# Configuring An-clause

You can use the an-clause functionality to enable support for 1G Electrical SFP 

{% hint style="danger" %}
This feature is only supported on Broadcom platforms
{% endhint %}

#### Reference

<table data-header-hidden><thead><tr><th></th><th></th><th data-hidden></th><th data-hidden></th></tr></thead><tbody><tr><td>Command</td><td>{no} transmit-only cl37</td><td></td><td></td></tr><tr><td>Description</td><td>Auto-Negotiation clause</td><td></td><td></td></tr><tr><td>Parameters</td><td>cl37</td><td></td><td></td></tr><tr><td>Mode</td><td>INTERFACE</td><td></td><td></td></tr></tbody></table>

#### Example

```

pbnoscli# configure terminal 
pbnoscli(config)# interface ethernet Ethernet2/1
pbnoscli(config-if)# an
  an-clause             Auto-Negotiation clause
pbnoscli(config-if)# an-clause cl37
pbnoscli(config-if)# end
```

```
pbnoscli# show running-config 
configure terminal
interface ethernet Ethernet2/1
an-clause cl37
!
interface mgmt
ip address 10.4.4.53/23 gateway 10.4.4.1
!
pbnoscli# 
```