Network administration

This page has information about network administration for the DataScale® SN30 rack.

  • Pointers to third-party documents for the network devices.

  • Instructions for changing passwords for the network devices.

  • Shows examples for the DataScale SN30 rack IP address assignments for the management, access, and data networks, as described in the DataScale hardware installation. The actual IP addresses depend on the subnets and host IP addresses in the Pre-Delivery Site Survey document that your company provided before delivery and installation of the DataScale SN30 rack.

In a single-node DataScale deployment, an amber light appears on port 16 of the QFX5130. This is expected behavior for this switch.

1. Network device administration

Most users do not configure the serial console server and the Juniper access switch. This topic discusses only tasks that you’re likely to perform and includes sample IP addresses. For more information:

1.1. Change default passwords for switches

SambaNova highly recommends that you change the default passwords at first login.

This section gives instruction for changing passwords on switches. Change the default password for other components as well. See Default Passwords.

Change password for the Juniper EX series access switch and QFX5130 data switch:

  1. Run the following command:

    $ ssh root@<Juniper_switch_IP_address>
root@:RE:0% cli
root> configure
root# set system root-authentication plain-text-password
root# commit

  2. Log out of the switch by using the exit command 3 times (exit config mode, exit operational mode, exit the Linux CLI)

  3. Log back in with the new password.

Lantronix SLC8000 serial console server:

Run the following command:

$ ssh sysadmin@<Lantronix_switch_IP_address>
> set localusers password sysadmin

1.2. Patch releases for network devices

SambaNova provides a periodic patch release for these network devices. You can download these patches from the SambaNova ext-infra-patch repository. See KB article #1062 "Listing and downloading available SN30 rack firmware" for details.

Patch release notes explain any steps that differ from the standard steps described in the specific product administration documentation.

2. IP address assignments for the access and management network

The management and access network share the same 1GbE Switch but, depending on the customer requirements, they can be the same network or two separate networks separated by VLAN. In the table below, the example IP addresses assume that the customer chose to merge the access and management networks into the same network.

Table 1 shows examples for the access and management network IP address assignments for components such as the BMC (baseboard management controller), the switch equipment, and the PDUs in the DataScale SN30 rack.

The information the Example IP address (10.0.1.0/24) column assume a customer who provided a 10.0.1.0/24 subnet. The IP address range is starting at .16 in the last octet because some IPs are reserved for SambaNova usage. The addresses include placeholders for customer networking infrastructure like gateway IP.

Table 1. Access network IP address assignments
Example IP address (10.0.1.0/24) Component System #

10.0.1.1-4 Reserved for customer infra

-

-

10.0.1.5-15 Reserved for SambaNova

-

-

10.0.1.16

Serial console server

-

10.0.1.17

Access/Mgmt switch

-

10.0.1.18

Data switch

-

10.0.1.19

PDU 1

-

10.0.1.20

PDU 2

-

10.0.1.21

PDU 3

-

10.0.1.22

PDU 4

-

10.0.1.23

SN30-H-1 OS (eth0)

System 1

10.0.1.24

SN30-H-1 BMC

System 1

10.0.1.25

SN30-H-1-XRDU0 BMC

System 1

10.0.1.26

SN30-H-1-XRDU1 BMC

System 1

10.0.1.27

SN30-H-1-XRDU2 BMC

System 1

10.0.1.28

SN30-H-1-XRDU3 BMC

System 1

10.0.1.29

SN30-H-2 OS (eth0)

System 2

10.0.1.30

SN30-H-2 BMC

System 2

10.0.1.31

SN30-H-2-XRDU0 BMC

System 2

10.0.1.32

SN30-H-2-XRDU1 BMC

System 2

10.0.1.33

SN30-H-2-XRDU2 BMC

System 2

10.0.1.34

SN30-H-2-XRDU3

System 2

x.x.x.255
Broadcast IP address for network

-

-

3. IP address assignments for the data network

Table 2 shows examples for the high-bandwidth data network IP address assignments for the compute components in the DataScale SN30 rack.

The example IP addresses shown in the Example IP address (10.0.1.64/27) column assume a customer who provided a 10.0.1.64/27 subnet.

Table 2. Data network IP address assignments
Example IP address (10.0.1.64/27) Component System #

x.x.x.1-4
Reserved for customer infra.

-

-

10.0.2.5

SN30-H-1 snhni0

System 1

10.0.2.6

SN30-H-2 snhni0

System 2

10.0.2.31
Broadcast IP address for network

-

-