Supported Platforms
Example: Configuring Static MAC Bypass of Authentication on an EX Series Switch
To allow devices to access your LAN through 802.1X-configured interfaces without authentication, you can configure a static MAC bypass list on the EX Series switch. The static MAC bypass list, also known as the exclusion list, specifies MAC addresses that are allowed on the switch without a request to an authentication server.
You can use static MAC bypass of authentication to allow connection for devices that are not 802.1X-enabled, such as printers. If a host's MAC address is compared and matched against the static MAC address list, the nonresponsive host is authenticated and an interface opened for it.
This example describes how to configure static MAC bypass of authentication for two printers:
Requirements
This example uses the following hardware and software components:
- Junos OS Release 9.0 or later for EX Series switches
- One EX Series switch acting as an authenticator port access entity (PAE). The ports on the authenticator PAE form a control gate that blocks all traffic to and from supplicants until they are authenticated.
Before you configure static MAC authentication, be sure you have:
- Performed basic bridging and VLAN configuration on the
switch. See the documentation that describes setting up basic bridging
and a VLAN for your switch. If you are using a switch that supports
the Enhanced Layer 2 Software (ELS) configuration style, see Example: Setting Up Basic Bridging and a VLAN for an EX Series Switch. For all other switches, see Example: Setting Up Basic Bridging and a VLAN for an EX Series Switch.
For more about ELS, see: Getting Started with Enhanced Layer 2 Software
- Specified the RADIUS server connections and configured an access profile on the switch. See Example: Connecting a RADIUS Server for 802.1X to an EX Series Switch.
Overview and Topology
To permit printers access to the LAN, add them to the static MAC bypass list. The MAC addresses on this list are permitted access without authentication from the RADIUS server.
Figure 1 shows the two printers connected to the EX4200.
Figure 1: Topology for Static MAC Authentication Configuration
The interfaces shown in Table 1 will be configured for static MAC authentication.
Table 1: Components of the Static MAC Authentication Configuration Topology
| Property | Settings |
|---|---|
Switch hardware | EX4200, 24 Gigabit Ethernet ports: 8 PoE ports (ge-0/0/0 through ge-0/0/23) |
VLAN name | default |
Connections to integrated printer/fax/copier machines (no PoE required) | ge-0/0/19, MAC address 00:04:0f:fd:ac:fe |
The printer with the MAC address 00:04:0f:fd:ac:fe is connected to access interface ge-0/0/19. A second printer with the MAC address 00:04:ae:cd:23:5f is connected to access interface ge-0/0/20. Both printers will be added to the static list and bypass 802.1X authentication.
Configuration
CLI Quick Configuration
To quickly configure static MAC authentication, copy the following commands and paste them into the switch terminal window:
[edit]
set protocols
dot1x authenticator static [00:04:0f:fd:ac:fe 00:04:ae:cd:23:5f]
set protocols dot1x authenticator interface
all supplicant multiple
set protocols dot1x authenticator authenticaton-profile-name profile1Step-by-Step Procedure
Configure static MAC authentication:
- Configure MAC addresses 00:04:0f:fd:ac:fe and 00:04:ae:cd:23:5f as static MAC addresses:
[edit protocols]
user@switch# set dot1x authenticator static [00:04:0f:fd:ac:fe 00:04:ae:cd:23:5f] - Configure the 802.1X authentication method:
[edit protocols]
user@switch# set dot1x authenticator interface all supplicant multiple - Configure the authentication profile name (access profile
name) to use for authentication:
[edit protocols]
user@switch# set dot1x authenticator authentication-profile-name profile1
Note: Access profile configuration is required only for 802.1X clients, not for static MAC clients.
Results
Display the results of the configuration:
Verification
To confirm that the configuration is working properly, perform these tasks:
Verifying Static MAC Bypass of Authentication
Purpose
Verify that the MAC address for both printers is configured and associated with the correct interfaces.
Action
Use the operational mode command:
user@switch> show dot1x static-mac-addressMAC address VLAN-Assignment Interface 00:04:0f:fd:ac:fe default ge-0/0/19.0 00:04:ae:cd:23:5f default ge-0/0/20.0
Meaning
The output field MAC address shows the MAC addresses of the two printers.
The output field Interface shows that the MAC address 00:04:0f:fd:ac:fe can connect to the LAN through interface ge-0/0/19.0 and that the MAC address 00:04:ae:cd:23:5f can connect to the LAN through interface ge-0/0/20.0.
