|
Welcome to
www.howtocisco.com,
an online resource to assist
people who are preparing to be or already are network
engineers. This website provides a place to learn and
share real Cisco troubleshooting network problems. It
contains many valuable articles, cases, tools and
examples of how to configure Cisco PIX/ASA,
Router, Switch, VLAN, VPN and Wireless.
Beginners may
want to check these useful pages first:
·
Configure
Cisco Password
·
General
Configuration
·
Save/Restore
Configuration
·
General
Troubleshooting
·
Useful
Commands
We have a collection of explanations and suggestions on
how to resolve Cisco issues and will continue to add
more.
For those network engineers who would like to share
their
insights, concerns and solutions, they can visit this
forum. Besides Cisco, this network forum is also a place
to discuss the issues of Windows OS, computer network,
Internet access, remote access and wireless.
Forgot
WCS root password: You may try this procedure:
How to copy configuration
of
one AP to another through
WCS: From the WCS GUI, Configure > Access Point >
Copy and Replace AP
HTTP Status 404 - /webacs/welcomeAction.do : We are
running WCS V4 on Windows 2003. We can't access WCS website with this error:
HTTP Status 404
Failed to install WCS 2.2: Situation: The client tries to
install Cisco WCS 2.2 on Windows 2003. It failed to install it.
Can't see Cisco WCS Programs group in Start: This can be
because the user is logged on with a different user account than
the one used to install WCS as a service
Cisco WCS stops running: Here are collections of the
Cisco WCS fails to start up.
How to add a Cisco WLS
Controller to WCS: Go to Configure>Controllers.
How to install license in
Cisco WCS: Go to Help>Licensing.
How to Install Cisco WCS:
This installation is based on version 4.2.128.
How to Upgrade
Cisco Aironet 1200 AP to Lightweight Mode: Download
UpgradeToolv30.exe and
c1200-rcvk9w8-tar.123-11JX1.tar from Cisco.
How to Save
Cisco WLS Controller Configuration: Login Cisco WLS
Controller.
Does Cisco WLS Controller support 1231 AP: We have over 30
Cisco 1231 AP. We would like to buy a Cisco Wireless Controller
2501 to manage all APs.
VPN users can't access OWA or Outlook: The client was
working on the Failover Exchange and added CAS servers to a new
VLAN. After that, VPN users have a problem to access OWA or
Outlook. Internet user opens OWA no problem.
How can I add two IP addresses to Access Rule in Cisco ASA:
I have follow this
instruction
to create a access rule
in our ASA5510.
How to configure
Access Rule in Cisco ASA: Login ASDM.
Can't assign public
IP address to an access rule on Cisco ASA: A client tries to
modify an access rule and he wants to change outside to a public
IP address in the access rule source.
VTP VLAN configuration not allowed when device is in CLIENT:
:When attempting to add a vlan to local database, you may
receive this message:
Some VLANs don’t on some switches: We have over 30
Cisco 3560
switches and over 10
VLANs
on our network.
Can I setup banner in Cisco ASA: To configure the
ASDM, session, login, or message-of-the-day banner,
Laptop can't access Wireless Bridge: Our client
follows this instruction How to configure Cisco Wireless Bridge
Problem
to setup Non-Root Bridge:
I get the error: "Set Infrastructure SSID'
must be configured in order to set the 'Role in Radio Network'
How to configure Cisco
Wireless Bridge: Follow this link to assign IP
address to the Cisco Wireless AP
Some wireless SSID don't work: The client has some Cisco
1200 and 1300 wireless AP configured 2 SSID, Private (WPA
Enterprise and Pubic.
How to enable RADIUS
authentication on Cisco switches: RADIUS authentication
allow domain users to login Cisco Switch and read and/or edit
the configuration based on their group rights.
Cisco VPN requirement for Android devices: Cisco ASA
New features in 8.4(2)
Cisco VPN Reason 429: Unable to resolve server address:
The Cisco VPN client can't establish the VPN connection with
this message: Reason 429: Unable to resolve server address.
Cisco VPN client
errors: Another VPN client activates and the router limits only connection.
VPN
Client
Reason Code:
This table lists and describes
VPN Client
reason messages with troubleshooting.
Cisco VPN Reason 429: Unable to resolve server address:
The Cisco VPN client can't establish the
VPN connection
Cisco Switch: Unexpected BPDU
received. Port has been Disabled: “This
feature was first implemented to handle special collision
situations in which the switch detected excessive or late
collisions on a port. Excessive collisions occur when a frame is
dropped because the switch encounters 16 collisions in a row”.
