Help address IP PIX

How many subnets can I connect to an interface of a PIX?

Each interface of a PIX may have one and only one IP address are entrusted to him. This isn't a router that can have multiple secondary IP addresses configured.

Tags: Cisco Security

Similar Questions

Help with Cisco PIX 506th

I need help setting up a Cisco PIX 506th Version 6.3 (5)

I use the PDM to configure the device, because I don't know enough of CLI. I want to just the simplest of configurations.

Here is what is happening, I set up then I hang the Interface 1 to my laptop and use DHCP to get an ip address, but I can't get out to the internet like that. Thanks PDM tools, I can ping outside the IPS very well.

6.3 (5) PIX version
interface ethernet0 car
Auto interface ethernet1
ethernet0 nameif outside security0
nameif ethernet1 inside the security100
activate the encrypted password of DkreNA9TaOYv27T8
c4EBnG8v5uKhu.PA encrypted passwd
hostname EWMS-PIX-630
domain ciscopix.com
fixup protocol dns-length maximum 512
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol 2000 skinny
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
names of
object-group service udp test
port-object eq isakmp
inside_access_in ip access list allow a whole
access-list inside_access_in allow a tcp
access-list inside_access_in allow icmp a whole
Allow Access-list inside_access_in esp a whole
inside_access_in tcp allowed access list all eq www everything
inside_outbound_nat0_acl list of permitted access interface ip inside 10.10.10.96 255.255.255.240
inside_outbound_nat0_acl ip access list allow any 10.10.10.192 255.255.255.224
pager lines 24
timestamp of the record
recording of debug trap
host of logging inside the 10.10.10.13
Outside 1500 MTU
Within 1500 MTU
IP outdoor 75.146.94.109 255.255.255.248
IP address inside 10.10.10.250 255.255.255.0
alarm action IP verification of information
alarm action attack IP audit
location of PDM 10.10.10.1 255.255.255.255 inside
location of PDM 10.10.10.13 255.255.255.255 inside
location of PDM 10.10.10.253 255.255.255.255 inside
location of PDM 75.146.94.105 255.255.255.255 inside
location of PDM 75.146.94.106 255.255.255.255 inside
location of PDM 10.10.10.96 255.255.255.240 outside
location of PDM 10.10.10.192 255.255.255.224 outside
PDM logging 100 information
history of PDM activate
ARP timeout 14400
NAT (inside) 0-list of access inside_outbound_nat0_acl
NAT (inside) 0 0.0.0.0 0.0.0.0 0 0
inside_access_in access to the interface inside group
Route outside 0.0.0.0 0.0.0.0 75.146.94.110 1
Timeout xlate 0:05:00
Timeout conn 01:00 half-closed 0:10:00 udp 0: CPP 02:00 0:10:00 01:00 h225
H323 timeout 0:05:00 mgcp 0: sip from 05:00 0:30:00 sip_media 0:02:00
Sip timeout - disconnect 0:02:00 prompt Protocol sip-0: 03:00
Timeout, uauth 0:05:00 absolute
GANYMEDE + Protocol Ganymede + AAA-server
AAA-server GANYMEDE + 3 max-failed-attempts
AAA-server GANYMEDE + deadtime 10
RADIUS Protocol RADIUS AAA server
AAA-server RADIUS 3 max-failed-attempts
AAA-RADIUS deadtime 10 Server
AAA-RADIUS (inside) host 10.10.10.1 server timeout 10
AAA-server local LOCAL Protocol
Enable http server
http 10.10.10.0 255.255.255.0 inside
No snmp server location
No snmp Server contact
SNMP-Server Community public
No trap to activate snmp Server
enable floodguard
Permitted connection ipsec sysopt
Crypto ipsec transform-set ESP-DES-MD5 esp - esp-md5-hmac
ISAKMP allows outside
ISAKMP peer ip 206.196.18.227 No.-xauth No.-config-mode
ISAKMP nat-traversal 20
ISAKMP policy 20 authentication rsa - sig
encryption of ISAKMP policy 20
ISAKMP policy 20 md5 hash
20 1 ISAKMP policy group
ISAKMP duration strategy of life 20 86400
part of pre authentication ISAKMP policy 40
encryption of ISAKMP policy 40
ISAKMP policy 40 md5 hash
40 2 ISAKMP policy group
ISAKMP duration strategy of life 40 86400
ISAKMP policy 60 authentication rsa - sig
encryption of ISAKMP policy 60
ISAKMP policy 60 md5 hash
60 2 ISAKMP policy group
ISAKMP strategy life 60 86400
Telnet 10.10.10.0 255.255.255.0 inside
Telnet timeout 5
SSH timeout 5
Console timeout 0
dhcpd address 10.10.10.2 - 10.10.10.5 inside
dhcpd dns 68.87.72.130
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd allow inside
btork encrypted Ww3clvi.ynWeGweE privilege 15 password username
vpnclient Server 10.10.10.1
vpnclient-mode client mode
vpnclient GroupA vpngroup password *.
vpnclient username btork password *.
Terminal width 80
Cryptochecksum:5ef06e69c17b6128e1778e988d1b9f5d
: end
[OK]

