/2.738/0.243 ms.

1.  OSPF路由宣告既可以现在OSPF进程下也可以在接口下使用OSPF 1 area命令宣告；

2.  MPLS 隧道策略默认按照LSP隧道－>GRE隧道－>CR-LSP隧道的优先级顺序选择隧道，负载分担的隧道数目为1；本例中未配置其他隧道所以可以不用配置隧道策略，如果存在其他隧道，可以按照本例中的配置配置隧道优选策略，，优选CR-LSP，并在 PW中调用；

3.  沿途路径上均需要使能MPLS TE/RSVP等相关配置。