Having an issue adding network to eigrp
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04-23-2015 12:46 PM - edited 03-07-2019 11:42 PM
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#
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04-24-2015 12:50 PM
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.)
