Routing Issue

[Visauk47]

Hi Guys, 

I am not able to communicate from PC1 to PC2 on a Routed network, Topology attached. 

PC1 is on VLAN21 and PC2 is on VLAN22 , both ports are configured as access ports and allowed VLAN 21 and 22 

Could someone please check and update where is the config error ? 

------------------------------------------

Pbx1 switch Config

hostname pbx1
!
boot-start-marker
boot-end-marker
!

!
ip routing
!
!
ip domain-name Test
vtp domain pbx1
vtp mode transparent
!

spanning-tree vlan 10 priority 4096
auto qos srnd4

!
!
vlan internal allocation policy ascending
!
vlan 10
name PC
!
vlan 21
name Server
!

!
interface Loopback0
ip address 172.16.0.1 255.255.255.255
!
!
interface GigabitEthernet0/9
description *** PC-1 ***
switchport access vlan 21
switchport mode access
spanning-tree portfast edge
!
interface GigabitEthernet0/15
description *** Routed link to es1 ***
no switchport
ip address 172.16.10.1 255.255.255.252
!
interface GigabitEthernet0/16
description *** Trunk link to Ip1 G0/15 ***
no switchport
ip address 172.16.10.10 255.255.255.252
!
interface Vlan1
no ip address
shutdown
!
interface Vlan10
description **** Management IP Address ****
ip address 172.16.1.222 255.255.255.0
!
interface Vlan21
ip address 172.21.20.222 255.255.255.0
!
!
router eigrp 10
network 172.16.0.0
network 172.21.0.0
eigrp stub connected summary
!
ip forward-protocol nd
ip http server
ip http secure-server
!
!
snmp-server community Test
snmp-server location pbx1
snmp-server contact Testing

!
end

--------------------------------

ES1 switch Config

hostname es1
!
!
ip routing
!
!
ip domain-name Test
vtp domain es1
vtp mode transparent
!

!
spanning-tree vlan 20 priority 4096
!
!
vlan internal allocation policy ascending
!
vlan 20
name PC
!
vlan 22
name Servers
!
!
interface Loopback0
ip address 172.16.0.2 255.255.255.0
!
interface GigabitEthernet0/10
switchport access vlan 22
switchport mode access
spanning-tree portfast edge

!
interface GigabitEthernet0/15
description *** Routed link to pbx1 G0/15 ***
no switchport
ip address 172.16.10.2 255.255.255.252
!
interface GigabitEthernet0/16
description *** Routed link to Ip1 G0/16 ***
no switchport
ip address 172.16.10.5 255.255.255.252
!
interface Vlan1
no ip address
shutdown
!
interface Vlan20
ip address 172.16.2.222 255.255.255.0
!
interface Vlan22
ip address 172.21.0.222 255.255.255.0
!
!
router eigrp 10
network 172.16.0.0
network 172.21.0.0
eigrp stub connected static
!
ip forward-protocol nd
ip http server
ip http secure-server
!

!
snmp-server community Test
snmp-server location es1
snmp-server contact Test

!
end

-------------------------------------------

Regards,

VS 

[Harold Ritter]

Hi @Visauk47 ,

You need to add network 172.16.10.0 on both routers to activate EIGRP on the link between the two routers.

router eigrp 10

network 172.16.10.0

Also, according to your diagram PC2 address does match the subnet you configured for VLAN22 (172.21.0.0/24). Make sure to configure PC2 accordingly.

Regards,

[Visauk47]

Hi Harold, 

Router Eigrp 10 

Network 172.16.0.0 is already activated on the link

Do I have to create a new VLAN21 on ES switch ? 

Regards,

Vs

[Harold Ritter · Accepted solution]

Hi @Visauk47 ,

Just make sure that PC2 is configured with an IP address that falls within the subnet configured for VLAN22 (172.21.0.0/24) then.

For instance:

PC2 IP address 172.21.0.35/24

Default gateway: 172.21.0.222

Regards,

[Visauk47]

Hi Harold, 

Thanks, that's what I have done now to make to work  

Regards,

VS

[MHM Cisco World]

please try eigrp no auto summary in each router because you use same parent prefix.