评分并提供意见反馈 :
华为采用机器翻译与人工审校相结合的方式将此文档翻译成不同语言，希望能帮助您更容易理解此文档的内容。 请注意：即使是最好的机器翻译，其准确度也不及专业翻译人员的水平。 华为对于翻译的准确性不承担任何责任，并建议您参考英文文档（已提供链接）。
配置区域间隧道示例
组网需求
如图3-14所示：
LSRA、LSRB、LSRC、LSRD和LSRE运行IS-IS
LSRA和LSRE属于Level-1
LSRB和LSRD属于Level-1-2
LSRC属于Level-2。
使用RSVP-TE从LSRA到LSRE建立一条跨越IS-IS区域的TE隧道，带宽为20Mbit/s。
隧道沿途的链路最大可预留带宽为100Mbit/s，BC0带宽为100Mbit/s。
配置思路
采用如下的思路使用RSVP-TE配置MPLS TE隧道：
配置各LSR的接口IP地址及作为LSR ID的Loopback地址。
全局使能ISIS协议，并使能IS-IS TE。
配置松散显式路径，路径节点包括ABR（LSRB、LSRC和LSRD）。
配置MPLS RSVP-TE。
在隧道沿途的各链路出接口上配置链路的带宽属性。
在入节点创建隧道接口，指定隧道的IP地址、隧道协议、目的地址、隧道ID、动态信令协议RSVP-TE以及隧道带宽。
数据准备
为完成此配置例，需准备如下的数据：
各LSR的IS-IS区域ID、起始的系统ID、IS-IS Level
隧道沿途的链路最大可预留带宽和BC带宽
隧道接口的接口编号、IP地址、目的地址、隧道ID、隧道信令协议（为RSVP-TE）隧道带宽
操作步骤
- 配置各LSR的接口IP地址
按照图3-14配置接口的IP地址和掩码，具体配置过程略。
- 配置IS-IS协议发布路由
# 配置LSRA。
[~LSRA] isis 1[*LSRA-isis-1] network-entity 00.0005.0000.0000.0001.00[*LSRA-isis-1] is-level level-1[*LSRA-isis-1] quit[*LSRA] interface gigabitethernet 0/1/0
[*LSRA-GigabitEthernet0/1/0] isis enable 1
[*LSRA-GigabitEthernet0/1/0] quit
[*LSRA] interface loopback 1[*LSRA-LoopBack1] isis enable 1[*LSRA-LoopBack1] commit[~LSRA-LoopBack1] quit# 配置LSRB。
[~LSRB] isis 1[*LSRB-isis-1] network-entity 00.0005.0000.0000.0002.00[*LSRB-isis-1] is-level level-1-2[*LSRB-isis-1] import-route isis level-2 into level-1[*LSRB-isis-1] quit[*LSRB] interface gigabitethernet 0/1/0
[*LSRB-GigabitEthernet0/1/0] isis enable 1
[*LSRB-GigabitEthernet0/1/0] quit
[*LSRB] interface gigabitethernet 0/2/0
[*LSRB-GigabitEthernet0/2/0] isis enable 1
[*LSRB-GigabitEthernet0/2/0] quit
[*LSRB] interface loopback 1[*LSRB-LoopBack1] isis enable 1[*LSRB-LoopBack1] commit[~LSRB-LoopBack1] quit# 配置LSRC。
[~LSRC] isis 1[*LSRC-isis-1] network-entity 00.0006.0000.0000.0003.00[*LSRC-isis-1] is-level level-2[*LSRC-isis-1] quit[*LSRC] interface gigabitethernet 0/1/0
[*LSRC-GigabitEthernet0/1/0] isis enable 1
[*LSRC-GigabitEthernet0/1/0] quit
[*LSRC] interface gigabitethernet 0/2/0
[*LSRC-GigabitEthernet0/2/0] isis enable 1
[*LSRC-GigabitEthernet0/2/0] quit
[*LSRC] interface loopback 1[*LSRC-LoopBack1] isis enable 1[*LSRC-LoopBack1] commit[~LSRC-LoopBack1] quit# 配置LSRD。
[~LSRD] isis 1[*LSRD-isis-1] network-entity 00.0007.0000.0000.0004.00[*LSRD-isis-1] is-level level-1-2[*LSRD-isis-1] import-route isis level-2 into level-1[*LSRD-isis-1] quit[*LSRD] interface gigabitethernet 0/1/0
[*LSRD-GigabitEthernet0/1/0] isis enable 1
[*LSRD-GigabitEthernet0/1/0] quit
[*LSRD] interface gigabitethernet 0/2/0
[*LSRD-GigabitEthernet0/2/0] isis enable 1
[*LSRD-GigabitEthernet0/2/0] quit
