EIGRP的三张表——拓扑、邻居、路由表
Eigrp_topology.png
查看邻居表
show ip eigrp neighbors
举例
R1#sh ip eigrp neighbors
EIGRP-IPv4 Neighbors for AS(90)
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
1 13.1.1.3 Se1/1 14 14:10:45 17 102 0 27
0 12.1.1.2 Se1/0 13 14:10:53 16 100 0 23
参数说明
H：建立顺序
Address：对端IP
Interface：从哪个接口学到
Hold：10~15s间循环
Uptime：建立多久
SRTT：①<=>②往返时间（收到确认）
Hello 5s/次 在3个Hello间未收到Hello认为对端Down，断开连接
RTO：等待ACK的时间（重传超时时间）应该是SRTT的6倍，最大5000；
若重传16次还未得到确认，则此邻居被宣布无效
Q：队列计数，表示有多少个可靠报文还没有得到确认，在运行正常的环境下该值应为0
Seq：序列号
查看拓扑表
show ip eigrp topology
举例
R1#show ip eigrp topology
EIGRP-IPv4 Topology Table for AS(90)/ID(10.1.5.1)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - reply Status, s - sia Status
P 10.1.5.0/24, 1 successors, FD is 128256
via Connected, Loopback1
P 10.1.7.0/24, 1 successors, FD is 2297856
via 12.1.1.2 (2297856/128256), Serial1/0
P 24.1.1.0/24, 1 successors, FD is 2272256
via 12.1.1.2 (2681856/2169856), Serial1/0
via 13.1.1.3 (2707456/2195456), Serial1/1
P 44.1.1.0/24, 1 successors, FD is 486400
via 13.1.1.3 (2323456/409600), Serial1/1
P 10.1.6.0/24, 1 successors, FD is 2297856
via 12.1.1.2 (2297856/128256), Serial1/0
P 13.1.1.0/24, 1 successors, FD is 2169856
via Connected, Serial1/1
P 10.1.4.0/24, 1 successors, FD is 128256
via Connected, Loopback0
P 24.1.2.0/24, 1 successors, FD is 486400
via 13.1.1.3 (2323456/409600), Serial1/1
P 34.1.1.0/24, 1 successors, FD is 358400
via 13.1.1.3 (2195456/281600), Serial1/1
P 12.1.1.0/24, 1 successors, FD is 2169856
via Connected, Serial1/0
P：稳定状态（正常）
A：非稳定状态
查看具体拓扑信息
R1#show ip eigrp topology 10.1.6.0 255.255.255.0
举例
R1#show ip eigrp topology 10.1.6.0 255.255.255.0
EIGRP-IPv4 Topology Entry for AS(90)/ID(10.1.5.1) for 10.1.6.0/24
State is Passive, Query origin flag is 1, 1 Successor(s), FD is 2297856
Descriptor Blocks:
12.1.1.2 (Serial1/0), from 12.1.1.2, Send flag is 0x0
Composite metric is (2297856/128256), route is Internal
Vector metric:
Minimum bandwidth is 1544 Kbit
Total delay is 25000 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 1
Originating router is 10.1.7.1
13.1.1.3 (Serial1/1), from 13.1.1.3, Send flag is 0x0
Composite metric is (2835456/2323456), route is Internal
Vector metric:
Minimum bandwidth is 1544 Kbit
Total delay is 46000 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 3
Originating router is 10.1.7.1
Composite metric is (FD值/AD值)
Minimum bandwidth is 最小带宽 Kbit
Total delay is 总延迟 microseconds
查看路由表
R1#show ip route eigrp
举例
R1#show ip route eigrp
Codes: L - local, 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, H - NHRP, l - LISP
a - application route
+ - replicated route, % - next hop override
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
D 10.1.6.0/24 [90/2297856] via 12.1.1.2, 17:44:44, Serial1/0
D 10.1.7.0/24 [90/2297856] via 12.1.1.2, 17:44:44, Serial1/0
24.0.0.0/24 is subnetted, 2 subnets
D 24.1.1.0 [90/2681856] via 12.1.1.2, 03:44:36, Serial1/0
D 24.1.2.0 [90/2323456] via 13.1.1.3, 03:44:36, Serial1/1
34.0.0.0/24 is subnetted, 1 subnets
D 34.1.1.0 [90/2195456] via 13.1.1.3, 03:44:36, Serial1/1
44.0.0.0/24 is subnetted, 1 subnets
D 44.1.1.0 [90/2323456] via 13.1.1.3, 03:44:36, Serial1/1
说明
[90/2323456] - [AD/Metric值]
