Having an issue adding network to eigrp

[lolwar001]

I'm doing a class project using a network simulator and am asked to: Design and implement an network for company RoutersCourseMatters.  The names of the department names at this company are Faculty, Staff, and Students.  For security reasons, each department must be isolated from each other's broadcast domain on the network.  The Faculty have 50 end devices that need to be connected to the network.  Staff has 26 end devices and the Students have 100 end devices.  The network spaced provided by the ISP is 192.168.0.0/24.  The dynamic protocol used for this network must be for Cisco-only equipment.  Test each department network with just one end device and ensure full connectivity across the entire network

So we have our network topology setup for the class project(see picture attached). We are using one router for faculty+staff. Faculty has ip/mask of 192.168.0.1/26 and staff is: 192.168.0.65/27. we have a seperate router for students which the IP subnet for students is 192.168.0.150/25. The routers are directly connected and are using ips 192.168.0.98/29 & 192.168.0.100/29 so since the two routers are directly connected on the same subnet they have no issue pinging each other. The problem is pinging hosts from a subnet to hosts on a different subnet. When I try and add ANY 192.168.0.* subnet to eigrp it instead adds 192.168.16.* network. For instance on the faculty/student router if i do a 'router eigrp 1' command followed by 'network 192.168.0.0 0.0.0.63' it shows network 192.168.16.0 has been added to eigrp under show run. here is show run command:

faculty/staff Con0 is now available

Press RETURN to get started!

faculty/staff>en
faculty/staff#show run

Building configuration...

Current configuration : 874 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
!
hostname faculty/staff
!
boot-start-marker
boot-end-marker
!
!
!
!
no aaa new-model
!
!
ip cef
!
!
!
!
!
ip subnet-zero
!
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
  description blank
  ip address 192.168.0.65 255.255.255.224
  no ip directed-broadcast
!
interface FastEthernet0/1
  description link to switch
  ip address 192.168.0.1 255.255.255.192
  no ip directed-broadcast
!
interface Serial0/0/0
  ip address 192.168.20.2 255.255.255.0
  no ip directed-broadcast
  clockrate 2000000
!
interface Serial0/0/1
  no ip address
  no ip directed-broadcast
  shutdown
  clockrate 2000000
!
interface Serial0/1/0
  no ip address
  no ip directed-broadcast
  shutdown
  clockrate 2000000
!
interface Serial0/1/1
  ip address 192.168.0.98 255.255.255.248
  no ip directed-broadcast
!
router eigrp 1
 network 0.0.0.0
 network 192.168.1.1 0.0.0.0
 network 192.168.16.0
 network 192.168.20.0
 no auto-summary
!
ip classless
no ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
!
!
line con 0
line aux 0
line vty 0 4
  login
line vty 5 1180
  login
!
scheduler allocate 20000 1000
!
end

faculty/staff#config t
Enter configuration commands, one per line.  End with CNTL/Z
faculty/staff(config)#router eigrp 1
faculty/staff(config-router)#network 192.168.0.0 0.0.0.63
faculty/staff(config-router)#exit
faculty/staff(config)#exit
faculty/staff#show run

Building configuration...

Current configuration : 874 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
!
hostname faculty/staff
!
boot-start-marker
boot-end-marker
!
!
!
!
no aaa new-model
!
!
ip cef
!
!
!
!
!
ip subnet-zero
!
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
  description blank
  ip address 192.168.0.65 255.255.255.224
  no ip directed-broadcast
!
interface FastEthernet0/1
  description link to switch
  ip address 192.168.0.1 255.255.255.192
  no ip directed-broadcast
!
interface Serial0/0/0
  ip address 192.168.20.2 255.255.255.0
  no ip directed-broadcast
  clockrate 2000000
!
interface Serial0/0/1
  no ip address
  no ip directed-broadcast
  shutdown
  clockrate 2000000
!
interface Serial0/1/0
  no ip address
  no ip directed-broadcast
  shutdown
  clockrate 2000000
!
interface Serial0/1/1
  ip address 192.168.0.98 255.255.255.248
  no ip directed-broadcast
!
router eigrp 1
 network 0.0.0.0
 network 192.168.1.1 0.0.0.0
 network 192.168.16.0
 network 192.168.20.0
 no auto-summary
!
ip classless
no ip http server
no ip http secure-server
!
!
!
!
--More--
project.jpg
   
Reply Reply to Main Discussion

    Cody Robinson
    Cody Robinson
    2:36pm

Here is 'show ip eigrp topology' on staff/faculty router:

faculty/staff Con0 is now available

Press RETURN to get started!