[*LSRD] interface loopback 1[*LSRD-LoopBack1] isis enable 1[*LSRD-LoopBack1] commit[~LSRD-LoopBack1] quit# 配置LSRE。
[~LSRE] isis 1[*LSRE-isis-1] network-entity 00.0007.0000.0000.0005.00[*LSRE-isis-1] is-level level-1[*LSRE-isis-1] quit[*LSRE] interface gigabitethernet 0/1/0
[*LSRE-GigabitEthernet0/1/0] isis enable 1
[*LSRE-GigabitEthernet0/1/0] quit
[*LSRE] interface loopback 1[*LSRE-LoopBack1] isis enable 1[*LSRE-LoopBack1] commit[~LSRE-LoopBack1] quit配置完成后，在各LSR上执行display ip routing-table命令，可以看到相互之间都学到了到对方的路由。
- 配置MPLS基本能力，使能MPLS TE、RSVP-TE，在隧道入节点使能CSPF
# 配置LSRA。
[~LSRA] mpls lsr-id 1.1.1.1[*LSRA] mpls[*LSRA-mpls] mpls te[*LSRA-mpls] mpls rsvp-te[*LSRA-mpls] mpls te cspf[*LSRA-mpls] quit[*LSRA] interface gigabitethernet 0/1/0
[*LSRA-GigabitEthernet0/1/0] mpls
[*LSRA-GigabitEthernet0/1/0] mpls te
[*LSRA-GigabitEthernet0/1/0] mpls rsvp-te
[*LSRA-GigabitEthernet0/1/0] commit
[~LSRA-GigabitEthernet0/1/0] quit
# 配置LSRB。
[~LSRB] mpls lsr-id 2.2.2.2[*LSRB] mpls[*LSRB-mpls] mpls te[*LSRB-mpls] mpls rsvp-te[*LSRB-mpls] quit[*LSRB] interface gigabitethernet 0/1/0
[*LSRB-GigabitEthernet0/1/0] mpls
[*LSRB-GigabitEthernet0/1/0] mpls te
[*LSRB-GigabitEthernet0/1/0] mpls rsvp-te
[*LSRB-GigabitEthernet0/1/0] quit
[*LSRB] interface gigabitethernet 0/2/0
[*LSRB-GigabitEthernet0/2/0] mpls
[*LSRB-GigabitEthernet0/2/0] mpls te
[*LSRB-GigabitEthernet0/2/0] mpls rsvp-te
[*LSRB-GigabitEthernet0/2/0] commit
[~LSRB-GigabitEthernet0/2/0] quit
# 配置LSRC。
[~LSRC] mpls lsr-id 3.3.3.3[*LSRC] mpls[*LSRC-mpls] mpls te[*LSRC-mpls] mpls rsvp-te[*LSRC-mpls] quit[*LSRC] interface gigabitethernet 0/1/0
[*LSRC-GigabitEthernet0/1/0] mpls
[*LSRC-GigabitEthernet0/1/0] mpls te
[*LSRC-GigabitEthernet0/1/0] mpls rsvp-te
[*LSRC-GigabitEthernet0/1/0] quit
[*LSRC] interface gigabitethernet 0/2/0
[*LSRC-GigabitEthernet0/2/0] mpls
[*LSRC-GigabitEthernet0/2/0] mpls te
[*LSRC-GigabitEthernet0/2/0] mpls rsvp-te
[*LSRC-GigabitEthernet0/2/0] commit
[~LSRC-GigabitEthernet0/2/0] quit
# 配置LSRD。
[~LSRD] mpls lsr-id 4.4.4.4[*LSRD] mpls[*LSRD-mpls] mpls te[*LSRD-mpls] mpls rsvp-te[*LSRD-mpls] quit[*LSRD] interface gigabitethernet 0/1/0
[*LSRD-GigabitEthernet0/1/0] mpls
[*LSRD-GigabitEthernet0/1/0] mpls te
[*LSRD-GigabitEthernet0/1/0] mpls rsvp-te
[*LSRD-GigabitEthernet0/1/0] quit
[*LSRD] interface gigabitethernet 0/2/0
[*LSRD-GigabitEthernet0/2/0] mpls
[*LSRD-GigabitEthernet0/2/0] mpls te
[*LSRD-GigabitEthernet0/2/0] mpls rsvp-te
[*LSRD-GigabitEthernet0/2/0] commit
[~LSRD-GigabitEthernet0/2/0] quit
# 配置LSRE。
[~LSRE] mpls lsr-id 5.5.5.5[*LSRE] mpls[*LSRE-mpls] mpls te[*LSRE-mpls] mpls rsvp-te[*LSRE-mpls] quit[*LSRE] interface gigabitethernet 0/1/0
