2015年10月20日 星期二

aironet native vlan vs vlan , band steering

http://itknowledgeexchange.techtarget.com/network-technologies/configuring-multiple-ssids-in-cisco-1250-access-points-series-3/

http://www.netadmin.com.tw/article_content.aspx?sn=1201100001

IEEE 802.1Q協定在VLAN中通常用來連接多個Switch與Router設備,而Cisco的設備在Fast Ethernet和Gigabit Ethernet介面上都支援IEEE 802.1Q協定。基本上,每一個套用802.1Q協定的埠都會被指定成Trunk類型,而所有在Trunk上的埠都隸屬於Native VLAN,雖然預設如此,但管理者還是可以指定到不同的VLAN內。 

Native VLAN是設備上預設的VLAN,一開始拿到Cisco Switch設備時,所有的埠都會被指派到Native VLAN中,因此所有的埠都可以互相通訊,因為都屬於同一個VLAN。 

而Native VLAN有一個作用是,所有沒有被貼上標籤的資料都會被送往這個Native VLAN。每個VLAN都會有一個ID,用來區分各個VLAN,而Native VLAN的預設ID就是VLAN 1。 

還有一點值得注意,只有802.1Q協定才有Native VLAN,ISL並沒有Native VLAN。也因為沒有貼上標籤的資料都會在Native VLAN上遊走,所以Switch設備就不會在Native VLAN上傳遞的資料貼標籤了。 

接著來看下面這個範例,就可以參透Native VLAN的所有觀念。假設現在架設三個VLAN,其VLAN ID分別是VLAN 1、VLAN 2及VLAN 3。其中,VLAN 1是Native VLAN,之間用兩台Cisco Switch設備連接著,而在Cisco Switch中間有一台Hub,如下圖所示。 



其中,IP為10.1.*.*是處於VLAN 1中,而IP為10.2.*.*處於VLAN 2中,IP為10.3.*.*則被分派於VLAN 3之中。 

因為10.1.1.1和10.1.1.3都屬於Native VLAN,所以由10.1.1.1和10.1.1.3互相傳遞的資料都不會被貼上標籤,因此這樣的資料也可以被10.1.1.2收到。 

Band Steering
https://www.google.com.hk/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0CAYQjB1qFQoTCILAg4Oj0cgCFUR7pgodleoDEA&url=http%3A%2F%2Fcommunity.arubanetworks.com%2Ft5%2FUnified-Wired-Wireless-Access%2FDual-Radio-amp-Dual-Band%2Ftd-p%2F66088&psig=AFQjCNFzPPOCfY7LgMbVQm0bClF0k3u8xw&ust=1445438157457669

2015年10月19日 星期一

Excel Template: Configure Aironet access points for enterprise security

http://t.cbsimg.net/i/tr/downloads/home/gou_Aironet_config_worksheet.xls

Finially, finish load firmware by this

http://mrncciew.com/2013/12/13/ap-conversion-using-mode-button/

https://supportforums.cisco.com/document/61936/autonomous-ap-and-bridge-basic-configuration-template

http://www.cisco.com/c/en/us/support/docs/security-vpn/terminal-access-controller-access-control-system-tacacs-/13852-http-1.html#local

Aironet Command list

debug capwap console cli

Copy flash tftp when IOS image is in a folder

http://www.techexams.net/forums/ccna-ccent/7525-copy-flash-tftp-when-ios-image-folder.html

switch#sh flash

Directory of flash:/

2 -rwx 99 Feb 24 2005 11:16:03 -05:00 private-config.text
3 -rwx 8149 Feb 24 2005 11:16:03 -05:00 config.text
4 -rwx 804 Jun 10 2004 18:45:09 -04:00 vlan.dat
6 -rwx 342 Jun 10 2004 11:36:32 -04:00 system_env_vars
24 drwx 192 Jun 10 2004 11:36:23 -04:00 c3550-i5q3l2-mz.121-20.EA2
7 -rwx 18 Jun 10 2004 11:36:32 -04:00 env_vars