any HEP would be appreciated.

Brian

Brian

NAT is your problem, IE.

NAT (inside) 0-list of access inside_outbound_nat0_acl
NAT (inside) 0 0.0.0.0 0.0.0.0 0 0

presumanly first NAT is fot your good VPN that acl looks a little funny, what exactly are you doing with that?

The second NAT is the real problem but for outgoing internet access - the NAT statement, you said not NAT one of your addresses 10.10.10.x which is a problem as 10.x.x.x address is not routable on the Internet.

You must change this setting IE. -

(1) remove the second NAT statement IE. "no nat (inside) 0 0.0.0.0 0.0.0.0.

(2) add a new statement of NAT - ' nat (inside) 1 0.0.0.0 0.0.0.0.

(3) add a corresponding statement global - global (outside) 1 interface.

This will be PAT all your 10.10.10.x to external IP addresses.

Apologies, but these are some CLI commands that I don't use PDM.

Jon

Help with vpn pix 501

I'm setting up a cisco pix 501 vpn tunnel but will have questions. The Firewall works although I am able to get out of the internet, but the VPN does not work. On the primary side, I see that the tunnel is up and the traffic is sent but not received.

Currently I'm sitting at the secondary location but don't know what the problem maybe. Anyone know what I have wrong which could prevent the data to send from this device?

Here is my config

Here's my config if it would help

See the race
: Saved
:
6.3 (5) PIX version
interface ethernet0 car
interface ethernet1 100full
ethernet0 nameif outside security0
nameif ethernet1 inside the security100
activate 2KFQnbNIdI.2KYOU encrypted password
2KFQnbNIdI.2KYOU encrypted passwd
hostname ciscofirewall
domain hillsanddales.com
fixup protocol dns-length maximum 512
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
fixup protocol rsh 514
fixup protocol rtsp 5
fixup protocol rtsp 55
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol 2000 skinny
fixup protocol smtp 25

fixup protocol sqlnet 1521
fixup protocol tftp 69
names of
access-list 101 permit ip 192.168.80.0 255.255.255.0 192.168.50.0 255.255.255.0
192.168.80.0 IP Access-list sheep 255.255.255.0 allow 192.168.50.0 255.255.255.0
in_outside list access permit tcp any host 192.168.50.240
in_outside list access permit tcp any host 64.90.xxx.xx
pager lines 24
Outside 1500 MTU
Within 1500 MTU
IP address outside 66.84.xxx.xx 255.255.255.252
IP address inside 192.168.80.1 255.255.255.0
alarm action IP verification of information
alarm action attack IP audit
location of PDM 192.168.50.0 255.255.255.0 outside
location of PDM 192.168.80.2 255.255.255.255 inside
location of PDM 192.168.50.0 255.255.255.0 inside
location of PDM 182.168.80.0 255.255.255.255 inside
location of PDM 0.0.0.0 255.255.255.0 inside
location of PDM 0.0.0.0 255.255.255.255 inside
location of PDM 192.168.80.5 255.255.255.255 inside
location of PDM 192.168.80.7 255.255.255.255 inside
PDM logging 100 information
history of PDM activate

