ENSGRP

Windows 7 802.1q Trunking

breakintheweb — Tue, 21 Feb 2012 15:04:34 +0000

Before you start reading a disclaimer.
This post is network adapter specific. I’m using a Dell E6420 Running Windows 7 with an Intel 82579LM wired adapter.

In lieu of having multiple pc’s to test, I thought it easier to use one workstation for my CCIE training.

My CCIE lab is local which makes this easier. I’m using wireless for my internet connection. My wired connection will be a trunk in to one of my lab switch ports. The wired link will be configured as a trunk which will allow multiple Virtual interfaces with different vlans.

By default, windows 7 uses an automatic interface metric which will usually prefer wired over wireless connections since wired speeds are higher. I want to set the wireless connection metric lower than the wired so my wireless connection is always preferred. This will ensure i don’t lose my internet connection if a gateway is received across the wired connection.

The metric is set under Control Panel\Network and Internet\Network Connections. Right click on your wireless adapter and click properties. Select Internet Protocol Version 4 and click properties. Almost there; now click the advanced button. Uncheck the automatic metric button and type 1 in the box. Here is an image showing the dialog windows.

The wireless metric can be verfied with the cmd command “netsh interface ip show interfaces”

The next step is to set the wired interface to trunking mode. You will need to go under device manager(click start and type “device manager”), under network adapters, double click your wired adapter. Under the adavanced tab you will see the following screen, ensure the Vlan setting is enabled. For my device, both Vlan and priority are set which is fine.

Next, click the vlan tab in the same dialog window. I’m going to enable vlan 6 on this trunk.

Click Okay and you will see a configuring screen. The computer is setting the vlan on the trunk and creating a virtual interface during this configuring screen.

I’m only configuring one vlan here for brevity. You can configure additional vlans. A virtual interface will be created for each vlan.

Going back under “Control Panel\Network and Internet\Network Connections” you will see a new Local Area Connection. This is the interface which represents our newly created Vlan6.

Right click and go to properties. You can see the name Ends with Vlan6.

Now click on configure which will open a new dialog. Click the settings tab and you can see VLAN6 is set for this virtual interface.

The switchport you plugin to will need to be set to trunking mode on. I’m using port 1/0/24 of my wired connection

interface GigabitEthernet1/0/24
switchport trunk encapsulation dot1q
switchport mode trunk
end

Embedded Event Manager and TCL

breakintheweb — Thu, 26 Jan 2012 13:26:54 +0000

Recently ine ran a challenge for EEM INE BLOG

I have yet to here anything from ine so I’m posting my code below.

############################################################################################
# CISCO TCL EEM syslog config autowrite
# Version 0.3
# 1/13/2012
# Justin Guagliata
# Copyright 2012 @ ensgrp.com
#
# Copy the script to Flash and enter the following two commands in config mode
# event manager directory user policy “flash:/”
# event manager policy SYSLOG_CONFIG.tcl
#
############################################################################################

############################################################################################
# Monitor SYSLOG output for the “SYS-5-CONFIG.*” pattern
# run with a low priority and nice
# Set a max execution time of 60 seconds

::cisco::eem::event_register_syslog occurs 1 pattern “SYS-5-CONFIG.*” maxrun 60 queue_priority low nice 1

############################################################################################
# Import the EEM Libraries to use in this TCL scipt

namespace import ::cisco::eem::*
namespace import ::cisco::lib::*

############################################################################################
# Set FTP server

set FTP_SERVER “10.0.0.1″

############################################################################################
# System variables

set ROUTER_NAME [info hostname]
set CUR_TIME_DATE [clock format [clock seconds] -format “%Y-%m-%d-%H%M%S”]

############################################################################################
# EEM – Opens a connection to the CLI

if [catch {cli_open} result] {
error $result $errorInfo
} else {
array set cli1 $result
}

############################################################################################
# EEM – Run CLI Commands

if [catch {cli_exec $cli1(fd) "enable"} result] {
error $result $errorInfo
}

############################################################################################
# Get Last user to change config.

if [catch {cli_exec $cli1(fd) "sh configuration id detail | inc Changed by user"} result] {
error $result $errorInfo
} else {
set cmd_output $result

set prompt [format "(.*\n)(%s)(\$config\[^\n\]*\$)?(#|>)” $ROUTER_NAME]
if [regexp "[set prompt]” $result dummy cmd_output] {
# do nothing, match will be in $cmd_output
} else {
# did not match router prompt so use original output
set cmd_output $result
}

# remove white space from output
set cmd_output [regexp -inline -all -- {\S+} $cmd_output]
# Remove the leading description by stripping the first 17 characters
# this leaves us just the username
set CURRENT_USER [string replace $cmd_output 0 17 ""]
}

############################################################################################
# If CURRENT_USER returns empty we know that the config was last written by this script
# For tacacs enviroments this will be changed to the eem user

if {$CURRENT_USER != “”} {
if [catch {cli_exec $cli1(fd) "config t"} result] {
error $result $errorInfo
}

if [catch {cli_exec $cli1(fd) "file prompt quiet"} result] {
error $result $errorInfo
}

if [catch {cli_exec $cli1(fd) "end"} result] {
error $result $errorInfo
}

if [catch {cli_exec $cli1(fd) "copy running-config tftp://$FTP_SERVER/$ROUTER_NAME.$CUR_TIME_DATE.$CURRENT_USER.working.cfg"} result] {
error $result $errorInfo
}
}
# Close open cli before exit.
if [catch {cli_close $cli1(fd) $cli1(tty_id)} result] {
error $result $errorInfo
} else {
exit 1
}

############################################################################################
# CISCO TCL EEM autowrite
# Version 0.4
# 1/13/2012
# Justin Guagliata
# Copyright 2012 @ ensgrp.com
#
# Copy the script to Flash and enter the following two commands in config mode
# event manager directory user policy “flash:/”
# event manager policy autowrite.tcl
#
############################################################################################

############################################################################################
# Register EEM for the following patterns “wr.*|wr.* mem.*|copy ru.* st.*”
# This policy is run
# Set a max execution time of 60 seconds

::cisco::eem::event_register_cli pattern “wr.*|wr.* mem.*|copy ru.* st.*” sync yes maxrun 60