IOXR实验指南
ISIS实验
6509做二层交换机
cc07-6500-4(config-if)#do sh run int ten 1/1 Building configuration...
Current configuration : 98 bytes !
interface TenGigabitEthernet1/1 switchport
load-interval 30
spanning-tree portfast edge end
cc07-6500-4(config-if)#do sh run int ten 1/3 Building configuration...
Current configuration : 98 bytes !
interface TenGigabitEthernet1/3 switchport
load-interval 30
spanning-tree portfast edge end
ch09-crs-1的ISIS配置：
RP/0/RP0/CPU0:ch09-crs-1#sh run router isis Fri Jul 30 22:48:25.147 AEST router isis 100
net 00.0001.0000.0000.0002.00 address-family ipv4 unicast metric-style wide !
interface TenGigE1/6/0/0 address-family ipv4 unicast ! !
interface TenGigE1/6/1/0 address-family ipv4 unicast ! !
interface TenGigE1/6/2/0 address-family ipv4 unicast ! ! !
Ch03-crs-1的ISIS配置
RP/0/RP0/CPU0:ch03-crs-1(config-ospf-ar-if)#do sh run router isis Fri Jul 30 22:51:23.626 AEST router isis 100
net 00.0001.0000.0000.0001.00 address-family ipv4 unicast metric-style wide
!
interface TenGigE0/1/0/0 address-family ipv4 unicast ! !
interface TenGigE0/1/1/0 address-family ipv4 unicast ! !
interface TenGigE0/1/2/0 address-family ipv4 unicast
metric 100 //该接口metric大，所以优选从ten0/1/0/0学到的路由 ! ! !
分别记录CH09和CH03路由器收到的ISIS 邻居， 路由条目数目，记录路由路径。
RP/0/RP0/CPU0:ch03-crs-1#sh isis nei Fri Jul 30 23:09:16.058 AEST
IS-IS 100 neighbors:
System Id Interface SNPA State Holdtime Type IETF-NSF ch09-crs-1 Te0/1/0/0 0017.0e8f.25f7 Up 8 L1L2 Capable ch09-crs-1 Te0/1/2/0 0017.0e8f.260f Up 9 L1L2 Capable
RP/0/RP0/CPU0:ch03-crs-1(config-ospf-ar-if)#do sh route summ Fri Jul 30 23:00:18.448 AEST
Route Source Routes Backup Deleted Memory (bytes) connected 4 0 0 552 local 5 0 0 620 static 3 0 0 372 isis 100 7500 4 0 930496 bgp 1001 0 0 0 0 ospf 100 1 0 0 180 Total 7513 4 0 932220
RP/0/RP0/CPU0:ch03-crs-1(config-ospf-ar-if)#do sh route isis Fri Jul 30 23:00:27.653 AEST
i L2 20.29.76.0/24 [115/21] via 10.1.10.1, 03:48:10, TenGigE0/1/0/0
i L2 20.29.77.0/24 [115/21] via 10.1.10.1, 03:48:10, TenGigE0/1/0/0 i L2 20.29.78.0/24 [115/21] via 10.1.10.1, 03:48:10, TenGigE0/1/0/0 i L2 20.29.79.0/24 [115/21] via 10.1.10.1, 03:48:10, TenGigE0/1/0/0 i L2 20.29.80.0/24 [115/21] via 10.1.10.1, 03:48:10, TenGigE0/1/0/0 i L2 20.29.81.0/24 [115/21] via 10.1.10.1, 03:48:10, TenGigE0/1/0/0 i L2 20.29.82.0/24 [115/21] via 10.1.10.1, 03:48:10, TenGigE0/1/0/0
RP/0/RP0/CPU0:ch09-crs-1#sh route summ Fri Jul 30 23:00:07.902 AEST
