|
案例分析 | Cisco | 1483 次查看 |
|---|---|---|
验证在OSPF的网络环境下,MPLS动态流量工程和BGP4的EBGP和IBGP。 本实验验证四个技术点: a. 路由协议OSPF的运行 b. MPLS的动态流量工程机制 c. BGP4的EBGP和IBGP d. 承载10万条BGP路由表能力 2. 实验环境: 实验环境如图: ![]() 三台骨干的路由器为Area 0的骨干路由器 R5为STUB Area 1、R6为Total NSSA Area 2 三台骨干的路由器运行流量工程 ![]() 3. 实验方法: 在如图环境中首先通过一系列命令确认MPLS TE隧道的建立、然后在R5上通过Trace命令分别跟踪R4上不同的端口Lo0和FE0端口。会产生不同的效果、到Lo0会从R2直接通过到达R4、到FE0端口会从R3再到R2到达R4。产生明显的流量工程效果、并能显示出MPLS的标记效果。 在如图环境中通过一系列命令确认OSPF的邻居关系、数据库等是否正常、包括NSSA和STUB域是否正常。 在如图环境中通过一系列命令确认BGP的邻居关系、查看TCP链接、及路由是否正确学到。 4. 配置命令: mpls traffic-eng tunnels no mpls traffic-eng auto-bw timers frequency 0 tag-switching tdp router-id Loopback0 ! ! ! ! interface Loopback0 ip address 10.10.10.1 255.255.255.255 no ip directed-broadcast ! interface Tunnel1 ip unnumbered Loopback0 no ip directed-broadcast tunnel source Loopback0 tunnel destination 10.10.20.2 tunnel mode mpls traffic-eng tunnel mpls traffic-eng priority 7 7 tunnel mpls traffic-eng bandwidth 200 tunnel mpls traffic-eng path-option 1 dynamic ! interface Tunnel2 ip unnumbered Loopback0 no ip directed-broadcast tunnel source Loopback0 tunnel destination 10.10.20.2 tunnel mode mpls traffic-eng tunnel mpls traffic-eng priority 7 7 tunnel mpls traffic-eng bandwidth 300 tunnel mpls traffic-eng path-option 1 dynamic ! interface Multilink1 ip address 10.10.12.1 255.255.255.0 no ip directed-broadcast mpls traffic-eng tunnels tag-switching ip ppp multilink multilink-group 1 ip rsvp bandwidth 300 300 router ospf 1 router-id 10.10.10.1 log-adjacency-changes nsf area 1 stub passive-interface Loopback0 network 10.10.10.0 0.0.0.255 area 0 network 10.10.11.0 0.0.0.255 area 0 network 10.10.12.0 0.0.0.255 area 0 network 10.10.13.0 0.0.0.255 area 0 network 10.10.15.0 0.0.0.255 area 1 mpls traffic-eng router-id Loopback0 mpls traffic-eng area 0 ! router rip version 2 network 100.0.0.0 network 222.222.222.0 ! router bgp 100 no synchronization bgp log-neighbor-changes neighbor 10.10.20.2 remote-as 100 neighbor 10.10.20.2 update-source Loopback0 neighbor 10.10.30.3 remote-as 100 neighbor 10.10.30.3 update-source Loopback0 no auto-summary ! ip classless ip route 10.10.24.44 255.255.255.255 Tunnel2 ip route 10.10.40.4 255.255.255.255 Tunnel1 ! ! logging 10.10.3.99 access-list 101 permit ip 100.100.100.0 0.0.0.255 200.200.200.0 0.0.0.255 route-map MPLStunnel permit 10 match interface FastEthernet2/0/0 set interface Tunnel2 ! route-map MPLStunnel permit 20 match interface FastEthernet2/0/1 set interface Tunnel1 ! 5. 