Configuring Skylight Flex

Configuring Skylight Flex

The basic configuration of Flex involves configuring the IP address, VLAN, and so forth.

The executable comes up with a VLAN already configured. This VLAN is called the default VLAN (VLAN ID = 1). All ports in the switch are members of the default VLAN.

The startup parameters for Skylight Flex, such as the IP address and network mask, are taken from the configuration file, saved as iss.conf, used for restoring the configuration when Skylight Flex is restarted. If the configuration file is not present, the startup parameters are taken from issnvram.txt.

The ports are configured as < interface-type > < slot number >/< port number >.

Examples:

• interface xl-ethernet 0/1
• ports xl-ethernet 0/1-3 untagged xl-ethernet 0/1

The interfaces in Flex are disabled by default. Enable the interfaces that you will require by using the no shutdown command.

Assuming the system contains 3 Ethernet cards:

Your Product(config)# interface xl-ethernet 0/1
Your Product(config-if)# no shutdown
Your Product(config-if)# exit
Your Product(config)# exit
Your Product#

The show interfaces command displays complete information of all available interfaces.

Your Product# show interfaces

The IP address of the default VLAN can be changed using the default ip address command.

Your Product# configure terminal
Your Product(config)# default ip address 20.0.0.1 subnet-mask 255.0.0.0

A new VLAN with VLAN ID 2 can be configured using the following command:

Your Product(config)# vlan 2

Configure Port1, Port2, and Port3 as member ports. Port 1 is specified as an untagged port and Port 2 and Port 3 are set as tagged ports for VLAN 2.

Your Product(config-vlan)# ports xl-ethernet 0/1-3 untagged xl-ethernet 0/1
Your Product(config-vlan)# exit 

However, any untagged packets (packets sent from a PC/host) on any of the ports will only be classified to VLAN1. To ensure that untagged packets get classified onto a specific VLAN, change the port VLAN ID using the following commands:

Your Product(config)# interface xl-ethernet 0/1
Your Product(config-if)# switchport pvid 2
Your Product(config-if)# exit
Your Product(config)# exit

Untagged packets received on Port 1 will now get classified to VLAN2.
The ip address command can be used to configure the IP address of a VLAN interface.

Your Product# configure terminal
Your Product(config)# interface vlan 2
Your Product(config-if)# ip address 30.0.0.1 255.0.0.0

Your Product(config-if)# no shutdown
Your Product(config-if)# exit
Your Product#

The show ip interface vlan < vlan-identifier > command can be used to check if the configuration is successful.

Your Product# show ip interface vlan 2

Configuring Skylight Flex (Metro Specific)

The Skylight Flex executable comes up with a default switch (called default), a default VLAN and the default bridge mode, customer bridge (this is the default bridge mode in the file, issnvram.txt).

The physical interfaces in the target must be mapped to a particular switch. The port will become visible to the Layer 2 modules. Mapping can be executed using the following commands:

Your Product(config)# interface xl-ethernet 0/1
Your Product(config-if)# map switch default
Your Product(config-if)# end

Map the physical ports on the desktop to the identifiers used at the CLI.

At the CLI, the physical interfaces are prefixed with “eth” and numbered from 0 to the maximum number present in the system. For example, if the desktop is populated with 4 ports, they are identified at the CLI as eth0, eth1, eth2 and eth3.

The virtual switches can be created using the following commands:

Your Product(config)# switch cust
Your Product(config-switch)# bridge-mode customer
Your Product(config-switch)# end

Execute the show switch cust command to verify the creation of the virtual switch:

Your Product# show switch cust

A new VLAN can be configured using the following commands:

Your Product(config)# switch default
Your Product(config-switch)# vlan 2
Your Product(config-switch-vlan)# ports xl-ethernet 0/1-3 untagged xl-ethernet 0/1
Your Product(config-switch-vlan)# end

Saving and Restoring the Configuration

The configuration you make can be saved in the Flash and can be restored when the switch is started.

Your Product# write startup-config

When Skylight Flex runs on a Linux PC, the configuration is saved as a iss.conf file and is used for restoring the configuration when Flex is restarted.