Route Source Routes Backup Deleted Memory (bytes) connected 4 0 0 552 local 5 0 0 620 static 2 0 0 248 dagr 0 0 0 0 isis 100 7500 4 0 930720 bgp 1001 0 0 0 0 ospf 100 1 0 0 180 Total 7512 4 0 932320
RP/0/RP0/CPU0:ch09-crs-1# RP/0/RP0/CPU0:ch09-crs-1#
RP/0/RP0/CPU0:ch09-crs-1#sh route isis Fri Jul 30 23:01:33.720 AEST
i L2 20.29.76.0/24 [115/11] via 192.168.20.2, 04:32:19, TenGigE1/6/1/0 i L2 20.29.77.0/24 [115/11] via 192.168.20.2, 04:32:19, TenGigE1/6/1/0 i L2 20.29.78.0/24 [115/11] via 192.168.20.2, 04:32:19, TenGigE1/6/1/0 i L2 20.29.79.0/24 [115/11] via 192.168.20.2, 04:32:19, TenGigE1/6/1/0 i L2 20.29.80.0/24 [115/11] via 192.168.20.2, 04:32:19, TenGigE1/6/1/0 i L2 20.29.81.0/24 [115/11] via 192.168.20.2, 04:32:19, TenGigE1/6/1/0 i L2 20.29.82.0/24 [115/11] via 192.168.20.2, 04:32:19, TenGigE1/6/1/0 i L2 20.29.83.0/24 [115/11] via 192.168.20.2, 04:32:19, TenGigE1/6/1/0 i L2 20.29.84.0/24 [115/11] via 192.168.20.2, 04:32:19, TenGigE1/6/1/0
RP/0/RP0/CPU0:ch09-crs-1#sh isis nei Fri Jul 30 23:09:41.339 AEST
IS-IS 100 neighbors:
System Id Interface SNPA State Holdtime Type IETF-NSF ch03-crs-1 Te1/6/0/0 0012.80ae.9476 Up 24 L1L2 Capable ch03-crs-1 Te1/6/2/0 0012.80ae.948e Up 24 L1L2 Capable 0010.9400.0002 Te1/6/1/0 0010.9400.0002 Up 25 L2 Unable
Total neighbor count: 3
不启用BFD for ISIS， 观察当非直连链路断掉后路由收敛效果。
非直连链路断掉情况模拟（链路断掉，但接口仍然处于UP状态
cc07-6500-4(config)#int ten 1/3
cc07-6500-4(config-if)#switchport access vlan 100
不启用BFD，需要较长时间路由(5,6秒)才能跟新到备用路 RP/0/RP0/CPU0:ch03-crs-1(config-ospf-ar-if)#do sh route isis Fri Jul 30 23:05:44.369 AEST
i L2 20.29.76.0/24 [115/111] via 10.1.12.1, 00:00:09, TenGigE0/1/2/0 i L2 20.29.77.0/24 [115/111] via 10.1.12.1, 00:00:09, TenGigE0/1/2/0 i L2 20.29.78.0/24 [115/111] via 10.1.12.1, 00:00:09, TenGigE0/1/2/0 i L2 20.29.79.0/24 [115/111] via 10.1.12.1, 00:00:09, TenGigE0/1/2/0 i L2 20.29.80.0/24 [115/111] via 10.1.12.1, 00:00:09, TenGigE0/1/2/0 i L2 20.29.81.0/24 [115/111] via 10.1.12.1, 00:00:09, TenGigE0/1/2/0 i L2 20.29.82.0/24 [115/111] via 10.1.12.1, 00:00:09, TenGigE0/1/2/0 i L2 20.29.83.0/24 [115/111] via 10.1.12.1, 00:00:09, TenGigE0/1/2/0 i L2 20.29.84.0/24 [115/111] via 10.1.12.1, 00:00:09, TenGigE0/1/2/0
启用BFD for ISIS， 观察当非直连链路断掉后路由收敛效果 非直连链路断掉情况模拟（链路断掉，但接口仍然处于UP状态
RP/0/RP0/CPU0:ch03-crs-1(config-ospf-ar-if)#do sh run router isis Fri Jul 30 22:51:23.626 AEST router isis 100
interface TenGigE0/1/0/0
bfd minimum-interval 15 ！hello包间隔
bfd multiplier 2 ！bfd hello包timout数目 bfd fast-detect ipv4 !启用bfd功能