faculty/staff>en
faculty/staff#show ip interface

FastEthernet0/0 is up, line protocol is up
  Internet address is 192.168.0.65/27
  Broadcast address is 255.255.255.255
  Address determined by setup command
  MTU is 1514 bytes
  Helper address is not set
  Directed broadcast forwarding is disabled
  Outgoing access list is not set
  Inbound access list is not set
  Proxy ARP is enabled
  Local Proxy ARP is disabled
  Security level is default
  Split horizon is disabled
  ICMP redirects are always sent
  ICMP unreachables are always sent
  ICMP mask replies are never sent
  IP fast switching is enabled
  IP fast switching on the same interface is enabled
  IP Flow switching is disabled
  IP CEF switching is enabled
  IP CEF Fast switching turbo vector
  IP multicast fast switching is enabled
  IP multicast distributed fast switching is disabled
  IP route-cache flags are Fast, CEF
  Router Discovery is disabled
  IP output packet accounting is disabled
  IP access violation accounting is disabled
  TCP/IP header compression is disabled
  RTP/IP header compression is disabled
  Policy routing is disabled
  Network address translation is disabled
  BGP Policy Mapping is disabled
  WCCP Redirect outbound is disabled
  WCCP Redirect inbound is disabled
  WCCP Redirect exclude is disabled
FastEthernet0/1 is up, line protocol is up
  Internet address is 192.168.0.1/26
  Broadcast address is 255.255.255.255
  Address determined by setup command
  MTU is 1514 bytes
  Helper address is not set
  Directed broadcast forwarding is disabled
  Outgoing access list is not set
  Inbound access list is not set
  Proxy ARP is enabled
  Local Proxy ARP is disabled
  Security level is default
  Split horizon is disabled
  ICMP redirects are always sent
  ICMP unreachables are always sent
  ICMP mask replies are never sent
  IP fast switching is enabled
  IP fast switching on the same interface is enabled
  IP Flow switching is disabled
  IP CEF switching is enabled
  IP CEF Fast switching turbo vector
  IP multicast fast switching is enabled
  IP multicast distributed fast switching is disabled
  IP route-cache flags are Fast, CEF
  Router Discovery is disabled
  IP output packet accounting is disabled
  IP access violation accounting is disabled
  TCP/IP header compression is disabled
  RTP/IP header compression is disabled
  Policy routing is disabled
  Network address translation is disabled
  BGP Policy Mapping is disabled
  WCCP Redirect outbound is disabled
  WCCP Redirect inbound is disabled
  WCCP Redirect exclude is disabled
Serial0/0/0 is down, line protocol is down
  Internet address is 192.168.20.2/24
  Broadcast address is 255.255.255.255
  Address determined by setup command
  MTU is 1514 bytes
  Helper address is not set
  Directed broadcast forwarding is disabled
  Outgoing access list is not set
  Inbound access list is not set
  Proxy ARP is enabled
  Local Proxy ARP is disabled
  Security level is default
  Split horizon is disabled
  ICMP redirects are always sent
  ICMP unreachables are always sent
  ICMP mask replies are never sent
  IP fast switching is enabled
  IP fast switching on the same interface is enabled
  IP Flow switching is disabled
  IP CEF switching is enabled
  IP CEF Fast switching turbo vector
  IP multicast fast switching is enabled
  IP multicast distributed fast switching is disabled
  IP route-cache flags are Fast, CEF
  Router Discovery is disabled
  IP output packet accounting is disabled
  IP access violation accounting is disabled
  TCP/IP header compression is disabled
  RTP/IP header compression is disabled
  Policy routing is disabled
  Network address translation is disabled
  BGP Policy Mapping is disabled
  WCCP Redirect outbound is disabled
  WCCP Redirect inbound is disabled
  WCCP Redirect exclude is disabled
Serial0/0/1 is administratively down, line protocol is down
  Internet protocol processing disabled
Serial0/1/0 is administratively down, line protocol is down
  Internet protocol processing disabled
Serial0/1/1 is up, line protocol is up
  Internet address is 192.168.0.98/29
  Broadcast address is 255.255.255.255
  Address determined by setup command
  MTU is 1514 bytes
  Helper address is not set
  Directed broadcast forwarding is disabled
  Outgoing access list is not set
  Inbound access list is not set
  Proxy ARP is enabled
  Local Proxy ARP is disabled
  Security level is default
  Split horizon is disabled
  ICMP redirects are always sent
  ICMP unreachables are always sent
  ICMP mask replies are never sent
  IP fast switching is enabled
  IP fast switching on the same interface is enabled
  IP Flow switching is disabled
  IP CEF switching is enabled
  IP CEF Fast switching turbo vector
  IP multicast fast switching is enabled
  IP multicast distributed fast switching is disabled
  IP route-cache flags are Fast, CEF
  Router Discovery is disabled
  IP output packet accounting is disabled
  IP access violation accounting is disabled
  TCP/IP header compression is disabled
  RTP/IP header compression is disabled
  Policy routing is disabled
  Network address translation is disabled
  BGP Policy Mapping is disabled
  WCCP Redirect outbound is disabled
  WCCP Redirect inbound is disabled
  WCCP Redirect exclude is disabled

