Appendix D Troubleshooting; Troubleshooting Connections To Smartna-X; Problems With Slow Data Throughput On Copper (Rj) Ports; Connecting With Ipv6 - Network Critical SmartNA-X User Manual

T
ROUBLESHOOTING
D –

Troubleshooting connections to SmartNA-X

A simple ping test can be used to check the SmartNA-X IP address is reachable from the local machine. If DHCP
is enabled, your DHCP server will automatically assign an IP address to SmartNA-X and you should check the
DHCP server active client list for the correct IP to ping. If DHCP is not enabled, you'll need to know the static IP
that has been assigned to SmartNA-X (the default is 192.168.254.100/255.255.255.0) in order to ping it.
If you are unable to reach the SmartNA-X device, try connecting a cable directly to the local machine and setting
the computer's IP to an address on the same subnet. Once you've made a connection, you'll be able to change the
SmartNA-X network address so it is on the correct subnet then reset the computer's IP back to its original IP.
Direct connections can be made via the Management/Network or Console/Serial ports using the appropriate
cables and connection methods. See the
UI, CLI, and locally.
If all else fails, you can try connecting with IPv6 and resetting the IPv4 address after logging in, as described in

"Connecting with IPv6"

Problems with slow data throughput on copper (RJ) ports

Slow data throughput on copper (RJ) ports can be caused by incorrectly set or low port speed, cabling issues, or
duplex mismatching. In general, it's best to leave port communications set to auto-negotiate the correct speed,
duplex mode and MDI settings. This is the default setting for all SmartNA-X copper ports and will work correctly
in the vast majority of cases.
A duplex mismatch will significantly slow down data throughput between link partners. SmartNA-X ports always
use auto-negotiation of duplexing, even when set to full- or half-duplex, and will default to half-duplexing if the
link partner isn't set to auto-duplex. This behavior is specified by IEEE802.3-2008 Section 3: 37.1.4.4 and allows
for connection to legacy devices supporting half-duplex only. Thus, if the link partner is set as full-duplex (not
auto) and the SmartNA-X port is set as full-duplex, the SmartNA-X port will revert to half-duplex, resulting in a
duplex mismatch.
To prevent a duplex mismatch, set all communicating ports to either auto- or half-duplex mode.
Connecting with IPv6
If you forget the IPv4 address that allows you to configure SmartNA-X, you may use the fixed link-local IPv6
address to gain access to the system and reset the IPv4 address. Alternatively, you can connect a PC to the Console/
"Logging in" section on page 21
below.
DRAFT
A
PPENDIX
for information how to log in to the web
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