1. EIGRP管理距离引起路由震荡的原因及解决

2. [08-24 16:25:29]   来源：http://www.85jc.com  网络故障   阅读：8471次

概要： 用trace命令验证R2(config)#do trace 192.168.45.5Type escape sequence to abort.Tracing the route to 192.168.45.5 1 1.1.234.4 252 msec 232 msec 232 msec 2 1.1.234.3 432 msec 308 msec 304 msec 3 * * * 4 1.1.234.4 576 msec 612 msec 480 msec 5 1.1.234.3 720 msec 464 msec 648 msec 6 * * * 7 1.1.234.4 528 msec 684 msec 552 msec 8 1.1.234.3 888 msec 932 msec 672 msec 9 * * * ……R3上也会出现相同的情况 解决方法将R2和R3上OSPF的AD修改为大于170 R2conf taccess 10 permit 192.168.45.0

EIGRP管理距离引起路由震荡的原因及解决,标签：网络故障解决,网络故障排除,http://www.85jc.com
 
用trace命令验证
R2(config)#do trace 192.168.45.5 Type escape sequence to abort.
Tracing the route to 192.168.45.5   1 1.1.234.4 252 msec 232 msec 232 msec
  2 1.1.234.3 432 msec 308 msec 304 msec
  3  *  *  *
  4 1.1.234.4 576 msec 612 msec 480 msec
  5 1.1.234.3 720 msec 464 msec 648 msec
  6  *  *  *
  7 1.1.234.4 528 msec 684 msec 552 msec
  8 1.1.234.3 888 msec 932 msec 672 msec
  9  *  *  *
   ……
R3上也会出现相同的情况     解决方法
将R2和R3上OSPF的AD修改为大于170  R2
conf t
access 10 permit 192.168.45.0 0.0.0.255
router ospf 1
distance 180 1.1.3.3 0.0.0.0 10
end    R3
conf t
access 10 permit 192.168.45.0 0.0.0.255
router ospf 1
distance 180 1.1.2.2 0.0.0.0 10
end     验证R2，R3，R4路由表
R2(config)#do sh ip route
Codes: C - connected, S - static, 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
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route Gateway of last resort is not set      1.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
O       1.1.4.4/32 [110/65] via 1.1.234.4, 00:11:38, Serial1/0
D       1.1.3.3/32 [90/156160] via 1.1.123.3, 00:11:38, FastEthernet0/0
C       1.1.2.2/32 is directly connected, Loopback0
D       1.1.1.1/32 [90/156160] via 1.1.123.1, 00:11:38, FastEthernet0/0
C       1.1.123.0/24 is directly connected, FastEthernet0/0
C       1.1.234.0/24 is directly connected, Serial1/0
D EX 192.168.45.0/24 [170/284160] via 1.1.123.1, 00:11:38, FastEthernet0/0
R3(config)#do sh ip route
Codes: C - connected, S - static, 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
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route Gateway of last resort is not set      1.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
O       1.1.4.4/32 [110/65] via 1.1.234.4, 00:01:27, Serial1/0
C       1.1.3.3/32 is directly connected, Loopback0
D       1.1.2.2/32 [90/156160] via 1.1.123.2, 00:01:27, FastEthernet0/0
D       1.1.1.1/32 [90/156160] via 1.1.123.1, 00:01:27, FastEthernet0/0

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