[*LSRE-GigabitEthernet0/1/0] mpls
[*LSRE-GigabitEthernet0/1/0] mpls te
[*LSRE-GigabitEthernet0/1/0] mpls rsvp-te
[*LSRE-GigabitEthernet0/1/0] commit
[~LSRE-GigabitEthernet0/1/0] quit
- 配置IS-IS TE
# 配置LSRA。
[~LSRA] isis 1[~LSRA-isis-1] cost-style wide[*LSRA-isis-1] traffic-eng level-1[*LSRA-isis-1] commit[~LSRA-isis-1] quit# 配置LSRB。
[~LSRB] isis 1[~LSRB-isis-1] cost-style wide[*LSRB-isis-1] traffic-eng level-1-2[*LSRB-isis-1] commit[~LSRB-isis-1] quit# 配置LSRC。
[~LSRC] isis 1[~LSRC-isis-1] cost-style wide[*LSRC-isis-1] traffic-eng level-2[*LSRC-isis-1] commit[~LSRC-isis-1] quit# 配置LSRD。
[~LSRD] isis 1[~LSRD-isis-1] cost-style wide[*LSRD-isis-1] traffic-eng level-1-2[*LSRD-isis-1] commit[~LSRD-isis-1] quit# 配置LSRE。
[~LSRE] isis 1[~LSRE-isis-1] cost-style wide[*LSRE-isis-1] traffic-eng level-1[*LSRE-isis-1] commit[~LSRE-isis-1] quit - 配置松散显式路径
[~LSRA] explicit-path atoe enable[*LSRA-explicit-path-atoe] next hop 10.1.1.2 include loose[*LSRA-explicit-path-atoe] next hop 10.2.1.2 include loose[*LSRA-explicit-path-atoe] next hop 10.3.1.2 include loose[*LSRA-explicit-path-atoe] next hop 10.4.1.2 include loose[*LSRA-explicit-path-atoe] commit - 配置链路的MPLS TE属性
# 在LSRA上配置链路的最大可预留带宽和BC0带宽。
[~LSRA] interface gigabitethernet 0/1/0
[~LSRA-GigabitEthernet0/1/0] mpls te bandwidth max-reservable-bandwidth 100000
[*LSRA-GigabitEthernet0/1/0] mpls te bandwidth bc0 100000
[*LSRA-GigabitEthernet0/1/0] commit
[~LSRA-GigabitEthernet0/1/0] quit
# 在LSRB上配置链路的最大带宽和最大可预留带宽。
[~LSRB] interface gigabitethernet 0/2/0
[~LSRB-GigabitEthernet0/2/0] mpls te bandwidth max-reservable-bandwidth 100000
[*LSRB-GigabitEthernet0/2/0] mpls te bandwidth bc0 100000
[*LSRB-GigabitEthernet0/2/0] commit
[~LSRB-GigabitEthernet0/2/0] quit
# 在LSRC上配置链路的最大带宽和最大可预留带宽。
[~LSRC] interface gigabitethernet 0/1/0
[~LSRC-GigabitEthernet0/1/0] mpls te bandwidth max-reservable-bandwidth 100000
[*LSRC-GigabitEthernet0/1/0] mpls te bandwidth bc0 100000
[*LSRC-GigabitEthernet0/1/0] commit
[~LSRC-GigabitEthernet0/1/0] quit
# 在LSRD上配置链路的最大带宽和最大可预留带宽。
[~LSRD] interface gigabitethernet 0/2/0
[~LSRD-GigabitEthernet0/2/0] mpls te bandwidth max-reservable-bandwidth 100000
[*LSRD-GigabitEthernet0/2/0] mpls te bandwidth bc0 100000
[*LSRD-GigabitEthernet0/2/0] commit
[~LSRD-GigabitEthernet0/2/0] quit
- 配置MPLS TE隧道
# 在LSRA上配置MPLS TE隧道。
[~LSRA] interface tunnel1[*LSRA-Tunnel1] ip address unnumbered interface loopback 1[*LSRA-Tunnel1] tunnel-protocol mpls te[*LSRA-Tunnel1] destination 5.5.5.5[*LSRA-Tunnel1] mpls te tunnel-id 1[*LSRA-Tunnel1] mpls te bandwidth ct0 20000