ARP timeout 14400
Global 1 interface (outside)
NAT (inside) 1 0.0.0.0 0.0.0.0 0 0
Route outside 0.0.0.0 0.0.0.0 66.84.xxx.x
Route inside 192.168.50.0 255.255.255.0 192.168.50.240 1
Timeout xlate 0:05:00
Timeout conn 01:00 half-closed 0:10:00 udp 0: CPP 02:00 0:10:00 01:00 h225
H323 timeout 0:05:00 mgcp 0: sip from 05:00 0:30:00 sip_media 0:02:00
Sip timeout - disconnect 0:02:00 prompt Protocol sip-0: 03:00
Timeout, uauth 0:05:00 absolute
GANYMEDE + Protocol Ganymede + AAA-server
AAA-server GANYMEDE + 3 max-failed-attempts
AAA-server GANYMEDE + deadtime 10
RADIUS Protocol RADIUS AAA server
AAA-server RADIUS 3 max-failed-attempts
AAA-RADIUS deadtime 10 Server
AAA-server local LOCAL Protocol
Enable http server
http 192.168.80.0 255.255.255.0 inside
No snmp server location
No snmp Server contact
SNMP-Server Community public
No trap to activate snmp Server
enable floodguard
<--- more="" ---="">

Permitted connection ipsec sysopt
Crypto ipsec transform-set esp-3des esp-md5-hmac aptset
aptmap 10 ipsec-isakmp crypto map
correspondence address card crypto aptmap 10 101
card crypto aptmap 10 peers set 64.90.xxx.xx
card crypto aptmap 10 transform-set aptset
aptmap interface card crypto outside
ISAKMP allows outside
ISAKMP key * address 64.90.xxx.xx netmask 255.255.255.255
ISAKMP identity address
ISAKMP nat-traversal 20
part of pre authentication ISAKMP policy 10
ISAKMP policy 10 3des encryption
ISAKMP policy 10 md5 hash
10 2 ISAKMP policy group
ISAKMP life duration strategy 10 86400
Telnet 192.168.80.2 255.255.255.255 inside
Telnet 182.168.80.0 255.255.255.255 inside
Telnet 192.168.80.5 255.255.255.255 inside
Telnet 192.168.80.0 255.255.255.0 inside
Telnet 192.168.80.7 255.255.255.255 inside
Telnet timeout 5
SSH timeout 5
management-access inside

Console timeout 0
dhcpd address 192.168.80.2 - 192.168.80.33 inside
dhcpd dns 64.90.xxx.xx 64.90.xxx.xx
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd outside auto_config
dhcpd allow inside
Terminal width 80
Cryptochecksum:01532689fac9491fae8f86e91e2bd4c0
: end

Hello

At least the NAT0 ACL is not in use

You should have this added to the configuration

NAT (inside) 0 access-list sheep

-Jouni

Can VPN site-to-site with just 1 static IP address in PIX?

Hi all

Can I use pix for VPN with just 1 static IP address as follows:

LAN-A---PIX1---INTERNET---PIX2---LAN-B

Just PIX1 has static IP, PIX2 use DHCP from ISP. I have the config this type of VPN with another brand equipment. But the use of PIX, I just VPN config with both ends have a static IP and I can't find any information in the web site. Because when config VPN site-to-site I have to use the command 'same game '.

Can someone tell me how can I do with PIX? Thank you!

Best regards

Teru Lei

You just need to set up a dynamic encryption on PIX 1 card and a card standard encryption with a peer 'set' on 2 PIX. Here is an example configuration:

http://www.Cisco.com/warp/public/110/dynamicpix.html

Note that it also has VPN connection clients in 1 PIX (Lion), so forget all orders of "vpngroup" that you see in his configuration cause, they are not necessary for your scenario.

