Technology

Networker’s 2007

Wednesday, August 1st, 2007

We just got back from Networker’s 2007. Had some fun, it was nice to get away from the day to day stuff and catch up with the guys.
Album is here.

Cisco to AD auth

Tuesday, July 3rd, 2007

Here’s yet another article from Scott. This one is regarding authentication of IOS 12.2 to Active Directory. This is definitely a much cheaper route to go, than Cisco’s ACS server or other methods.
Article Here.

VMWare + Teaming + VLAN’s

Friday, May 25th, 2007

Scott is probably one of the smartest people I know and has published a great article on his blog about how to get ESX Server and a Cisco 3560 to play nicely and optimally. blog.scottlowe.org

PIX SSH Key Initialize

Thursday, May 3rd, 2007

ca zeroize rsa
ca gen rsa key 512
show ca mypubkey rsa
ca save all
ssh 0 0 outside
ssh timeout 60

Config change logging

Wednesday, May 2nd, 2007

Here’s some handy commands to log changes to your switches and routers via the local log and syslog:
archive
log config
logging enable
logging size 200
hidekeys
notify syslog

To view it back:
show archive log config provisioning– this actually parses the command into a config that can be copied and pasted in.

Cisco Basic Commands

Wednesday, May 2nd, 2007

Here’s some basic commands that every Cisco Engineer should know. However, they are so basic, that they are often overlooked:
Disable DNS Lookup
no ip domain-lookup
——————————-
Disable Switches/ Routers from being rude
line con 0
logging synchronous
If you are in the middle of typing something, the device will echo your command back to you [...]

Cisco’s VOIP Implementation

Wednesday, May 2nd, 2007

Here’s a link to a pretty daunting PDF that Cisco put out about their own IPT implementation. Reader beware, this is definately not for the faint of heart.
http://www.cisco.com/web/about/ciscoitatwork/downloads/ciscoitatwork/pdf/cisco_ip_telephony.pdf

CallManager on Non-MCS Hardware

Wednesday, May 2nd, 2007

This is a set of instructions that someone had posted to install CallManager on hardware other than their “certified” equipment for testing.
Step 1: Download a Windows utility called FDIMAGE.EXE. You can find this on pretty much any UNIX/ Linux site.
Step 2: Insert the CallManager Hardware Detect CD-ROM into the system
Step 3: Insert a blank [...]

Helpful Spanning-Tree Commands

Wednesday, May 2nd, 2007

Here’s a few commands that are helpful if you are configuring numerous ports for hosts.
spanning-tree portfast default
This command automatically sets any port configured as an access port (non-trunking) to the correct mode.
switchport host
switchport mode will be set to access
spanning-tree portfast will be enabled
channel group will be disabled

Interface Description

Wednesday, May 2nd, 2007

Found this handy command within Cisco docs. It especially comes in handy on bloated 6500’s, however, it doesn’t matter if you don’t put descriptions on your interfaces and vlan’s.
show interface description
or
sh int desc