Reference Guide

VLAN scale profile
When you scale the number of VLANs on a switch, use the VLAN scale profile so that less memory is consumed. Enable the
scale profile before you configure VLANs on the switch. The scale profile globally applies L2 mode on all VLANs you create and
disables L3 transmission. To enable L3 routing traffic on a VLAN, use the mode L3 command.
1. Configure the L2 VLAN scale profile in CONFIGURATION mode.
scale-profile vlan
2. (Optional) Enable L3 routing on a VLAN in INTERFACE VLAN mode.
mode L3
After you upgrade OS10 from an earlier version with configured VLANs, if you configure the VLAN scale profile and enable L3
routing on VLANs, save the configuration and reload the switch to apply the scale profile settings.
Apply VLAN scale profile
OS10(config)# scale-profile vlan
OS10(config)# interface vlan 10
OS10(conf-if-vl-10)# mode L3
Loopback interfaces
A loopback interface is a virtual interface in which the software emulates an interface. Because a loopback interface is not
associated to physical hardware entities, the loopback interface status is not affected by hardware status changes.
Packets routed to a loopback interface are processed locally to the OS10 device. Because this interface is not a physical
interface, you can configure routing protocols on this interface to provide protocol stability. You can place loopback interfaces in
default L3 mode.
● Enter the loopback interface number in CONFIGURATION mode (0 to 16383).
interface loopback number
● Enter the loopback interface number to view the configuration in EXEC mode.
show interface loopback number
● Enter the loopback interface number to delete a loopback interface in CONFIGURATION mode.
no interface loopback number
View loopback interface
OS10# show interface loopback 4
Loopback 4 is up, line protocol is up
Hardware is unknown.
Interface index is 102863300
Internet address is 120.120.120.120/24
Mode of IPv4 Address Assignment : MANUAL
MTU 1532 bytes
Flowcontrol rx false tx false
ARP type: ARPA, ARP Timeout: 240
Last clearing of "show interface" counters : 00:00:11
Queuing strategy : fifo
Input 0 packets, 0 bytes, 0 multicast
Received 0 errors, 0 discarded
Output 0 packets, 0 bytes, 0 multicast
Output 0 errors, Output 0 invalid protocol
Time since last interface status change : 00:00:11
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Interfaces