Hp Procurve Serial Console Connection
HP ProCurve Switch 2400M HP J4122A HP ProCurve Management and Configuration Guide serial, for direct console connection.
I recently bought an HP Procurve 2650 J4899A off ebay and it came out without a serial cable. So I also purchased a null modem serial cable rs232 to connect to it Assuming this is the right one. I have plugged it into a box running debian and have been struggling to connect to it. I have tried to connect to it with Minicom and Putty with no luck.
The switch itself starts up no problem, I just seem to be having the issue with connecting to it. In putty I have set all the serial settings correctly with reference to the switches manual ftp://ftp.hp.com/pub/networking/software/j489990001.pdf but I seem to have hit a brick wall. Even though there is no option to set putty s terminal elimination to VT100 I assume it sets/detects it automatically.
Just to note I can not connect to the switch via Telnet or the web interface as it has been reset back to factory settings.
I have hit a brick wall as I do not know what to try next. Do I have the wrong serial cable.
Has anyone one else encountered this same issue.
Hewlett Packard Enterprise HPE The Hyperterminal window remains blank and does not allow me to type anything when I attempt the connection. ProCurve 2626.
Experts Exchange Questions HP ProCurve 420 Access Point Console Connection o establish a console session through the serial port on the HP ProCurve.
HP ProCurve 2610 – Basic Setup using console cable. show how to perform a very basic setup of a HP ProCurve 2610 Layer 2 network switch using a serial to.
Configuring HP Procurve. From max interval between connection attempts in it is possible to select which firmware to use from the serial console.
HP ProCurve Networking Technical support FAQs through the serial port on the HP ProCurve Wireless as the console cable shipped with HP ProCurve.
I am trying to access the console port on a Procurve J4900A 2626 switch in my HP Procurve J4900A 2626 Switch. is comes to what serial connection is on the.
Configuring HP Procurve
This document is intended to provide a quick install of the HP ProCurve 5400 OpenFlow Switch, for those who have never used the switch command-line interface CLI. With the CLI, Pressing . will provide list of available commands and options each have.
Getting Started
Manuals
For general commands, see the main switch manual: 1. The Table of Contents is worth skimming, so you have an idea of what other features are available on the switch.
Console Access
The front serial port provides initial console access; from here, you can add an IP address, to change the firmware image or access the switch CLI.
A USB-to-serial adapter typically works with most systems. The port must be configured to 9600 baud, 8 data bits, 1 stop bit, no parity, no hardware flow control.
For example, with ckermit and a USB-to-serial adapter installed on an Ubuntu machine:
sudo apt-get install ckermit
sudo kermit -l /dev/ttyUSB0
set speed 9600
set carrier-watch off
set flow-control none
set parity none
connect
Minicom may also work.
sudo apt-get install minicom
sudo minicom -s
IP Address
After logging in through the serial port, you ll want to set up an IP address, and copy over any configuration files. If your network uses equivalent switches, ask the network admin for a custom configuration file with site-specific VLANs and security policy.
To display the IP address settings for the switch:
show ip
Consult the manual for changing the IP address, and make sure it s set to the correct VLAN.
ssh or telnet hpsw1
Firmware Flashing
The switch has two firmware banks, primary and secondary.
It is recommended to have a stock firmware image, K_13_49.swi or later, in the. Vanilla firmware images are available from the HP ProCurve switch software website. The OpenFlow-enabled firmware image is, then, copied to the secondary bank. Following instructions are based on this recommendation.
Before replacing a secondary image, boot into primary:
boot system flash primary
Then, copy your firmware over through the methods below.
Finally, reboot into the new secondary firmware image:
boot system flash secondary
SCP Flashing
This is the easiest/fastest option. For this to work, the SSH server on the switch must be enabled.
SSH-based flash:
scp /path/to/image root switch-ip:/os/secondary
Allow a minute or two for the connection to timeout, and the ssh session to finish cleanly.
ore info
TFTP Flashing
One option is to put the firmware on a TFTP server accessible from the switch. To do this, install the tftpd package, and add the default tftp location to /etc/inetd.conf, and start the tftpd server.