[*LSRA-Tunnel1] mpls te path explicit-path atoe[*LSRA-Tunnel1] commit[~LSRA-Tunnel1] quit - 验证配置结果
配置完成后，在LSRA上执行display interface tunnel命令可以看到隧道接口状态为Up。
[~LSRA] display interface TunnelTunnel1 current state : UP (ifindex: 26) Line protocol current state : UP Last line protocol up time : 2012-03-08 04:52:40 Description: Route Port,The Maximum Transmit Unit is 1500 nternet Address is unnumbered, using address of LoopBack1(1.1.1.1/32) Encapsulation is TUNNEL, loopback not set Tunnel destination 5.5.5.5 Tunnel up/down statistics 1 Tunnel protocol/transport MPLS/MPLS, ILM is available, primary tunnel id is 0x97, secondary tunnel id is 0x0 Current system time: 2012-03-08 08:33:55 300 seconds output rate 0 bits/sec, 0 packets/sec 0 seconds output rate 0 bits/sec, 0 packets/sec 126 packets output, 34204 bytes 0 output error 18 output drop Last 300 seconds input utility rate: 0.00% Last 300 seconds output utility rate: 0.00%# 在LSRA上执行display mpls te tunnel-interface命令可以看到隧道详细信息。
[~LSRA] display mpls te tunnel-interface tunnel1Tunnel Name : Tunnel1 Signalled Tunnel Name: - Tunnel State Desc : CR-LSP is Up Tunnel Attributes : Active LSP : Primary LSP Traffic Switch : - Session ID : 1 Ingress LSR ID : 1.1.1.9 Egress LSR ID: 4.4.4.9 Admin State : UP Oper State : UP Signaling Protocol : RSVP FTid : 1 Tie-Breaking Policy : None Metric Type : None Bfd Cap : None Reopt : Disabled Reopt Freq : - Inter-area Reopt : Disabled Auto BW : Disabled Threshold : 0 percent Current Collected BW: 0 kbps Auto BW Freq : 0 Min BW : 0 kbps Max BW : 0 kbps Offload : Disabled Offload Freq : - Low Value : - High Value : - Readjust Value : - Offload Explicit Path Name: Tunnel Group : - Interfaces Protected: - Excluded IP Address : - Referred LSP Count : 0 Primary Tunnel : - Pri Tunn Sum : - Backup Tunnel : - Group Status : Up Oam Status : - IPTN InLabel : - Tunnel BFD Status : - BackUp LSP Type : Hot-Standby BestEffort : Enabled Secondary HopLimit : - BestEffort HopLimit : - Secondary Explicit Path Name: - Secondary Affinity Prop/Mask: 0x0/0x0 BestEffort Affinity Prop/Mask: 0x0/0x0 IsConfigLspConstraint: - Hot-Standby Revertive Mode: Revertive Hot-Standby Overlap-path: Disabled Hot-Standby Switch State: CLEAR Bit Error Detection: Disabled Bit Error Detection Switch Threshold: - Bit Error Detection Resume Threshold: - Ip-Prefix Name : - P2p-Template Name : - PCE Delegate : Only status report LSP Control Status : Local control Entropy Label :None Auto BW Remain Time : 200 s Reopt Remain Time : 100 