Cisco Wireless is not stable:
The client has 5 Cisco APs in their Cisco Wireless LAN Controller. The
wireless keeps dropping and no stable
NAP with Cisco Routers: I have some users, which are connected to my
network via VPN. VPN terminated on Cisco router. Users use PPTP VPN to
connect to the office network. I want to use NAP for this clients. Does any
one tried this?
W2k8 NPS as a RADIUS server for a Cisco router: I currently have W2k3
IAS configured as a RADIUS server for our VPN clients connecting to a Cisco
2811 router.
Find out which device is using public IP address: the client
has over 30 public IP addresses. They can ping all IP addresses,
but they don't think they use all of them. They would like to
find out which devices are using them.
Enterprise Wireless keeps popup for credentials: The client
follow this "How to set up a Cisco Enterprise Wireless Using NPS
in Microsoft Active Directory"
Cisco Enterprise Wireless doesn't work:
but can't make it work. The wireless keeps popup for
credentials. The problem is he doesn't know this Cisco AP
configuration issue or IAS issue.
How to set up a
Cisco Enterprise Wireless Using NPS in Microsoft Active
Directory: Configure Cisco 1242 AP by following this
artcle:
How to configure a new Cisco 1242 wireless AP
The example of Initial
configuration on Cisco PIX using ASDM: The Adaptive Security
Device Manager (ASDM) is web-based design connect to and manage
a PIX/ASA using a web browser.
The example of Initial
configuration on Cisco PIX version 5.1:
In our example, the outside IP address of the PIX is 192.167.1.2; inside IP
address inside is 10.0.0.2; the outside LAN/WAN IP range 192.168.0.0/24 and
inside is 10.0.0.0/8; the admin workstation IP is 10.0.0.10, Exchange server IP
is 10 10.0.0..3, telnet client IP is 10.0.0.11.
How to backup/restore HP swicth config using TFTP: To
backup HP ProCurve witch configuration using TFTP, please follow
these steps
How to configure a VLAN port in HP
ProCourve Switch using Web Utility:
Select the port and Mode to Untagged, which is the port that
will be used the specified VLAN, port 4 and VLAN 100 in our
example.
How to configure VLAN in HP
ProCurve Switch: In this example, we will configure port 21 for VLAN 100
Cisco Switch Initial Configuration:
Here are the example of configuring Cisco switch 2995
How to configure channel in Cisco AP:
Q: All our Cisco 1200 AP are setup to use lease congested Frequency.
However, our security want to use clear channel 1 to 6. How do you configure
Cisco AP to use channel 9?
Can't connect Cisco 2955 to 3560G switches:
The client wants to configure Cisco switch 2955 to access one of their 3560G
switch. However, it doesn't work and the 2955 can't access the 3560.
Can't establish Cisco VPN with HASH payload can't be verified:
Situation: when trying to establish the VPN, the user receives this error: Sev=Warning/3
IKE/0xE3000056. The received HASH payload cannot be verified
How to configure channel in Cisco AP:
Q: All our Cisco 1200 AP are setup to use lease congested Frequency. However,
our security want to use clear channel 1 to 6. How do you configure Cisco AP to
use channel 9?
Configure Cisco Switch for Dell NIC Teaming: We created NIC Teaming in Dell
PowerEdge R710 server. The two NICs are connecting to the Cisco switch 3560G
without any issues. If we unplug one cable, the server still works and connects
to the network. Do we need to configure EtherChannel on those two ports.
Cisco: Wireless client can't receive the IP: Situation: The
client tries to setup Cisco wireless 1310 bridge. The client can receive the
signal but can't logon the domain. Ipconfig shows the client can't receive IP
from the DHCP server and the IP is 169.254.x.x.
|
Top Cisco Issues
VPN Client
Issues
NAT Issues
Password Issues
PIX/ASA Issues
Routing Issues
Switch Issues
Telnet Issues
VPN Error
Codes
VPN Reason Codes
WEB/SSL VPN
Wireless
Issues
Top
Cisco How to
Cisco
Security
Configure
PIX/ASA
Configure Router
Configure Switch
Configure VLAN
Configure
VPN
Configure
Wireless
Configuration
Examples
Configuration Tools
Upgrade
Cisco Software |