15998976 bytes total (8269312 bytes free)

c3550-i5q3l2-mz.121-20.EA2 is the directory that the IOS file is in

This gives you the IOS file name in the directory

switch#cd flash:/c3550-i5q3l2-mz.121-20.EA2
switch#sh flash

Directory of flash:/c3550-i5q3l2-mz.121-20.EA2/

25 drwx 2688 Jun 10 2004 11:34:50 -04:00 html
107 -rwx 4219426 Jun 10 2004 11:36:23 -04:00 c3550-i5q3l2-mz.121-20.EA2.bin
108 -rwx 252 Jun 10 2004 11:36:23 -04:00 info

15998976 bytes total (8269312 bytes free)

Next copy the IOS to the tftp server

switch#copy flash tftp
Source filename [flash:/c3550-i5q3l2-mz.121-20.EA2.bin]? flash:/c3550-i5q3l2-mz.121-20.EA2/c3550-i5q3l2-mz.121-20.EA2.bin
Address or name of remote host []? 10.1.1.1
Destination filename [/c3550-i5q3l2-mz.121-20.EA2/c3550-i5q3l2-mz.121-20.EA2.bin]? c3550-i5q3l2-mz.121-20.EA2.bin

That should complete the copy of the IOS to the tftp server when it is in a directory

2015年10月15日 星期四

.net framework 3.5 offline installer xp


If you are using a localized version of Windows the setup automatically tries to download the language pack for your location.
To bypass the automatic download you can specify English as the installation language by using the following command line:
C:\path\to\installer\dotnetfx35.exe /lang:ENU
After the setup is complete you can download and install the language pack for your location manually.
Links:

2015年10月14日 星期三

Lightweight to Autonomous (vice versa) Conversion…

AP5475.d0f5.2ee7#debug capwap console cli   <- without this line LWAP not accepting the conf t
http://mrncciew.com/2012/10/20/lightweight-to-autonomous-conversion/
Console into the access point & do the following configurations.
AP5475.d0f5.2ee7#sh ip int brief
Interface                  IP-Address      OK? Method Status                Protocol
Dot11Radio0                unassigned      NO  unset  up                    up      
Dot11Radio1                unassigned      NO  unset  up                    up      
GigabitEthernet0           unassigned      YES DHCP   up                  up  
AP5475.d0f5.2ee7#debug capwap console cli   <- without this line LWAP not accepting the conf t
AP5475.d0f5.2ee7#conf t
AP5475.d0f5.2ee7(config)#ip default-gateway 10.10.10.1
AP5475.d0f5.2ee7(config)#int g0
AP5475.d0f5.2ee7(config-if)#ip address 10.10.10.102 255.255.255.0
AP5475.d0f5.2ee7(config-if)#no sh
AP5475.d0f5.2ee7#ping 10.10.10.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.10.1, timeout is 2 seconds: !!!!!

AP5475.d0f5.2ee7#archive download-sw /force-reload /overwrite tftp://10.10.10.1/c1140-k9w7-tar.124-25d.JA.tar

2015年10月9日 星期五

2702 series aironet AIR-CAP2702E part 2

1) what should i do
2) back up current ios image to tftp linkhow to backup
3) restore ios link restore , youtube restore video
ttschwarte85 about a year ago
Give your computer the 10.0.0.1 (subnet 255.255.255.0) ip address. make sure it is on the same network as the access point.
start i.e. tftp_32 and point it to the directory which contains the image file.
on the console type:
set IP_ADDR 10.0.0.2
set NETMASK 255.255.255.0
DEFAULT_ROUTER 10.0.0.1
tftp_init
tar –xtract  tftp://10.0.0.1/ap3g2-k9w7-tar.152-4.JB5.tar flash:
take a nice cup of coffee and wait....