Buy or Renew
Buy or Renew
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 
cancel
Create a new article
15620
Views
5
Helpful
0
Comments

Error message "%SVCLC-5-FWTRUNK: Firewalled VLANs configured on trunks" is received in Catalyst 6500 Series Switches with Firewall Services Module (FWSM) running Cisco IOS software

TCC_2
Level 10
Level 10

‎06-22-2009 05:36 PM - edited ‎03-01-2019 04:12 PM

Core issue

This message means one or more secure VLANs belong to both secured and ordinary trunks. This configuration may create security holes in secure VLANs.

This is a simple warning message and cosmetic in nature. It tells you that you have trunked VLANs defined in a firewall vlan-group. This happens when you are running failover across modules.

This message was designed in the very early phases of the FWSM development.

Resolution

Change the trunk or the secure VLAN configuration so that they do not overlap.

Enter either the switchport trunk allowed vlan command to change the trunk configuration or the firewall vlan-group command to change the secure VLAN configuration.

For more information, refer to Configuring the Switch for the Firewall Services Module

Labels:
Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Customers Also Viewed These Support Documents