To flash the Openflow-enabled firmware:
copy tftp flash tftp_server_ip K_14_XX_opfl_0_9.swi secondary
USB Flashing
Another faster options is to flash the firmware via USB. Copy the firmware to the top level of the USB drive, insert it into the switch, then run:
copy usb flash secondary
Common Configuration
Think of OpenFlow as a feature that can be enabled or disabled on a specific VLAN. Each VLAN can have a unique instance of OpenFlow, connecting to a different controller. The first step is to create a VLAN and assign some ports to that VLAN. The default VLAN is 1; s can be anything between 2 and 4095. Note that any switch changes require that you be in config mode.
VLAN Configuration
Enter the configuration mode required to make any changes. :
config
Display the currently defined VLANs:
show vlan
Display the configuration and ports of a specific VLAN:
show vlan
Create a VLAN:
vlan name openflow
Delete a VLAN:
no vlan
Add port s to the VLAN:
vlan untagged
Restore default VLAN for port s :
vlan 1 untagged
Remove VLAN from port s must be tied to another VLAN :
Most commands accept a single port, comma-separated list, or dash-delimited range. Examples of :
A1
A1,A2,A3
A1-B2 covers A1..A24,B1..B2 assuming 24-port linecards
Openflow Configuration required
Once you ve set up a VLAN, you need to enable and configure an OpenFlow instance on that VLAN.
Show the set of configured OpenFlow instances:
show openflow
Enter the VLAN for the instance you d like to configure:
vlan
Show the Openflow configuration, including configurable state, controller connectivity, and switch MAC addr:
show openflow
Set the controller string 6633 is NOX s default port :
openflow controller tcp::
Enable/disable Openflow:
openflow enable/disable
OpenFlow Configuration optional
Reducing the maximum backoff interval can be useful for tests, where you want all switches to connect quickly to the controller. For a deployment, a larger backoff value makes sense, so that the network and controller are not flooded with requests for new control connections. Set backoff max interval between connection attempts in second, 1-60 :
openflow backoff
The rate limit for Openflow s hardware path Kbps per linecard
openflow hw-rate
The packet rate limit for Openflow s software path packets/sec per line card.
openflow sw-rate
Optionally, you can add a passive listening port, useful for pulling info from dpctl while NOX is running. This feature currently has no security protections. To add a passive listening port:
openflow listener ptcp:
Show current OpenFlow firmware revision:
show openflow version
Other Commands
Show current firmware revision:
show version
Show memory and CPU usage info
show system
Show configuration:
show running-config
Prevent unwanted packets highly recommended :
lldp admin-status dataports disable
no spanning-tree
Show LLDP/spanning tree configuration:
show lldp config
show spanning-tree
Reboot:
reload
Save configuration:
write memory
Crash Recovery
At boot, it is possible to select which firmware to use from the serial console 9600 baud.
If you corrupt the primary flash, say, by a botched SCP download, and the switch tries to reboot into that corrupted image, you ll need to replace the script on the switch.
Remote Debugging
Remote Console Access
If you have an HP in a closet and no PC there, or nearby, a nice solution that enables remote debug is to combine a Cat5-to-USB extender with a USB-to-serial adapter. We have this set up in the wiring closet next to the FLASH lab. The following components work:
USB-toCat5 extender 40
USB-to-serial adapter 20 :
Mini gender changer 4 :
The limit is 150 feet of Cat5e cable.
dpctl
The HP supports a passive listening port per OpenFlow instance. This is super-useful when you want to debug an individual switch without going through the controller.
Add a listener port:
openflow listener ptcp:6633
Then use dpctl. Examples:
dpctl dump-tables tcp::
dpctl dump-flows tcp::
dpctl add-flow tcp:: in_port 104 actions output:98
If you use 6633 as the passive port, the OpenFlow Wireshark plugin will display the messages by default.
Capabilities
The HP now supports hardware forwarding. According to HP engineers, specifying following 7-tuples for the actions forward to port, drop and normal can enable hardware forwarding:
TCP/IP 5-tuple src ip, dst ip, nw-prot, src-port, dst-port
incoming physical port
vlan number set to openflow s vlan number
Thus, if the MAC Ethertype has to be IPv4 and the VLAN is the Openflow VLAN, other fields can be exact match or wildcard. We can wildcard 2 fields of the 10 tuples, the MAC SA and the MAC DA, i.e. we pretend they don t exist.
Consequently, if you send a full 10 tuple exact match with both MAC SA and MAC DA specified as exact match, it will go to HW.
Need help setting up an HP Procurve 2650 switch via serial using Linux.
