In the below example I will configure HRSP for VLAN 34 with a subnet of 10.204.34.0/24

Cisco Catalyst 6500 Series Switch Configuration

Step 1 – Create VLAN 34 in Cisco Catalyst Switch and assign an IP Address

MBGF-DAC-6500-BB01(config)#interface vlan 34

MBGF-DAC-6500-BB01(config-if)#ip address 10.204.34.3 255.255.255.0

Step 2 – Configure HSRP group id, priority and timers, my active switch will be Cisco 6500 Switch due to its priority

MBGF-DAC-6500-BB01(config-if)# standby 34 ip 10.204.34.1

MBGF-DAC-6500-BB01(config-if)# standby 34 timers 1 3

MBGF-DAC-6500-BB01(config-if)# standby 34 priority 150

MBGF-DAC-6500-BB01(config-if)# standby 34 preempt

Cisco Nexus 7000 Series Switch Configuration

Step 1 – Create VLAN 34 in Cisco Nexus Switch and assign an IP Address

VDC-Admin-AG01-MB-1256-002(config)# interface vlan 34

VDC-Admin-AG01-MB-1256-002(config-if)# ip address 10.204.34.2/24

Step 2 – Configure HSRP group id, priority and timers , Nexus will be in standby mode

VDC-Admin-AG01-MB-1256-002(config-if)#hsrp 34

VDC-Admin-AG01-MB-1256-002(config-if-hsrp)# priority 110

VDC-Admin-AG01-MB-1256-002(config-if-hsrp)# timers 1 3

VDC-Admin-AG01-MB-1256-002(config-if-hsrp)# ip 10.204.34.1

Verify the HSRP States

Cisco Catalyst 6500 Switch Status

MBGF-DAC-6500-BB01:1#sho standby brief

P indicates configured to preempt.

|

Interface   Grp Prio P State    Active          Standby         Virtual IP

Vl34        34  150  P Init     local           10.204.34.3         10.204.34.1

MBGF-DAC-6500-BB01:1#

Nexus 7000 Series Switch HSRP Status

VDC-Admin-AG01-MB-1256-002# sho hsrp group 34

Vlan34 – Group 34 (HSRP-V1) (IPv4)

Local state is Standby, priority 110 (Cfged 110)

Forwarding threshold(for vPC), lower: 1 upper: 110

Hellotime 1 sec, holdtime 3 sec

Next hello sent in 0.179000 sec(s)

Virtual IP address is 10.204.34.1 (Cfged)

Active router is 10.204.34.2

Standby router is local

Virtual mac address is 0000.0c07.ac22 (Default MAC)

2 state changes, last state change 2d18h

IP redundancy name is hsrp-Vlan34-34 (default)

VDC-Admin-AG01-MB-1256-002#

Configuring HRSP is a quite a simple and if you are facing any problems configuring you can post your scenario in the comments area of this post.

When an AP is configured as a DHCP server, it can provide IP addresses to an Ethernet-capable PC connected to its Ethernet port or to wireless client devices that associate to the AP.

Following example shows how to configure DHCP service on the Cisco Aironet 1100 and 1200 series Access Points

ITKE-AP01#configure terminal

ITKE-AP01(config)#ip dhcp excluded-address 172.16.0.1 – 172.16.0.50

ITKE-AP01(config)#ip dhcp pool ITKE

ITKE-AP01(dhcp-config)# network 172.16.0.0 255.255.255.0

ITKE-AP01(dhcp-config)#lease 20

ITKE-AP01(dhcp-config)#default-router 172.16.0.1

ITKE-AP01(dhcp-config)#end

In my last post we looked at how to fix the corrupted IOS in a Cisco 1250 Wireless Access Point, the other way of recovering the corrupted IOS is by again by using a solar winds TFTP server, but in this procedure the access point loads itself the image file from the TFTP server. In order do so follow the below mentioned steps.

Step 1

Configure the PC with Solar Winds TFTP server with a class A Static IP Address range of 10.0.0.2 to 10.0.0.30.

Step 2

Make sure that the PC with the solar winds TFTF server contains the Cisco 1250 Wireless Access Point IOS image file (such as c1250-k9w7-tar.124-21a.JA1 in the Solar Winds TFTP server folder) and the TFTP server is activated.

Step 3

Rename the Cisco 1250 Wireless Access Point IOS image file in the solar winds TFTP server folder to the default image name –c1250-k9w7-tar.default for a Cisco 1250 Wireless Access Point.

Step 4

Connect the PC with solar winds TFTF server to the Cisco 1250 Access point with a  Category 6or Cat5 Ethernet cable (straight cable).

Step 5

Disconnect power from the Cisco 1250 Access point.

Step 6

Press and hold the MODE button while you reconnect power to the Cisco 1250 Access point.

Step 7

 Hold the MODE button until the status LED turns red (approximately 20 to 30 seconds), and release the MODE button until the console indicates

Button is pressed; wait for button to be released

Once you release the button you will see the Cisco 1250 Access Point starts downloading the default IOS image from Solar wind TFTP sever as shown below

Step 8

Wait until the Cisco 1250 access point reboots as indicated by all LEDs turning green followed by the Status LED blinking green.

Step 9

After the Cisco 1250 access point reboots, reconfigure the access point using the Command Line Interface (CLI) or GUI.

Also check demonstrated video to recover the IOS in Cisco 1250 Access Point.

 [kml_flashembed movie="http://www.youtube.com/v/ixv_Gmzpvwk" width="425" height="350" wmode="transparent" /]

In my previous post  I was talking about how to fix the corrupted IOS in Cisco 1250 Series Wireless Access Point. Now in this series let’s see how to fix the solution to fix the corrupted IOS in Cisco 1250 Series Wireless Access Point.

