How to connect Cisco SF 300 to Vigor Draytek 3900

Hari Nguyen · ‎10-04-2017

Dear all !

I have problem when trunk cisco SF 300 to router Draytek Vigor 3900 . My Network as bellow image :

At SF 300 I created Vlans VLAN 250 :10.0.0.0 VLAN 10 :10.0.10.0 VLAN 30 : 10.0.30.0 and VLAN 300 : 192.168.200.0 .In case VLAN 300 used trunk to Router Vigor 3900 (IP 192.168.200.254) .I created route on SF 300 0.0.0.0 0.0.0.0 192.168.200.254 .But when i connect SF 300 to Vigor 3900 All Vlan SF 300 can not ping to Draytek 3900 .Pls help me solve this problem .Thanks so much !

This is my config on SF 300 :

ip domain name SERVER-DATA
ip name-server 10.0.0.254
ip telnet server
!
interface vlan 1
no ip address dhcp
!
interface vlan 10
name XNK
ip address 10.0.10.1 255.255.255.0
ip dhcp relay enable
!
interface vlan 20
name L1-UP
ip address 10.0.20.1 255.255.255.0
ip dhcp relay enable
!

interface vlan 300
name Route
ip address 192.168.200.1 255.255.255.0
!

interface gigabitethernet 1
switchport mode access
switchport access vlan 300

!
ip route 0.0.0.0 0.0.0.0 192.168.200.254

Seb Rupik · ‎10-05-2017

Hi there,

If your diagram is correct (and the Vigor is configured as such), then Gi1 need to be configured as a trunk interface:

!
int gi1
  switchport trunk allowed vlan add 300
  switchport mode trunk
!

cheers,

Seb.

Hari Nguyen · ‎10-05-2017

Dear Seb !

Thanks for your help ! I will try it !

Georg Pauwen · ‎10-05-2017

Hello,

I don't think this is going to work. Your SF300 is in Layer 3 mode, which essentially makes it a router. Your Draytek is a router as well, so you will need to confiigure a layer 3 link between both devices, or set the SF300 to layer 2 mode, create the VLAN interfaces on the Vigor, and then configure a trunk link.

In order to create a routable interface on the SF300, check page 274 of the attached user guide:

https://www.cisco.com/c/dam/en/us/td/docs/switches/lan/csbms/sf30x_sg30x/administration_guide/78-19308-01.pdf

Hari Nguyen · ‎10-05-2017

thanks for your help ! i will try !