ā12-09-2013 06:29 AM - edited ā03-11-2019 08:14 PM
Here is my asa 5505 configuration and at bottom i am pasting cisco 3760 configuration, I am having trunking problem and seen other people having the same issue but no solution.
Problem: when i connect any device on Switch 3760 port 1 which is trunked i cannot communicate with niether vlan.
I have tried device with both static vlan configuration
192.168.1.99 (vlan 2)
172.168.1.99 (vlan 8)
if i change port 1 to access mode or define native vlan it work with one vlan.
interface 5 of Cisco ASA is connected with interface 25 (uplink) on Cisco Switch
!
interface Ethernet0/5
switchport trunk allowed vlan 1-10
switchport mode trunk
!
interface GigabitEthernet1/0/25
description **UPLINK**
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1-10
switchport mode trunk
!
On port 1 of cisco Switch i am creating trunk
!
interface GigabitEthernet1/0/1
description **LAN**
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1-10
switchport mode trunk
no logging event link-status
spanning-tree portfast
!
CISCO ASA Config i have configure the following vlans
interface Vlan2
nameif inside
security-level 100
ip address 192.168.1.1 255.255.255.0
interface Vlan8
description Server VLAN
nameif Internal_LAN
security-level 90
ip address 172.168.1.1 255.255.255.0
!
interface Ethernet0/0
switchport access vlan 2
--------------------------------------------
on Cisco 3760 i have configure the following vlan.
v
!
vlan 2
name inside
!
vlan 8
name Internal_LAN
!
interface Null0
no ip unreachables
!
Message was edited by: macboy
ā12-09-2013 11:14 AM
Hello,
I can see many people have visited the post but there isn't any reply.
I think this is because of the following:
The configurations are long and most people dont want to read it. Try adding only relevant configuration to the issue.
The problem description is not clear. You mention trunking problem but what exactly is the problem? Can you ping from switch to ASA? Is any Vlan information being passed or they are all failing. Try to be as much specific as possible.
Which port of the switch connects to the ASA?
Using portfast on a trunk (interface GigabitEthernet1/0/1) is not recommended.
Regards,
Felipe.
Remember to rate useful posts.
ā12-09-2013 11:38 AM
i have reduce the configuration
ā12-09-2013 11:58 AM
What device are you connecting to port 1 on the switch?
Seems like that device is either not tagging or not configured as trunk.
Regards,
Felipe.
Remember to rate useful posts.
ā12-09-2013 12:32 PM
I tried connecting windows server and my laptop.
ā12-09-2013 12:46 PM
As Felippe said, is the device connected to the gi0/1 port configured to tag traffic ie. you can't just setup the switch port to be a trunk, the device itself needs to be configured to trunk as well.
Jon
ā12-09-2013 01:00 PM
Yes, is configure to be trunked as well.
ā12-09-2013 01:00 PM
Servers and laptops I dont think are able to tag traffic, therefore you need to configure the port as access.
A trunk port can only be connected to another trunk port.
Let us know if you have questions.
Regards,
Felipe.
Remember to rate useful posts.
ā12-09-2013 01:06 PM
I found one article which seems to be my problem. what do thing about this post i am going to give a try to this.
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