faculty/staff#show ip eigrp ?
  <1-65535>   Autonomous System
  accounting  IP-EIGRP Accounting
  interfaces  IP-EIGRP interfaces
  neighbors   IP-EIGRP neighbors
  topology    IP-EIGRP Topology Table
  traffic     IP-EIGRP Traffic Statistics
  vrf         Select a VPN Routing/Forwarding instance

faculty/staff#show ip eigrp topology
IP-EIGRP Topology Table for AS(1)/ID(192.168.20.2)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status

P 192.168.0.0/26, 1 successors, FD is 2172416
         via Connected, FastEthernet0/1
P 192.168.0.64/27, 1 successors, FD is 2172416
         via Connected, FastEthernet0/0
P 192.168.0.96/29, 1 successors, FD is 2172416
         via Connected, Serial0/1/1
faculty/staff#

    Cody Robinson
    Cody Robinson
    2:37pm

Here is show run on students router:

Students Con0 is now available

Press RETURN to get started!

Students>sh run
            ^
% Invalid input detected at '^' marker.
Students>en
Students#sh run

Building configuration...

Current configuration : 874 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
!
hostname Students
!
boot-start-marker
boot-end-marker
!
!
!
!
no aaa new-model
!
!
ip cef
!
!
!
!
!
ip subnet-zero
!
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
  no ip address
  no ip directed-broadcast
  shutdown
!
interface FastEthernet0/1
  description link to switch
  ip address 192.168.0.150 255.255.255.128
  no ip directed-broadcast
!
interface Serial0/0/0
  ip address 192.168.10.1 255.255.255.0
  no ip directed-broadcast
  clockrate 2000000
!
interface Serial0/0/1
  no ip address
  no ip directed-broadcast
  shutdown
  clockrate 2000000
!
interface Serial0/1/0
  no ip address
  no ip directed-broadcast
  shutdown
  clockrate 2000000
!
interface Serial0/1/1
  ip address 192.168.0.100 255.255.255.248
  no ip directed-broadcast
  clockrate 2000000
!
router eigrp 1
 network 0.0.0.0
 network 192.168.1.1 0.0.0.0
 network 192.168.10.0
!
ip classless
no ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
!
!
line con 0
line aux 0
line vty 0 4
  login
line vty 5 1180
  login
!
scheduler allocate 20000 1000
!
end

Students#

[chlupmichal]

Hello lolwar,

From your setup and description you provided I see some mismatch in IP subneting you calculated.

For instance in your diagram you have networks 192.168.0.0/26 (FACULTY), 192.168.0.64/27 (STAFF), 192.168.0.96/29 (point-to-point link between routers) and 192.168.0.128/25 (STUDENTS).

First, you're wasting IP addresses, because you have unused space between point-to-point link and STUDENTS subnet. It's a good practice, when calculating subnets first calculate the biggest, subnet, then smaller one until the smallest one (usually some point-to-point cross-connects). For more about this see this guide.

Now, the issue I see as the most important is, that you have in your diagram networks as I mentioned above, but into your EIGRP process you're adding completely different subnets (192.168.16.x, 192.168.20.x,...).

I entered following:

STUDENT ROUTER =------------>

router eigrp 1

network 192.168.0.96 0.0.0.7

network 192.168.0.128 0.0.0.127

FACULTY/STAFF ROUTER =------------->

router eigrp 1

network 192.168.0.0 0.0.0.63

network 192.168.0.64 0.0.0.31

network 192.168.0.96 0.0.0.7

And all works just fine, computer's are able to ping each other. Also although it's not necessary, it's good to includes network wildcard mask into the "network" command under EIGRP (or OSPF) configuration.

I hope this will help you (please rate if this is the case. Thanks.)