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7.4

EIGRP - how to use "ip default-network" command?

Asked by pseudocyber in Networking Protocols, Network Design & Methodology

Tags: Cisco, routing, eigrp, default-network

Hi Everyone,

I'm studying for my BSCI exam - EIGRP and trying to get the "ip default-network" command to work correctly.

I have three routers in a rectangle, and have added an int l666 interface with an IP of 6.6.6.6/32.  I've included network 6.0.0.0/8 in my EIGRP networks and the other routers are seeing it from EIGRP.  

When I go to add the "ip default-netwok 6.0.0.0" command, to make it the default route and advertise that through eigrp it's not working.  I have tried it several ways, but it just won't work.

Could anyone tell me what I'm doing wrong?

Thanks,

PC 
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Router11#show run
Building configuration...
 
Current configuration : 1562 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router11
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip subnet-zero
!
!
ip host Router13 10.13.0.1
ip host Router4 10.4.0.1
!
!
!
!         
!
!
!
!
!
!
no voice hpi capture buffer
no voice hpi capture destination 
!
!
!
!
!
!
interface Loopback0
 ip address 10.11.0.1 255.255.255.0
!
interface Loopback1
 ip address 10.11.1.1 255.255.255.0
!
interface Loopback2
 ip address 10.11.2.1 255.255.255.0
!         
interface Loopback3
 ip address 10.11.3.1 255.255.255.0
!
interface Loopback4
 ip address 10.11.4.1 255.255.255.0
!
interface Loopback666
 ip address 6.6.6.6 255.255.255.255
!
interface FastEthernet0/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface Serial0/0
 bandwidth 1500
 ip address 192.168.2.1 255.255.255.252
 ip summary-address eigrp 100 10.11.0.0 255.255.248.0 5
 service-module t1 cablelength short 110ft
 service-module t1 clock source internal
!
interface Serial0/1
 bandwidth 1500
 ip address 192.168.1.1 255.255.255.252
 ip summary-address eigrp 100 10.11.0.0 255.255.248.0 5
 ip summary-address eigrp 100 10.11.0.0 255.255.0.0 5
 service-module t1 cablelength short 110ft
 service-module t1 clock source internal
!
router eigrp 100
 network 6.0.0.0
 network 10.11.0.0 0.0.255.255
 network 192.168.0.0 0.0.255.255
 no auto-summary
!
no ip http server
ip classless
ip default-network 6.0.0.0
!
!
access-list 1 permit 10.11.0.0 0.0.8.255
!
!
!
!         
!
!
!
line con 0
line aux 0
line vty 0 4
!
!
!
end
 
Router11#  
Router11#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 not set
 
 *   6.0.0.0/32 is subnetted, 1 subnets
C       6.6.6.6 is directly connected, Loopback666
     10.0.0.0/8 is variably subnetted, 9 subnets, 3 masks
C       10.11.1.0/24 is directly connected, Loopback1
C       10.11.0.0/24 is directly connected, Loopback0
D       10.11.0.0/21 is a summary, 02:13:05, Null0
D       10.11.0.0/16 is a summary, 02:13:05, Null0
C       10.11.3.0/24 is directly connected, Loopback3
C       10.11.2.0/24 is directly connected, Loopback2
C       10.11.4.0/24 is directly connected, Loopback4
D       10.13.0.0/21 [90/2346496] via 192.168.2.2, 02:13:07, Serial0/0
D       10.4.0.0/21 [90/2346496] via 192.168.1.2, 02:13:07, Serial0/1
     192.168.1.0/30 is subnetted, 1 subnets
C       192.168.1.0 is directly connected, Serial0/1
     192.168.2.0/30 is subnetted, 2 subnets
C       192.168.2.0 is directly connected, Serial0/0
D       192.168.2.4 [90/2244096] via 192.168.2.2, 02:13:08, Serial0/0
                    [90/2244096] via 192.168.1.2, 02:13:08, Serial0/1
Router11#show ip eigrp top
IP-EIGRP Topology Table for AS(100)/ID(192.168.2.1)
 
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status 
 
P 6.6.6.6/32, 1 successors, FD is 128256
        via Connected, Loopback666
P 10.11.1.0/24, 1 successors, FD is 128256
        via Connected, Loopback1
P 10.11.0.0/16, 1 successors, FD is 128256
        via Summary (128256/0), Null0
P 10.11.0.0/21, 1 successors, FD is 128256
        via Summary (128256/0), Null0
P 10.11.0.0/24, 1 successors, FD is 128256
        via Connected, Loopback0
P 10.11.3.0/24, 1 successors, FD is 128256
        via Connected, Loopback3
P 10.11.2.0/24, 1 successors, FD is 128256
        via Connected, Loopback2
P 10.11.4.0/24, 1 successors, FD is 128256
        via Connected, Loopback4
P 10.13.0.0/21, 1 successors, FD is 2346496
        via 192.168.2.2 (2346496/128256), Serial0/0
          
