lab 2 EIGRP Default Route

 
EIGRP发布默认路由的四种方式

  • Redistributed default route

    #R1#
router eigrp 100
    redistribute static 
     network 10.1.1.1 0.0.0.0
 no auto-summary
ip route 0.0.0.0 0.0.0.0 202.100.1.10

     

     

  • By using ip summary-address command

    #interface FastEthernet1/0
 ip address 10.1.1.1 255.255.255.0
    ip summary-address eigrp 100 0.0.0.0 0.0.0.0 5

     

  • Default route by using ip default-network command

    R1(config)#ip default-network 202.100.1.0（
    写成主类 
    ）

    这样就可以把这条路由下发给其它的路由器当做默认路由了
 使用本命令要满足以下条件：
1、接口IP地址必须是主类
2、接口必须宣告进EIGRP
3、使用命令下发时也必须写主类网络号

     

  • Default route with network 0.0.0.0 command

    R1#router eigrp 100
 network 1.1.1.1 0.0.0.0
 network 10.1.1.1 0.0.0.0
 network 0.0.0.0
 no auto-summary

ip route 0.0.0.0 0.0.0.0 FastEthernet0/0（
    写下一跳不行，必须写接口 
    ）

     

基本网络配置

 

 

R2#
interface FastEthernet0/0
 ip address 10.1.1.10 255.255.255.0
R1#


interface FastEthernet0/0
 ip address 202.100.1.1 255.255.255.0




interface FastEthernet1/0
 ip address 10.1.1.1 255.255.255.0




ip route 0.0.0.0 0.0.0.0 202.100.1.10








Interne#




interface FastEthernet0/0
 ip address 202.100.1.10 255.255.255.0




ip route 0.0.0.0 0.0.0.0 202.100.1.1






 


 






Redistributed default route配置


 


 






R1#


router eigrp 100
 

redistribute static

 network 10.1.1.1 0.0.0.0
 no auto-summary







 


 




验证




 














#R2#show 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 10.1.1.1 to network 0.0.0.0

     10.0.0.0/24 is subnetted, 1 subnets
C       10.1.1.0 is directly connected, FastEthernet0/0


D*EX 0.0.0.0/0 [170/307200] via 10.1.1.1, 00:17:42, FastEthernet0/0



#







 


 




Default route By using ip summary-address command配置




 








R1#


router eigrp 100
 network 10.1.1.1 0.0.0.0
 no auto-summary




interface FastEthernet1/0
 ip address 10.1.1.1 255.255.255.0
 

ip summary-address eigrp 100 0.0.0.0 0.0.0.0 5




 


 




验证




 








R2#show 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 10.1.1.1 to network 0.0.0.0

     10.0.0.0/24 is subnetted, 1 subnets
C       10.1.1.0 is directly connected, FastEthernet0/0


D* 0.0.0.0/0 [90/284160] via 10.1.1.1, 00:00:05, FastEthernet0/0




 


 




Default route by using ip default-network command配置






    

  • 

    The EIGRP default route can be created with the ip default-network network-number command. The classful destination network.
    

    • 



    

  • 

    the network must either be an EIGRP-derived network in the routing table or be generated using a static route, which has been redistributed into EIGRP
    

    • 

  • 

    the ip default-network command does not benefit router R1 directly.
    

    • 











R1#router eigrp 100
 network 10.1.1.1 0.0.0.0
 network 202.100.1.0
 no auto-summary



ip default-network 202.100.1.0

ip route 0.0.0.0 0.0.0.0 202.100.1.10






 


 




验证




 








R2#show 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 10.1.1.1 to network 202.100.1.0

     1.0.0.0/24 is subnetted, 1 subnets
D       1.1.1.0 [90/409600] via 10.1.1.1, 00:04:01, FastEthernet0/0


D* 202.100.1.0/24 [90/307200] via 10.1.1.1, 00:00:14, FastEthernet0/0

     10.0.0.0/24 is subnetted, 1 subnets
C       10.1.1.0 is directly connected, FastEthernet0/0







 


 




Default route with network 0.0.0.0 command配置




if the network 0.0.0.0 command is added to the EIGRP configuration, it redistributes a default route as a result of the ip route 0.0.0.0 0.0.0.0 interface command.








R1#router eigrp 100


 network 1.1.1.1 0.0.0.0
 network 10.1.1.1 0.0.0.0
 

network 0.0.0.0

 no auto-summary



ip route 0.0.0.0 0.0.0.0 FastEthernet0/0




 


 




验证




 








R2#show 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 10.1.1.1 to network 0.0.0.0

     1.0.0.0/24 is subnetted, 1 subnets
D       1.1.1.0 [90/409600] via 10.1.1.1, 00:10:37, FastEthernet0/0
D    202.100.1.0/24 [90/307200] via 10.1.1.1, 00:00:30, FastEthernet0/0
     10.0.0.0/24 is subnetted, 1 subnets
C       10.1.1.0 is directly connected, FastEthernet0/0


D* 0.0.0.0/0 [90/307200] via 10.1.1.1, 00:00:02, FastEthernet0/0




 




 




 




 




 




 




 






 















            

            
posted @ 
2018-01-09 21:19 
faerl 
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