HPE FlexNetwork MSR Series Comware 7 Layer 3 - Ip Services Configuration Guides

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• Long static ARP entry—It contains the IP address, MAC address, and one of the following
combinations:
{ VLAN and output interface.
{ Receiving and output interfaces.
A long static ARP entry is directly used for forwarding packets.
• Short static ARP entry—It contains only the IP address and MAC address.
{ If the output interface is a Layer 3 Ethernet interface, the short ARP entry can be directly
used to forward packets.
{ If the output interface is a VLAN interface, the device sends an ARP request whose target IP
address is the IP address in the short entry. If the sender IP and MAC addresses in the
received ARP reply match the short static ARP entry, the device performs the following
operations:
− Adds the interface that received the ARP reply to the short static ARP entry.
− Uses the resolved short static ARP entry to forward IP packets.
To communicate with a host by using a fixed IP-to-MAC mapping, configure a short static ARP entry
on the device. To communicate with a host by using a fixed IP-to-MAC mapping through an interface
in a VLAN, configure a long static ARP entry on the device.
OpenFlow ARP entry
ARP creates OpenFlow ARP entries by learning from the OpenFlow module. An OpenFlow ARP
entry does not age out, and it cannot be updated. It can be overwritten by a static ARP entry. An
OpenFlow ARP entry can be used directly to forward packets. For more information about OpenFlow,
see OpenFlow Configuration Guide.
Rule ARP entry
ARP creates Rule ARP entries by learning from the IPoE, portal, VXLAN, and OVSDB modules. A
Rule ARP entry does not age out, and it cannot be updated. It can be overwritten by a static ARP
entry. A Rule ARP entry can be used directly to forward packets.
For more information about IPoE, see Layer 2—WAN Access Configuration Guide. For more
information about portal, see Security Configuration Guide. For more information about VXLAN and
OVSDB, see VXLAN Configuration Guide.
Command and hardware compatibility
Commands and descriptions for centralized devices apply to the following routers:
• MSR1002-4/1003-8S.
• MSR2003.
• MSR2004-24/2004-48.
• MSR3012/3024/3044/3064.
• MSR954(JH296A/JH297A/JH298A/JH299A/JH373A).
• MSR958(JH300A/JH301A).
Commands and descriptions for distributed devices apply to MSR4060 and MSR4080 routers.
Configuring a static ARP entry
Static ARP entries are effective when the device functions correctly.
A resolved short static ARP entry becomes unresolved upon certain events, for example, when the
resolved output interface goes down, or the corresponding VLAN or VLAN interface is deleted.

HPE FlexNetwork MSR Series Specifications

General

Brand	HPE
Model	FlexNetwork MSR Series
Category	Network Router
Language	English