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3675
Views
5
Helpful
17
Replies

VLAN DHCP, some not working

m.yildiz
Level 1
Level 1

Dear Community,

 

i have the following issues,

C800 series router, 6 vlans, 4 vlans work perfectly, giving out dhcp leases, internet and so on.

But Vlan 50 and 60 no giving out dhcp adresses.

 

see attached show running-config

ena
C897#show running-config
Building configuration...

Current configuration : 4235 bytes
!
version 15.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname C897
!
boot-start-marker
boot system flash bootflash:c800-universalk9-mz.SPA.159-3.M2.bin
boot-end-marker
!
!
enable secret 5 $1$69R8$ppwDJj5IMK0ewSH.kHIPT.
!
no aaa new-model
!
!
!
ip dhcp excluded-address 192.168.10.1 192.168.10.99
ip dhcp excluded-address 10.10.10.1 10.10.10.99
ip dhcp excluded-address 20.20.20.1 20.20.20.99
ip dhcp excluded-address 30.30.30.1 30.30.30.99
ip dhcp excluded-address 40.40.40.1 40.40.40.99
ip dhcp excluded-address 50.50.50.1 50.50.50.99
ip dhcp excluded-address 60.60.60.1 60.60.60.99
!
ip dhcp pool vlan1
network 192.168.10.0 255.255.255.0
default-router 192.168.1.1
dns-server 192.168.1.1
lease 0 1
!
ip dhcp pool vlan10
network 10.10.10.0 255.255.255.0
default-router 10.10.10.1
dns-server 192.168.1.1
lease 0 1
!
ip dhcp pool vlan20
network 20.20.20.0 255.255.255.0
default-router 20.20.20.1
dns-server 192.168.1.1
lease 0 1
!
ip dhcp pool vlan30
network 30.30.30.0 255.255.255.0
default-router 20.20.20.1
dns-server 192.168.1.1
lease 0 1
!
ip dhcp pool vlan40
network 40.0.0.0 255.0.0.0
default-router 40.40.40.1
dns-server 192.168.1.1
lease 0 1
!
ip dhcp pool vlan50
network 50.50.50.0 255.255.255.0
default-router 50.50.50.1
dns-server 192.168.1.1
lease 0 1
!
ip dhcp pool vlan60
network 60.60.60.0 255.255.255.0
default-router 60.60.60.1
dns-server 192.168.1.1
lease 0 1
!
!
!
ip cef
no ipv6 cef
multilink bundle-name authenticated


cts logging verbose
license udi pid C897VA-K9 sn FCZ2012902F
!
username Cisco privilege 15 secret 5 $1$0cBV$U.RL9goycpWEAtCRR5O8c.
!
!
controller VDSL 0
!

!
interface ATM0
no ip address
shutdown
no atm ilmi-keepalive
!
interface BRI0
no ip address
encapsulation hdlc
shutdown
isdn termination multidrop
!
interface Ethernet0
no ip address
shutdown
!
interface GigabitEthernet0
switchport mode trunk
no ip address
!
interface GigabitEthernet1
switchport mode trunk
no ip address
!
interface GigabitEthernet2
switchport mode trunk
no ip address
!
interface GigabitEthernet3
switchport mode trunk
no ip address
!
interface GigabitEthernet4
switchport mode trunk
no ip address
!
interface GigabitEthernet5
switchport mode trunk
no ip address
!
interface GigabitEthernet6
switchport mode trunk
no ip address
!
interface GigabitEthernet7
switchport mode trunk
no ip address
!
interface GigabitEthernet8
ip address dhcp
ip nat outside
ip virtual-reassembly in
duplex auto
speed auto
!
interface Vlan1
ip address 192.168.10.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
!
interface Vlan10
ip address 10.10.10.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
!
interface Vlan20
ip address 20.20.20.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
!
interface Vlan30
ip address 30.30.30.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
!
interface Vlan40
ip address 40.40.40.1 255.0.0.0
ip nat inside
ip virtual-reassembly in
!
interface Vlan50
ip address 50.50.50.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
!
interface Vlan60
ip address 60.60.60.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
!
ip forward-protocol nd
ip http server
ip http authentication local
no ip http secure-server
!
!
ip nat inside source list 100 interface GigabitEthernet8 overload
!
!
access-list 100 permit ip 192.168.10.0 0.0.0.255 any
access-list 100 permit ip 10.10.10.0 0.0.0.255 any
access-list 100 permit ip 20.20.20.0 0.0.0.255 any
access-list 100 permit ip 30.30.30.0 0.0.0.255 any
access-list 100 permit ip 40.0.0.0 0.255.255.255 any
access-list 100 permit ip 50.50.50.0 0.0.0.255 any
access-list 100 permit ip 60.60.60.0 0.0.0.255 any
!
control-plane
!
!
mgcp behavior rsip-range tgcp-only
mgcp behavior comedia-role none
mgcp behavior comedia-check-media-src disable
mgcp behavior comedia-sdp-force disable
!
mgcp profile default
!
!
vstack
!
line con 0
no modem enable
line aux 0
line vty 0 4
login local
transport input telnet
line vty 5 15
login local
transport input telnet
!
scheduler allocate 20000 1000
!
!
!
end

Can anyone help me figure out the issue?

thanks for help

 

17 Replies 17

Hello Rick


@Richard Burts wrote:

The static default route does not have anything to do with DHCP. But the original config that was posted did not have any default route and without a default route you would not have any access to outside.


Would expect dhcp of the wan interface provide a default however this would have an admin of 254, hence why I suggested a more specific static default


Please rate and mark as an accepted solution if you have found any of the information provided useful.
This then could assist others on these forums to find a valuable answer and broadens the community’s global network.

Kind Regards
Paul

Hello Paul

 

Agree with your point.

HTH

Rick

m.yildiz
Level 1
Level 1

Hello,

 

Now working for past 24h without any issues.

vlan 30, i corrected dns server too, it was working anyway.

thanks for all the support.

stay safe!

thanks again

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