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status 
 
        via 192.168.1.2 (2372096/153856), Serial0/1
P 10.4.0.0/21, 1 successors, FD is 2346496
        via 192.168.1.2 (2346496/128256), Serial0/1
        via 192.168.2.2 (2372096/153856), Serial0/0
P 192.168.1.0/30, 1 successors, FD is 2218496
        via Connected, Serial0/1
P 192.168.2.0/30, 1 successors, FD is 2218496
        via Connected, Serial0/0
P 192.168.2.4/30, 2 successors, FD is 2244096
        via 192.168.1.2 (2244096/25856), Serial0/1
        via 192.168.2.2 (2244096/25856), Serial0/0
Router11#
Router11#
Router11#show ip eigrp neigh
IP-EIGRP neighbors for process 100
H   Address                 Interface       Hold Uptime   SRTT   RTO  Q  Seq
                                            (sec)         (ms)       Cnt Num
0   192.168.1.2             Se0/1             14 02:13:25    4   200  0  213
1   192.168.2.2             Se0/0             11 05:58:49    1   200  0  241
Router11#
Router11#show ip proto
Routing Protocol is "eigrp 100"
  Outgoing update filter list for all interfaces is not set
  Incoming update filter list for all interfaces is not set
  Default networks flagged in outgoing updates
  Default networks accepted from incoming updates
  EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
  EIGRP maximum hopcount 100
  EIGRP maximum metric variance 1
  Redistributing: eigrp 100
  EIGRP NSF-aware route hold timer is 240s
  Automatic network summarization is not in effect
  Address Summarization:
    10.11.0.0/21 for Serial0/0, Serial0/1
      Summarizing with metric 128256
    10.11.0.0/16 for Serial0/1
      Summarizing with metric 128256
  Maximum path: 4
  Routing for Networks:
    6.0.0.0
    10.11.0.0/16
    192.168.0.0/16
  Routing Information Sources:
    Gateway         Distance      Last Update
    Gateway         Distance      Last Update
    (this router)         90      02:13:33
    192.168.2.2           90      02:13:33
    192.168.1.2           90      02:13:34
  Distance: internal 90 external 170
 
Router11#
 
 
*************************************************************
 
Router13#show ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
       i - IS-IS, 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
 
     6.0.0.0/32 is subnetted, 1 subnets
D       6.6.6.6 [90/2346496] via 192.168.2.1, 02:14:04, Serial0/0
     10.0.0.0/8 is variably subnetted, 9 subnets, 3 masks
D       10.11.0.0/16 [90/2372096] via 192.168.2.6, 02:14:04, Ethernet0/0
D       10.11.0.0/21 [90/2346496] via 192.168.2.1, 02:14:04, Serial0/0
C       10.13.4.0/24 is directly connected, Loopback4
C       10.13.3.0/24 is directly connected, Loopback3
C       10.13.2.0/24 is directly connected, Loopback2
C       10.13.1.0/24 is directly connected, Loopback1
D       10.13.0.0/21 is a summary, 07:17:03, Null0
C       10.13.0.0/24 is directly connected, Loopback0
D       10.4.0.0/21 [90/153856] via 192.168.2.6, 02:14:06, Ethernet0/0
     192.168.1.0/30 is subnetted, 1 subnets
D       192.168.1.0 [90/2244096] via 192.168.2.6, 02:14:08, Ethernet0/0
     192.168.2.0/30 is subnetted, 2 subnets
C       192.168.2.0 is directly connected, Serial0/0
C       192.168.2.4 is directly connected, Ethernet0/0
Router13#show ip eigrp neigh
IP-EIGRP neighbors for process 100
H   Address                 Interface   Hold Uptime   SRTT   RTO  Q  Seq Type
                                        (sec)         (ms)       Cnt Num
1   192.168.2.6             Et0/0         12 02:14:18  308  1848  0  214   
0   192.168.2.1             Se0/0         10 05:59:37   19   200  0  213   
Router13#show ip eigrp top
IP-EIGRP Topology Table for AS(100)/ID(192.168.2.5)
 
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status 
 
P 6.6.6.6/32, 1 successors, FD is 2346496
         via 192.168.2.1 (2346496/128256), Serial0/0
P 10.11.0.0/16, 1 successors, FD is 2372096
         via 192.168.2.6 (2372096/2346496), Ethernet0/0
P 10.11.0.0/21, 1 successors, FD is 2346496
         via 192.168.2.1 (2346496/128256), Serial0/0
P 10.13.4.0/24, 1 successors, FD is 128256
         via Rconnected (128256/0)
P 10.13.3.0/24, 1 successors, FD is 128256
         via Rconnected (128256/0)
P 10.13.2.0/24, 1 successors, FD is 128256
         via Rconnected (128256/0)
P 10.13.1.0/24, 1 successors, FD is 128256
         via Rconnected (128256/0)
P 10.13.0.0/21, 1 successors, FD is 128256
         via Summary (128256/0), Null0
P 10.13.0.0/24, 1 successors, FD is 128256
         via Rconnected (128256/0)
          
