Starlink on Cisco C921-4P

[Nicolas74]

Hi all,

Need some help to setup correctly my c921-4P to use Starlink as internet accès connected on my Wan Port.

I can't acces to Internet, Starling is on Bypass mode.

My conf. is:

############################################################################

interface GigabitEthernet0
switchport access vlan 3
switchport trunk native vlan 3
switchport mode trunk
no ip address
!
interface GigabitEthernet1
switchport access vlan 4
switchport trunk native vlan 4
switchport mode trunk
no ip address
!
interface GigabitEthernet2
switchport access vlan 5
switchport trunk native vlan 5
switchport mode trunk
no ip address
!
interface GigabitEthernet3
switchport access vlan 6
switchport trunk native vlan 6
switchport mode trunk
no ip address
!
interface GigabitEthernet4
ip address dhcp
ip nat outside
ip virtual-reassembly in
duplex auto
speed auto
!
interface GigabitEthernet5
no ip address
shutdown
duplex auto
speed auto
!
interface Vlan1
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
!
interface Vlan3
ip address 192.168.30.3 255.255.255.0
ip nat inside
ip virtual-reassembly in
!
interface Vlan4
ip address 192.168.40.3 255.255.255.0
ip nat inside
ip virtual-reassembly in
!
interface Vlan5
ip address 192.168.50.3 255.255.255.0
ip nat inside
ip virtual-reassembly in
!
interface Vlan6
ip address 192.168.60.3 255.255.255.0
ip nat inside
ip virtual-reassembly in
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!!
ip nat inside source list SAEM interface GigabitEthernet4 overload
ip route 0.0.0.0 0.0.0.0 GigabitEthernet4 dhcp
!
ip access-list standard SAEM
permit 192.168.50.0 0.0.0.255
!
!!
control-plane
!
banner motd ^C****ACCES AU ROUTEUR STARLINK***^C
!
line con 0
line vty 0 4
login local
transport input ssh
!
scheduler allocate 20000 1000
!
end

############################################################################

Thanks a lot for your help

Nico

[marce1000]

 - Perhaps some of these articles may provide hints : https://community.cisco.com/t5/routing/cisco-1841-and-starlink-need-help/td-p/4614683 and https://www.reddit.com/r/Starlink/comments/lbyusc/how_to_configure_starlink_and_cisco_rv325_dual/

 M.

[Nicolas74]

Thks M.

But i've already consult these articles but no solution.

To complet my post:

I reach 8.8.8.8 or google.fr from C921P and my laptop but not internet
from Edge, Chrome (maybe no dns resolution or www acces).

Regards,

[marce1000]

 - Strange  , what error do you get in the browser(s) ?

 M.

[Nicolas74]

no specific error just a "ERR_CONNECTION-CLOSED"

[pieterh]

where do you connect your laptop ?

>>>
ip nat inside source list SAEM interface GigabitEthernet4 overload
ip route 0.0.0.0 0.0.0.0 GigabitEthernet4 dhcp
!
ip access-list standard SAEM
permit 192.168.50.0 0.0.0.255
<<<

-->> only vlan-5's addresses are selected for NAT to the internet
if you want internet for the other vlan's you need to include these for NAT

[Nicolas74]

Hi,

My Laptop is in Vlan Ip address 192.168.50.203

i 'm just testing on this Vlan5.

Regard,

[Nicolas74]

 

[pieterh]

so my suggestion was not helpfull, 
you also tried multiple browsers: "from Edge, Chrome (maybe no dns resolution or www acces)."
so retrieve network settings and check DNS resolution
- on windows pc "ipconfig /all"
- on linux "ifconfig -a"
- (both) "nslookup maps.google.com"

[Nicolas74]

np
Yes tried on mulitple browsers  and i confirm you there is no dns resolution.
Nslookup  google.com
Server; dns.google
Address: 8.8.8.8
Dns request  Time out

[pieterh]

check with your ISP if they allow a third party DNS server! (google)
it may be they only allow their own DNS server(s) instead

[Georg Pauwen]

Hello,

I have not followed the entire thread, but try and add a DHCP pool to your router for Vlan 50, then set your clients to obtain their addresses through DHCP:

ip dhcp pool VLAN50

Network 192.168.50.0 255.255.255.0

default-router 192.168.50.3

dns-server 8.8.8.8

[Nicolas74]

Hello Georg,

Thx for your help, i'm going to setup a dhcp pool on for Vlan50 and will come back with result. 

[Nicolas74]

Hi Georg,

Same problem in DHCP.

[Georg Pauwen]

Hello,

not good, obviously. Looking at the configuration of the switched ports, what is actually connected to these ports, since you configured them as trunks ? What if you just make them access ports ?

interface GigabitEthernet2
switchport access vlan 5