IGRP Stub

关于EIGRP Stub可以参考Cisco的网页:

http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/eigrpstb.html

 

Parameter	On by default	May be combined	Description
receive-only	No	No	(optional) Prevents the router from advertising routes.
connected	Yes	Yes	(optional) Permits advertisement of connected routes.
static	No	Yes	(optional) Permits redistribution of static routes.
summary	Yes	Yes	Advertises summary routes.

 

上表是从BSCI指南上摘录下来的,不过有一容易引起误解.

正:

eigrp stub=eigrp connected summary

误:

eigrp stub static=eigrp connected summary static

因为上表显示此三项可以组合,而且connected 与summary默认为ON.

以模拟器进行测试

R2:

!

router eigrp 1
  redistribute static metric 1000000 10 255 1 1500
 network 10.0.0.0
 no auto-summary
  eigrp stub connected static summary
 no eigrp log-neighbor-changes

!

邻居的路由表:

R1:

D EX    3.3.3.3 [170/284160] via 10.1.2.2, 00:32:29, FastEthernet0/0
     10.0.0.0/24 is subnetted, 2 subnets
C       10.1.2.0 is directly connected, FastEthernet0/0
D       10.2.3.0 [90/284160] via 10.1.2.2, 00:32:29, FastEthernet0/0

3.3.3.3为R2到R3的静态路由.10.2.3.0为R2直连

更改R2的配置:

!
router eigrp 1
 redistribute static metric 1000000 10 255 1 1500
 network 10.0.0.0
 no auto-summary
 eigrp stub static
 no eigrp log-neighbor-changes
!

邻居的路由表:

R1:

D EX    3.3.3.3 [170/284160] via 10.1.2.2, 00:00:54, FastEthernet0/0
     10.0.0.0/24 is subnetted, 1 subnets
C       10.1.2.0 is directly connected, FastEthernet0/0

可以看到R2不再对外宣告connected网络

所以要同时宣告这些网络需要使用

eigrp stub connected static summary

完!