Configuring IP IP Forwarding
OmniSwitch AOS Release 8 Network Configuration Guide December 2017 page 15-13
Create a linkagg and then create a VLAN interface and assign the created linkagg as tagged or untagged to
that VLAN.
For example.
• To create VLAN interface and assign linkagg 6 as tagged to that VLAN use the below command:
-> ip interface test address 10.0.0.1/8 vlan 30 rtr-port linkagg 6 tagged
• To create VLAN interface and assign linkagg 7 as untagged to that VLAN use the below command:
-> ip interface test1 address 20.0.0.1/8 vlan 40 rtr-port linkagg 7 untagged
The VLAN associated with the router-port must be a new, unused VLAN. This VLAN is a routing-only
VLAN with a single port or trunk. Configuration to add additional members to this VLAN, or to delete
this VLAN directly using no vlan command is rejected. This vlan can only be deleted by deleting the
associated IP interface using the no form of the ip interface command.
If the IP interface is modified such that it's no longer bound to this VLAN, the corresponding VLAN is
deleted.
Configuring Address Resolution Protocol (ARP)
To send packets on a locally connected network, the switch uses ARP to match the IP address of a device
with its physical (MAC) address. To send a data packet to a device with which it has not previously
communicated, the switch first broadcasts an ARP request packet. The ARP request packet requests the
Ethernet hardware address corresponding to an Internet address. All hosts on the receiving Ethernet
receive the ARP request, but only the host with the specified IP address responds. If present and
functioning, the host with the specified IP address responds with an ARP reply packet containing its
hardware address. The switch receives the ARP reply packet, stores the hardware address in its ARP cache
for future use, and begins exchanging packets with the receiving device.
The switch stores the hardware address in its ARP cache (ARP table). The table contains a listing of IP
addresses and their corresponding translations to MAC addresses. Entries in the table are used to translate
32-bit IP addresses into 48-bit Ethernet or IEEE 802.3 hardware addresses. Dynamic addresses remain in
the table until they time out. You can set this time-out value and you can also manually add or delete
permanent addresses to/from the table.
Adding a Permanent Entry to the ARP Table
As described above, dynamic entries remain in the ARP table for a specified time period before they are
automatically removed. However, you can create a permanent entry in the table.
Use the arp command to add a permanent entry to the ARP table. Enter the IP address of the entry
followed by its physical (MAC) address. For example, to create an entry for IP address 171.11.1.1 with a
corresponding physical address of 00:05:02:c0:7f:11, you would enter:
-> arp 171.11.1.1 00:05:02:c0:7f:11
Configuring a permanent ARP entry with a multicast address is also supported. For example, the
following command creates a permanent multicast ARP entry:
-> arp 2.2.3.40 01:4a:22:03:44:5c
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