s Metric Inherit IGP : None Binding Sid : - Reverse Binding Sid : - FRR Attr Source : - Is FRR degrade down : No Primary LSP ID : 1.1.1.9:19 LSP State : UP LSP Type : Primary Setup Priority : 7 Hold Priority: 7 IncludeAll : 0x0 IncludeAny : 0x0 ExcludeAny : 0x0 Affinity Prop/Mask : 0x0/0x0 Resv Style : SE Configured Bandwidth Information: CT0 Bandwidth(Kbit/sec): 10000 CT1 Bandwidth(Kbit/sec): 0 CT2 Bandwidth(Kbit/sec): 0 CT3 Bandwidth(Kbit/sec): 0 CT4 Bandwidth(Kbit/sec): 0 CT5 Bandwidth(Kbit/sec): 0 CT6 Bandwidth(Kbit/sec): 0 CT7 Bandwidth(Kbit/sec): 0 Actual Bandwidth Information: CT0 Bandwidth(Kbit/sec): 10000 CT1 Bandwidth(Kbit/sec): 0 CT2 Bandwidth(Kbit/sec): 0 CT3 Bandwidth(Kbit/sec): 0 CT4 Bandwidth(Kbit/sec): 0 CT5 Bandwidth(Kbit/sec): 0 CT6 Bandwidth(Kbit/sec): 0 CT7 Bandwidth(Kbit/sec): 0 Explicit Path Name : main Hop Limit: - Record Route : Disabled Record Label : Disabled Route Pinning : Disabled FRR Flag : Disabled IdleTime Remain : - BFD Status : - Soft Preemption : Enabled Reroute Flag : Disabled Pce Flag : Normal Path Setup Type : EXPLICIT Create Modify LSP Reason: - Backup LSP ID : 1.1.1.9:46945 IsBestEffortPath : No LSP State : UP LSP Type : Hot-Standby Setup Priority : 7 Hold Priority: 7 IncludeAll : 0x0 IncludeAny : 0x0 ExcludeAny : 0x0 Affinity Prop/Mask : 0x0/0x0 Resv Style : SE Configured Bandwidth Information: CT0 Bandwidth(Kbit/sec): 0 CT1 Bandwidth(Kbit/sec): 0 CT2 Bandwidth(Kbit/sec): 0 CT3 Bandwidth(Kbit/sec): 0 CT4 Bandwidth(Kbit/sec): 0 CT5 Bandwidth(Kbit/sec): 0 CT6 Bandwidth(Kbit/sec): 0 CT7 Bandwidth(Kbit/sec): 0 Actual Bandwidth Information: CT0 Bandwidth(Kbit/sec): 0 CT1 Bandwidth(Kbit/sec): 0 CT2 Bandwidth(Kbit/sec): 0 CT3 Bandwidth(Kbit/sec): 0 CT4 Bandwidth(Kbit/sec): 0 CT5 Bandwidth(Kbit/sec): 0 CT6 Bandwidth(Kbit/sec): 0 CT7 Bandwidth(Kbit/sec): 0 Explicit Path Name : - Hop Limit: - Record Route : Enabled Record Label : Disabled Route Pinning : Disabled FRR Flag : Disabled IdleTime Remain : - BFD Status : - Soft Preemption : Enabled Reroute Flag : Enabled Pce Flag : Normal Path Setup Type : CSPF Create Modify LSP Reason: -
配置文件
LSRA的配置文件
#
sysname LSRA
#
mpls lsr-id 1.1.1.1
#
mpls
mpls te
mpls te cspf
mpls rsvp-te
#
explicit-path atoe
next hop 10.1.1.2 include loose
next hop 10.2.1.2 include loose
next hop 10.3.1.2 include loose
next hop 10.4.1.2 include loose
isis 1
is-level level-1
cost-style wide
traffic-eng level-1
network-entity 00.0005.0000.0000.0001.00
#
interface GigabitEthernet0/1/0undo shutdown
ip address 10.1.1.1 255.255.255.0
mpls
mpls te
