R3204P16-HP Load Balancing Module Network Management Configuration Guide-6PW101
Table Of Contents
- Title page
- Contents
- Interface management configuration
- IP addressing configuration
- MAC address table configuration
- Layer 2 forwarding configuration
- Layer 2 forwarding overview
- Configuring general Layer 2 forwarding
- Configuring inline Layer 2 forwarding
- Configuring inter-VLAN Layer 2 forwarding
- Forward-type inline Layer 2 forwarding configuration example
- Blackhole-type inline Layer 2 forwarding configuration example
- Inter-VLAN Layer 2 forwarding configuration example
- VLAN configuration
- ARP configuration
- Gratuitous ARP configuration
- Proxy ARP configuration
- Layer 3 forwarding configuration
- NAT configuration
- Overview
- Configuring a NAT policy in the web interface
- Configuring NAT in the CLIs
- Configuration guidelines
- ALG configuration
- Static route configuration
- RIP configuration
- OSPF configuration
- BGP configuration
- Policy-based routing configuration
- Route displaying
- DNS configuration
- Overview
- Configuring DNS on the web interface
- Configuring DNS in the CLIs
- Troubleshooting IPv4 DNS configuration
- Support and other resources
- Index
14
To do… Use the command…
Remarks
Enter system view system-view —
Create a loopback interface and
enter loopback interface view
interface loopback
interface-number
—
Set a description for the loopback
interface
description text
Optional
By default, the description of a loopback
interface is interface name Interface.
Shut down the loopback interface shutdown
Optional
By default, a loopback interface is up.
CAUTION:
• The subnet mask of the IP address assigned to a loopback interface can only be 32 bits in length.
• You can configure settings such as IP addresses and IP routes on loopback interfaces.
Configuring the null interface
A null interface is a completely software-based logical interface, and is always up. However, you cannot
use it to forward data packets or configure an IP address or link layer protocol on it. With a null interface
specified as the next hop of a static route to a specific network segment, any packets routed to the
network segment are dropped. The null interface provides you a simpler way to filter packets than ACL.
You can filter uninteresting traffic by transmitting it to a null interface instead of applying an ACL.
For example, by executing the ip route-static 92.101.0.0 255.255.0.0 null 0 command (which configures
a static route leading to null interface 0), you can have all the packets destined to the network segment
92.101.0.0/16 discarded.
Only one null interface, interface Null 0, is supported on your device. You cannot remove or create a null
interface.
Follow these steps to enter null interface view:
To do… Use the command…
Remarks
Enter system view system-view —
Enter null interface view
interface null 0
Required
Interface Null 0 is the default null interface on your
device. It cannot be manually created or removed.
Set a description for the
null interface
description text
Optional
By default, the description of a null interface is
interface name Interface.
Displaying and maintaining loopback and null interfaces
To do… Use the command…
Remarks
Display information about loopback
interfaces
display interface loopback
[ interface-number ]
Available in any view
Display information about the null
interface
display interface null [ 0 ] Available in any view