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Saturday, February 22, 2025

packet tracer – IP Telephones Caught on “Configuring CM Listing” Regardless of TFTP and DHCP Setup on Cisco Router


I’ve a community the place IP telephones and PCs are linked to L2 switches, which hook up with a router and L3 switches. The L3 switche hyperlinks to a DHCP server and a router which I need to give out listing numbers. The Telephones get the ip tackle from the dhcp server however then they get caught in “Configuring CM listing”. Did I configuring one thing?

Present Setup:

DHCP:

Server Pool
    Default - 192.10.0.1
    IPv4 - 192.10.0.2
    Subnet - 255.255.255.0
    Begin - 192.10.0.3
Pool 1
    Default - 10.10.0.1
    Subnet - 255.255.255.0
    Begin - 10.10.0.2
    TFTP - 192.10.0.5
Pool 2
    Default - 10.20.0.1
    Subnet - 255.255.255.0
    Begin - 10.20.0.2
    TFTP - 192.10.0.5

TFTP:

Present configuration : 742 bytes
!
model 15.1
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Router
!
ip cef
no ipv6 cef
!
license udi pid CISCO2811/K9 sn FTX1017QSLR-
!
spanning-tree mode pvst
!
interface f0/0
ip tackle 192.10.0.6 255.255.255.252
!
ip classless
!
ip flow-export model 9
!
telephony-service
 max-ephones 10
 max-dn 10
 ip source-address 192.10.0.2 port 2000
 auto assign 1 to 10
!
ephone-dn 1
 quantity 53001
!
line con 0
!
line aux 0
!
line vty 0 4
 login
!
finish

L3 Swap (Connects to the DHCP and router):

!
model 12.2(37)SE1
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Swap
!
ip routing
!
spanning-tree mode pvst
!
interface FastEthernet0/1
 switchport entry vlan 20
 switchport mode entry
!
interface FastEthernet0/2
 switchport entry vlan 30
 switchport mode entry
!
interface GigabitEthernet0/1
 switchport entry vlan 10
 switchport mode entry
!
interface Vlan1
 no ip tackle
 shutdown
!
interface Vlan10
 mac-address 00d0.ff82.7801
 ip tackle 192.168.1.2 255.255.255.252
 ip helper-address 192.10.0.2
!
interface Vlan20
 mac-address 00d0.ff82.7802
 ip tackle 192.10.0.1 255.255.255.252
!
interface Vlan30
 mac-address 00d0.ff82.7803
 ip tackle 192.10.0.5 255.255.255.252
!
ip classless
ip route 10.0.0.0 255.0.0.0 192.168.1.1 
!
ip flow-export model 9
!
!
line con 0
!
line aux 0
!
line vty 0 4
 login
!
finish

L3 Swap (Connects to every community and above L3):

!
model 12.2(37)SE1
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Swap
!
ip routing
!
mls qos
!
spanning-tree mode pvst
!
interface FastEthernet0/1
 switchport entry vlan 20
 switchport mode entry
!
interface FastEthernet0/2
 switchport entry vlan 30
 switchport mode entry
!
interface GigabitEthernet0/1
 switchport entry vlan 10
 switchport mode entry
!
interface Vlan1
 no ip tackle
 shutdown
!
interface Vlan10
 mac-address 0001.42db.1c01
 ip tackle 192.168.1.1 255.255.255.252
!
interface Vlan20
 mac-address 0001.42db.1c02
 ip tackle 192.168.1.5 255.255.255.252
 ip helper-address 192.10.0.2
!
interface Vlan30
 mac-address 0001.42db.1c03
 ip tackle 192.168.1.9 255.255.255.252
 ip helper-address 192.10.0.2
!
interface Vlan40
 mac-address 0001.42db.1c04
 no ip tackle
!
ip classless
ip route 10.10.0.0 255.255.255.0 192.168.1.6 
ip route 10.20.0.0 255.255.255.0 192.168.1.10 
ip route 192.10.0.0 255.255.255.0 192.168.1.2 
!
ip flow-export model 9
!
line con 0
!
line aux 0
!
line vty 0 4
 login
!
finish

Router:

model 15.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Router
!
no ip cef
no ipv6 cef
!
spanning-tree mode pvst
!
interface GigabitEthernet0/0/0
 ip tackle 192.168.1.6 255.255.255.252
 duplex auto
 velocity auto
!
interface GigabitEthernet0/0/1
 ip tackle 10.10.0.1 255.255.255.0
 ip helper-address 192.10.0.2
 duplex auto
 velocity auto
!
ip classless
!
ip route 192.10.0.0 255.255.255.0 192.168.1.5 
!
ip flow-export model 9
!
line con 0
!
line aux 0
!
line vty 0 4
 login
!
finish

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