mpls te bandwidth max-reservable-bandwidth 100000
mpls te bandwidth bc0 100000
isis enable 1
mpls rsvp-te
#
interface LoopBack1
ip address 1.1.1.1 255.255.255.255
isis enable 1
#
interface Tunnel1
ip address unnumbered interface LoopBack1
tunnel-protocol mpls te
destination 5.5.5.5
mpls te tunnel-id 1
mpls te bandwidth ct0 20000mpls te path explicit-path atoe
#
return
LSRB的配置文件
#
sysname LSRB
#
mpls lsr-id 2.2.2.2
#
mpls
mpls te
mpls rsvp-te
isis 1
is-level level-1-2
cost-style wide
traffic-eng level-1-2
import-route isis level-2 into level-1
network-entity 00.0005.0000.0000.0002.00
#
interface GigabitEthernet0/1/0undo shutdown
ip address 10.1.1.2 255.255.255.0
mpls
mpls te
isis enable 1
mpls rsvp-te
#
interface GigabitEthernet0/2/0undo shutdown
ip address 10.2.1.1 255.255.255.0
mpls
mpls te
mpls te bandwidth max-reservable-bandwidth 100000
mpls te bandwidth bc0 100000
isis enable 1
mpls rsvp-te
#
interface LoopBack1
ip address 2.2.2.2 255.255.255.255
isis enable 1
#
return
LSRC的配置文件
#
sysname LSRC
#
mpls lsr-id 3.3.3.3
#
mpls
mpls te
mpls rsvp-te
isis 1
is-level level-2
cost-style wide
traffic-eng level-2
network-entity 00.0006.0000.0000.0003.00
#
interface GigabitEthernet0/1/0undo shutdown
ip address 10.2.1.1 255.255.255.0
mpls
mpls te
mpls te bandwidth max-reservable-bandwidth 100000
mpls te bandwidth bc0 100000
isis enable 1
mpls rsvp-te
#
interface GigabitEthernet0/2/0undo shutdown
ip address 10.2.1.2 255.255.255.0
mpls
mpls te
isis enable 1
mpls rsvp-te
#
interface LoopBack1
ip address 3.3.3.3 255.255.255.255
isis enable 1
#
return
LSRD的配置文件
#
sysname LSRD
#
mpls lsr-id 4.4.4.4
#
mpls
mpls te
mpls rsvp-te
isis 1
is-level level-1-2
cost-style wide
traffic-eng level-1-2
network-entity 00.0007.0000.0000.0004.00
import-route isis level-2 into level-1
#
interface GigabitEthernet0/1/0undo shutdown
ip address 10.2.1.2 255.255.255.0
mpls
mpls te
isis enable 1
mpls rsvp-te
#
interface GigabitEthernet0/2/0undo shutdown
ip address 10.4.1.1 255.255.255.0
mpls
mpls te
mpls te bandwidth max-reservable-bandwidth 100000
mpls te bandwidth bc0 100000
isis enable 1
mpls rsvp-te
#
interface LoopBack1
ip address 4.4.4.4 255.255.255.255
isis enable 1
#
return
LSRE的配置文件
#
sysname LSRE
#
mpls lsr-id 5.5.5.5
#
mpls
mpls te
mpls rsvp-te
isis 1
is-level level-1
cost-style wide
traffic-eng level-1
network-entity 00.0007.0000.0000.0005.00
#
interface GigabitEthernet0/1/0undo shutdown
ip address 10.4.1.2 255.255.255.0
mpls
mpls te
isis enable 1
mpls rsvp-te
#
interface LoopBack1
ip address 5.5.5.5 255.255.255.255
isis enable 1
#
return