确认: 1. OSPF 流量工程: R1#sh ip rou Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR Gateway of last resort is not set 222.222.222.0/24 is variably subnetted, 2 subnets, 2 masks C 222.222.222.2/32 is directly connected, Serial4/1/3 C 222.222.222.0/24 is directly connected, Serial4/1/3 100.0.0.0/24 is subnetted, 2 subnets C 100.100.100.0 is directly connected, FastEthernet10/0/0 C 100.100.110.0 is directly connected, FastEthernet10/0/1 10.0.0.0/8 is variably subnetted, 19 subnets, 2 masks O 10.10.3.0/24 [110/2] via 10.10.13.3, 00:02:25, POS4/0/0 C 10.10.11.0/24 is directly connected, FastEthernet2/0/0 C 10.10.10.1/32 is directly connected, Loopback0 C 10.10.12.0/24 is directly connected, Multilink1 C 10.10.13.0/24 is directly connected, POS4/0/0 C 10.10.12.2/32 is directly connected, Multilink1 C 10.10.15.0/24 is directly connected, FastEthernet2/0/1 --More-- O IA 10.10.22.0/24 [110/3] via 10.10.13.3, 00:02:26, POS4/0/0 O 10.10.20.2/32 [110/3] via 10.10.13.3, 00:02:26, POS4/0/0 O 10.10.23.0/24 [110/2] via 10.10.13.3, 00:02:26, POS4/0/0 O 10.10.24.0/24 [110/3] via 10.10.13.3, 00:02:26, POS4/0/0 O IA 10.10.26.0/24 [110/18] via 10.10.13.3, 00:02:26, POS4/0/0 O 10.10.30.3/32 [110/2] via 10.10.13.3, 00:02:26, POS4/0/0 O 10.10.33.0/24 [110/2] via 10.10.13.3, 00:02:26, POS4/0/0 S 10.10.40.4/32 is directly connected, Tunnel1 S 10.10.24.44/32 is directly connected, Tunnel2 O 10.10.50.5/32 [110/2] via 10.10.15.5, 00:04:51, FastEthernet2/0/1 O E2 10.10.99.0/24 [110/20] via 10.10.13.3, 00:02:26, POS4/0/0 O 10.10.100.0/24 [110/3] via 10.10.13.3, 00:02:27, POS4/0/0 R1# sh mpls tr R1# sh mpls traffic-eng tu Name: R1_t1 (Tunnel1) Destination: 10.10.20.2 Status: Admin: up Oper: up Path: valid Signalling: connected path option 1, type dynamic (Basis for Setup, path weight 21) Config Parameters: Bandwidth: 200 kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF Metric Type: TE (default) AutoRoute: disabled LockDown: disabled Loadshare: 200 bw-based auto-bw: disabled InLabel : - OutLabel : Multilink1, implicit-null RSVP Signalling Info: Src 10.10.10.1, Dst 10.10.20.2, Tun_Id 1, Tun_Instance 262 RSVP Path Info: My Address: 10.10.10.1 Explicit Route: 10.10.12.2 10.10.20.2 Record Route: NONE Tspec: ave rate=200 kbits, burst=1000 bytes, peak rate=200 kbits RSVP Resv Info: --More-- Record Route: NONE Fspec: ave rate=200 kbits, burst=1000 bytes, peak rate=Inf History: Tunnel: Time since created: 2 hours, 10 minutes Time since path change: 2 minutes, 49 seconds Current LSP: Uptime: 2 minutes, 49 seconds Prior LSP: ID: path option 1 [257] Removal Trigger: path verification failed Name: R1_t2 (Tunnel2) Destination: 10.10.20.2 Status: Admin: up Oper: up Path: valid Signalling: connected path option 1, type dynamic (Basis for Setup, path weight 2) Config Parameters: Bandwidth: 300 kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF Metric Type: TE (default) AutoRoute: disabled LockDown: disabled Loadshare: 300 bw-based auto-bw: disabled --More-- InLabel : - OutLabel : POS4/0/0, 25 RSVP Signalling Info: Src 10.10.10.1, Dst 10.10.20.2, Tun_Id 2, Tun_Instance 283 RSVP Path Info: My Address: 10.10.10.1 Explicit Route: 10.10.13.3 10.10.23.3 10.10.23.2 10.10.20.2 Record Ro |
||