In the previous post we know that whenever an IOS is missing in the Cisco Wireless Access Point you will get the following error

The system is unable to boot automatically because there are no bootable files.

Followed by the promt

ap:

There are two ways to fix this problem, in this post I will show you how to fix the problem   by transferring the IOS file to the Cisco Access Point using a TFTP server.

Whenever you boot you IOS corrupted Cisco Access Point and when you get following error at the command prompt

ap:

Connect the corrupted access point to any Cisco Catalyst Switch and also connect your PC with a solar winds TFTP server installed to the same switch with the same subnet. In the following example we are configuring the IP address for the PC with Solar winds TFTP server and corrupted access point as follows

Follow the below mentioned steps

Step 1:

Assign the ip address, netmask and default gateway to the IOS corrupted access point by using set command as shown below.

ap:set IP_ADDR 10.0.0.10

ap:set NETMASK 255.255.248.0

ap:set DEFAULT_ROUTER 10.0.0.10

Step 2:

Initialized the TFTP server in the Cisco Access point by entering “tftp_init” command

ap: tftp_init

 Step 3:

Download the IOS image file for Cisco 1250 Series Access Point from Cisco Web Site (CCO id is required) and remove the file extension (.tar) as shown and copy the file to solar winds TFTP server directory.

Step 4:

Make sure that the solar winds TFTF server is started and the downloaded the IOS image file is placed in the TFTP server directory.

Step 5:

Extract the IOS file downloaded into the Cisco Access Point by using “tar -xtract” command to inflate the image file from your TFTP Server.

ap:  tar –xtract  tftp://10.0.0.8/c1250-k9w7-tar.124-10b.JDA3 flash:

Step 6:

Once the whole IOS file is extracted the set the boot path in your IOS corrupted Cisco Access Point as shown below

ap:  set BOOT flash: c1250-k9w7-mx.124-10b.JDA3/ c1250-k9w7-mx.124-10b.JDA3

Step 7:

Then you boot your Cisco Wireless Access Point by using a “boot’ command.

ap:  boot

Once the Cisco Wireless Access Point is booted you will see no errors and its working fine. I have also uploaded the video as well which might help you to recover the IOS in a Cisco 1250 Access Point. Same procedure can be applied on other Cisco Access Points as well with proper IOS files. 

 [kml_flashembed movie="http://www.youtube.com/v/NfSZeq4idHM" width="425" height="350" wmode="transparent" /]

These days we are upgrading the IOS for all Cisco 1250 Series Wireless Access Points. So far we don’t have any wireless management software or control cards. We are force to upgrade an IOS of each and every individual access point.

One of our aspiring, vibrant colleagues deleted the flash contents of the Cisco 1250 Series Access Point accidentally. He tried to repair but he had no clue what to do. He tried to find out a way but it was fruitless. After the IOS was deleted in the Cisco 1250 Series Access Point it was not booting and he was getting the following error.

The system is unable to boot automatically because there are no bootable files.

In upcoming post I will post a solution to how to upload an IOS in the corrupted Cisco 1250 Access Point.

[kml_flashembed movie="http://www.youtube.com/v/EMG8UosnSU0" width="425" height="350" wmode="transparent" /]

Most people do not realize starting an IOS version 12.3 (4) T and higher an “archive” and “archive config” commands were introduced by Cisco Systems.

The main advantage of advantage of an “archive” command is to have incremental backups of your Cisco Router or Switches configurations and for some reasons if you have blowup with the configuration then using the this feature you can retrieve the old configuration file into your Cisco router or switch.

The “archive config” command allows you to save Cisco IOS configurations in the configuration archive using a standard location and filename prefix that is automatically appended with an incremental version number (and optional timestamp) as each consecutive file is saved.
Once the maximum number of file saved in the archive, the oldest file will be automatically replaced by the next file.

The “show archive” command displays information for all configuration files saved in the Cisco IOS configuration archive.
In this example, we will save the archive configuration files on the flash memory; however, you can also store the configuration files remotely using such protocols as FTP, HTTP, HTTPS,RCP, SCP, and TFTP.
By using following set of commands we can enable archive feature in a Cisco Router or a Cisco Switch provided the IOS version is either 12.3 (4) T or higher . In this example, the location and filename prefix is specified as disk0: itkebackup

ITKE-AS0 (config)#archive

ITKE-AS01(config-archive)#path flash:itkebackup

To save the current running configuration in the configuration archive use the “archive config” command as shown below

ITKE-AS01# archive config

The “show archive” command displays information of the files saved in the configuration archive as shown in the following example:

ITKE-AS01#show archive

         There are currently 3 archive configurations saved.

         The next archive file will be named flash: itkebackup -3

         Archive # Name

         0

         1 flash: itkebackup -1

         2 flash: itkebackup -2 <- Most Recent

         3

         4

         5

         6

         7

         8

         9

         10

         11

         12

         13

         14

ITKE-AS01#

By using the “configure replace flash” command you can restore the configuration

ITKE-AS01#configure replace flash: itkebackup -2

         This will apply all necessary additions and deletions

         to replace the current running configuration with the

         contents of the specified configuration file, which is

         assumed to be a complete configuration, not a partial

         configuration. Enter Y if you are sure you want to proceed. ? [no]: y

         Total number of passes: 0

         Rollback Done

The “archive” command is quite handy to keep the he is great for keeping multiple copies of the running config in an archive.