Users Guide

When you specify the management VRF, the copy operation that is used to transfer files to and from an HTTP server utilizes the VRF

table corresponding to the Management VRF to look up the destination. When you specify a nondefault VRF, the VRF table corresponding

to that nondefault VRF is used to look up the HTTP server.

However, these changes are backward-compatible and do not affect existing behavior; meaning, you can still use the ip http

source- interface command to communicate with a particular interface even if no VRF is configured on that interface

NOTE: If the HTTP service is not VRF-aware, then it uses the global routing table to perform the look-up.

To enable an HTTP client to look up the VRF table corresponding to either management VRF or any nondefault VRF, use the ip http

vrf command in CONFIGURATION mode.

• Configure an HTTP client with a VRF that is used to connect to the HTTP server.

CONFIGURATION MODE

Dell(conf)#ip http vrf {management | <vrf-name>}

Verify Software Images Before Installation

To validate the software image on the flash drive, you can use the MD5 message-digest algorithm or SHA256 Secure Hash Algorithm,

after the image is transferred to the system but before the image is installed. The validation calculates a hash value of the downloaded

image file on system’s flash drive, and, optionally, compares it to a Dell Networking published hash for that file.

The MD5 or SHA256 hash provides a method of validating that you have downloaded the original software. Calculating the hash on the

local image file and comparing the result to the hash published for that file on iSupport provides a high level of confidence that the local

copy is exactly the same as the published software image. This validation procedure, and the verify {md5 | sha256} command to

support it, prevents the installation of corrupted or modified images.

The verify {md5 | sha256} command calculates and displays the hash of any file on the specified local flash drive. You can

compare the displayed hash against the appropriate hash published on iSupport. Optionally, you can include the published hash in the

verify {md5 | sha256} command, which displays whether it matches the calculated hash of the indicated file.

To validate a software image:

1 Download Dell Networking OS software image file from the iSupport page to the local (FTP or TFTP) server. The published hash for

that file displays next to the software image file on the iSupport page.

2 Go on to the Dell Networking system and copy the software image to the flash drive, using the copy command.

3 Run the verify {md5 | sha256} [ flash://]img-file [hash-value] command. For example, verify sha256

flash://FTOS-SE-9.5.0.0.bin

4 Compare the generated hash value to the expected hash value published on the iSupport page.

To validate the software image on the flash drive after the image is transferred to the system, but before you install the image, use the

verify {md5 | sha256} [ flash://]img-file [hash-value] command in EXEC mode.

• md5: MD5 message-digest algorithm

• sha256: SHA256 Secure Hash Algorithm

• flash: (Optional) Specifies the flash drive. The default uses the flash drive. You can enter the image file name.

• hash-value: (Optional). Specify the relevant hash published on iSupport.

• img-file: Enter the name of the Dell Networking software image file to validate

Examples: Without Entering the Hash Value for Verification

Getting Started