Configuration Guide User guide

FastIron Configuration Guide 1197

53-1002494-02

Enabling or disabling Layer 2 switching

• PIM

• RIPV1 and V2

• VRRP

• VRRP-E

• VSRP

IP routing is enabled by default on devices running Layer 3 code. All other protocols are disabled,

so you must enable them to configure and use them.

To enable a protocol on a device running full Layer 3 code, enter router at the global CONFIG level,

followed by the protocol to be enabled. The following example shows how to enable OSPF.

Brocade(config)#router ospf

Enabling or disabling Layer 2 switching

By default, Brocade Layer 3 switches support Layer 2 switching. These devices modify the routing

protocols that are not supported on the devices. If you want to disable Layer 2 switching, you can

do so globally or on individual ports, depending on the version of software your device is running.

NOTE

Consult your reseller or Brocade to understand the risks involved before disabling all Layer 2

switching operations.

Configuration notes and feature limitations for

Layer 2 switching

• Enabling or disabling Layer 2 switching is supported in the edge Layer 3 and full Layer 3

software images only.

• FWS EPREM devices support disabling Layer 2 switching at the global CONFIG level only.

• FastIron X Series and Brocade FCX Series devices support disabling Layer 2 switching at the

interface configuration level as well as the global CONFIG level.

• Enabling or disabling Layer 2 switching is not supported on virtual interfaces.

Command syntax for Layer 2 switching

To globally disable Layer 2 switching on a Layer 3 switch, enter commands such as the following.

Brocade(config)#route-only

Brocade(config)#exit

Brocade#write memory

Brocade#reload

To re-enable Layer 2 switching on a Layer 3 switch, enter the following commands.