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Subinterfaces, How subinterfaces works, Subinterfaces –26 – Polycom V2IU 4350 User Manual

Page 44: How subinterfaces works –26

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User Manual V

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IU 4350 Converged Network Appliance

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Note: All open web browsers must be closed when you change between

administrative user “root” and read-only “rouser.”

4. Enter a new password. The password must be a minimum of six

characters long.

4. Re-enter the new password to confirm it.

5. Click Submit.

Now when you access the system using this user name (rouser) and password,

all fields are read-only.

Subinterfaces

The Subinterfaces feature allows a system administrator to assign additional

IP addresses to interfaces. These are sometimes referred to as aliases or

loopback interfaces. An additional address may be assigned to the system’s

WAN interface to support, for example, another management IP address.

How Subinterfaces Works

A common use for subinterfaces is forwarding a public subnet. A subinterface

may be created to support a subnet forwarded through the Polycom V

2

IU

4350. When forwarding a subnet through the Polycom V

2

IU 4350, it is

necessary to assign an address for this subnet to the system to act as the

subnet's gateway. To configure forwarding rules, use the Forwarding Rules

submenu under the Firewall configuration link.
When applied to the WAN/Provider interface, these addresses are protected

by the same firewall policy that is applied to the WAN/Provider address.

Several other features in the system automatically create Subinterfaces. VRRP

(if supported) and Static NAT automatically create Subinterfaces.