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status 
 
P 10.4.0.0/21, 1 successors, FD is 153856
         via 192.168.2.6 (153856/128256), Ethernet0/0
P 192.168.1.0/30, 1 successors, FD is 2244096
         via 192.168.2.6 (2244096/2218496), Ethernet0/0
         via 192.168.2.1 (2730496/2218496), Serial0/0
P 192.168.2.0/30, 1 successors, FD is 2178560
         via Connected, Serial0/0
P 192.168.2.4/30, 1 successors, FD is 25856
         via Connected, Ethernet0/0
Router13#
 
--------------------------------------------------------------------------------------------------
 
 
Router13#show ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
       i - IS-IS, 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
 
     6.0.0.0/32 is subnetted, 1 subnets
D       6.6.6.6 [90/2346496] via 192.168.2.1, 02:14:04, Serial0/0
     10.0.0.0/8 is variably subnetted, 9 subnets, 3 masks
D       10.11.0.0/16 [90/2372096] via 192.168.2.6, 02:14:04, Ethernet0/0
D       10.11.0.0/21 [90/2346496] via 192.168.2.1, 02:14:04, Serial0/0
C       10.13.4.0/24 is directly connected, Loopback4
C       10.13.3.0/24 is directly connected, Loopback3
C       10.13.2.0/24 is directly connected, Loopback2
C       10.13.1.0/24 is directly connected, Loopback1
D       10.13.0.0/21 is a summary, 07:17:03, Null0
C       10.13.0.0/24 is directly connected, Loopback0
D       10.4.0.0/21 [90/153856] via 192.168.2.6, 02:14:06, Ethernet0/0
     192.168.1.0/30 is subnetted, 1 subnets
D       192.168.1.0 [90/2244096] via 192.168.2.6, 02:14:08, Ethernet0/0
     192.168.2.0/30 is subnetted, 2 subnets
C       192.168.2.0 is directly connected, Serial0/0
C       192.168.2.4 is directly connected, Ethernet0/0
Router13#show ip eigrp neigh
IP-EIGRP neighbors for process 100
H   Address                 Interface   Hold Uptime   SRTT   RTO  Q  Seq Type
                                        (sec)         (ms)       Cnt Num
1   192.168.2.6             Et0/0         12 02:14:18  308  1848  0  214   
0   192.168.2.1             Se0/0         10 05:59:37   19   200  0  213   
Router13#show ip eigrp top
IP-EIGRP Topology Table for AS(100)/ID(192.168.2.5)
 
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status 
 
P 6.6.6.6/32, 1 successors, FD is 2346496
         via 192.168.2.1 (2346496/128256), Serial0/0
P 10.11.0.0/16, 1 successors, FD is 2372096
         via 192.168.2.6 (2372096/2346496), Ethernet0/0
P 10.11.0.0/21, 1 successors, FD is 2346496
         via 192.168.2.1 (2346496/128256), Serial0/0
P 10.13.4.0/24, 1 successors, FD is 128256
         via Rconnected (128256/0)
P 10.13.3.0/24, 1 successors, FD is 128256
         via Rconnected (128256/0)
P 10.13.2.0/24, 1 successors, FD is 128256
         via Rconnected (128256/0)
P 10.13.1.0/24, 1 successors, FD is 128256
         via Rconnected (128256/0)
P 10.13.0.0/21, 1 successors, FD is 128256
         via Summary (128256/0), Null0
P 10.13.0.0/24, 1 successors, FD is 128256
         via Rconnected (128256/0)
          
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status 
 
P 10.4.0.0/21, 1 successors, FD is 153856
         via 192.168.2.6 (153856/128256), Ethernet0/0
P 192.168.1.0/30, 1 successors, FD is 2244096
         via 192.168.2.6 (2244096/2218496), Ethernet0/0
         via 192.168.2.1 (2730496/2218496), Serial0/0
P 192.168.2.0/30, 1 successors, FD is 2178560
         via Connected, Serial0/0
P 192.168.2.4/30, 1 successors, FD is 25856
         via Connected, Ethernet0/0
Router13#
[+][-]05/15/09 05:27 AM, ID: 24394696Accepted Solution

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About this solution

Zones: Networking Protocols, Network Design & Methodology
Tags: Cisco, routing, eigrp, default-network
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Solution Provided By: ksims1129
Participating Experts: 1
Solution Grade: A
 
[+][-]05/14/09 08:23 PM, ID: 24391998Expert Comment

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[+][-]05/15/09 05:22 AM, ID: 24394645Expert Comment

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[+][-]05/15/09 05:25 AM, ID: 24394677Author Comment

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[+][-]05/15/09 05:29 AM, ID: 24394706Author Comment

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

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[+][-]05/19/09 10:52 AM, ID: 24424581Author Comment

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

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20091118-EE-VQP-93 - Hierarchy / EE_QW_3_20080625