Cisco Switch Not PINGing Cisco Router

Paki · ‎11-22-2016

Hi there !!!

I am getting ready for CCNP voice & I am facing some issues. I am using GNS3 for practicing in lab environment. It is a very simple lab but I am not getting the issue resolved.

Following is my scenario & devices I am using:

Cisco Router: 3725

Cisco Switch (for VLANs): 3725 (NM-16ESW)

IOS: 3700 Software (C3725-ADVENTERPRISEK9-M), Version 12.4(15)T7

Voice VLAN: 10

Data VLAN: 20

Problem Statement Switch & Router, both are not PING(ing) each other. Speed & Duplex is set at "auto".

Router Configs

ip dhcp excluded-address 192.168.10.1 192.168.10.10
ip dhcp excluded-address 192.168.20.1 192.168.20.10
!
ip dhcp pool voice
network 192.168.10.0 255.255.255.0
default-router 192.168.10.1
lease infinite
!
ip dhcp pool data
network 192.168.20.0 255.255.255.0
default-router 192.168.20.1
lease infinite

interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/0.10
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet1/0
no ip address
duplex auto
speed auto
!
interface FastEthernet1/0.10
encapsulation dot1Q 10
ip address 192.168.10.1 255.255.255.0
!
interface FastEthernet1/0.20
encapsulation dot1Q 20
ip address 192.168.20.1 255.255.255.0
!
router rip
version 2
network 192.168.10.0
network 192.168.20.0
no auto-summary

telephony-service
max-ephones 2
max-dn 10
ip source-address 192.168.10.1 port 2000
auto assign 1 to 2
max-conferences 8 gain -6
transfer-system full-consult
create cnf-files version-stamp 7960 Nov 22 2016 13:08:13

Switch Configs

interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet1/0
switchport mode trunk
!
interface FastEthernet1/1
switchport access vlan 20
switchport trunk native vlan 20
switchport voice vlan 10
!
interface FastEthernet1/2
switchport access vlan 20
switchport trunk native vlan 20
switchport voice vlan 10

!
interface Vlan1
no ip address
!
interface Vlan10
ip address 192.168.10.2 255.255.255.0
!
interface Vlan20
ip address 192.168.20.2 255.255.255.0

Assistance required.

An early response will be highly appreciated.

Richard Burts · ‎11-22-2016

It is not so clear how you are connecting things in this lab. It appears that you are treating the switch as a standalone switch and are connecting switch FastEth1/0 as a trunk to router FastEth1/0. Is this correct?

But 3725 (NM-16ESW) is not a stand alone switch but is a module to go in a router and would communicate with its router via the backplane.

HTH

Rick

HTH

Rick