The Crucial Blog - Archive
Configuring a Range of Ports on a Cisco Switch or Router
You can use the following to configure a range of ports:
interface range FastEthernet 0/15 - 48
<commands here>
exit
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Filed under: cisco by — aaron @ 1:40 am
How to view current configuration on a Cisco Pix 520-UR Firewall
First console into the switch, then do the following:
firewall> enable
Password: ************
firewall# configure terminal
firewall(config)# wr term
Building configuration…
: Saved
:
PIX Version 5.0(2)
nameif ethernet0 outside security0
nameif ethernet1 inside security100
nameif ethernet2 pix/intf2 security10
….
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Filed under: Uncategorized by — aaron @ 1:11 am
Accessing a Cisco Switch or Router via Serial Port on Linux Using Minicom
If you need to access a Cisco swith or router on Linux (Redhat, CentOS, Debian, etc) then install minicom, and do the following.
Firstly you can check which serial ports on your computer are available:
dmesg | grep tty
ttyS0 at I/O 0×3f8 (irq = 4) is a 16550A
ttyS1 at I/O 0×2f8 (irq = 3) is a 16550A
Then run minicom:
minicom /dev/ttyS0
Type:
Ctrl + A Z
Then type ‘o’ (the letter, not number) and select ‘Serial port setup’ to configure minicom. Here is a sample configuration of what you want your configuration to look like:
A - Serial Device : /dev/ttyS0
B - Lockfile Location : /var/lock
C - Callin Program :
D - Callout Program :
E - Bps/Par/Bits : 9600 8N1
F - Hardware Flow Control : Yes
G - Software Flow Control : No
To get to here, please read the following:
Ensure the correct serial port is being utilized by pressing A, the port you will usually be using is /dev/ttyS0
Press E to configure bit rate, then select E again, and then Q and Enter.
Ensure Hardware Flow Control is on, and Software Flow Control is off.
If you are having issues, try exiting and re-opening minicom, or disconnecting and reconnecting your console cable.
Tags: cisco, linux, networkingRelated posts
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Filed under: Uncategorized by — aaron @ 12:25 am