FF 27 - my fonts are pixely and I can't understand why.

Hello friends,

About 4 weeks ago, fonts on all the pages I visit using Firefox became pixely (some letters appear in bold, the lines seem to be low resolution, etc.). I tried the following steps to fix without success:

-Update of FF 27
-Reset by default
-Turn off hardware acceleration

Here is a link to a comparison of the FF27 vs Chrome vs IE screenshot: http://i.imgur.com/f8EBC6p.png

The only thing I can think of that may be the culprit, it is at the same time, I got a new monitor that requires a display installed on my laptop driver.

What other troubleshooting measures can I take to help address the display of police while I use my beloved Firefox?

Any help is appreciated.

Thank you.

Try to play with this:
=
```
layers.acceleration.disabled: True
```
And make sure that firefox has the updated driver, you can check in "subject: support.

and try turning off hardware acceleration: try disabling graphics hardware acceleration. As this feature has been added to Firefox, it has gradually improved, but there are still some problems.

You will have to perhaps restart Firefox for it to take effect, so save any work first (e.g. you compose mail, documents online that you are editing, etc.).

Then perform the following steps:
- Click on the orange top left Firefox button, then select the 'Options' button, or, if there is no Firefox button at the top, go to tools > Options.
- In the Firefox options window, click the Advanced tab, and then select 'General '.
- You will find in the list of parameters, the checkbox use hardware acceleration when available . Clear this check box.
- Now restart Firefox and see if the problems persist.
In addition, please check the updates for your graphics driver by following the steps in the following knowledge base articles:
- Troubleshoot extensions, themes, and issues of hardware acceleration to resolve common problems of Firefox
- Update your graphics drivers to use hardware acceleration and WebGL
This solve your problems? Please report to us!

Thank you.

The VPN client VPN connection behind other PIX PIX

I have the following problem:

I wanted to establish the VPN connection the client VPN to PIX on GPRS / 3G, but I didn t have a bit of luck with PIX IOS version 6.2 (2).

So I upgraded PIX to 6.3 (4) to use NAT - T and VPN client to version 4.0.5

I have configured PIX with NAT-T(isakmp nat-traversal 20), but I still had a chance, he would not go through the 1st phase. As soon as I took nat-traversal isakmp off he started working, and we can connect to our servers.

Now, I want to connect to the VPN client behind PIX to our customer PIX network. VPN connection implements without problem, but we can not access the servers. If I configure NAT - T on the two PIX, or only on the customer PIX or only on our PIX, no VPN connection at all.

If I have to connect VPN client behind PIX to the customer's network and you try to PING DNS server for example, on our PIX, I have following error:

305006: failed to create of portmap for domestic 50 CBC protocol translation: dst outside:194.x.x.x 10.10.1.x

194.x.x.x is our customer s address IP PIX

I understand that somewhere access list is missing, but I can not understand.

Of course, I can configure VPN site to site, but we have few customers and take us over their servers, so it'd just connect behind PIX VPN and client connection s server, instead of the first dial-in and then establish a VPN connection.

Can you please help me?

Thank you in advan

The following is extracted from ASK THE DISCUSSION FORUM of EXPERTS with Glenn Fullage of Cisco.

I've cut and pasted here for you to read, I think that the problem mentioned below:

Question:

Hi Glenn,.

Following is possible?

I have the vpn client on my PC, my LAN is protected by a pix. I can launch the vpn client to connect to remote pix. Authenticates the vpn client and the remote pix makes my PC with the assigned ip appropriate to its pool of ip address.

The problem that I am facing is that I can not anything across the pix remote ping from my PC which is behind my pix. Can you please guide me what I have to do to make this work, if it is possible?

My PC has a static ip address assigned with the default gateway appropriate pointing to my s pix inside interface.

Thank you very much for any help provided in advance.

Response from Glenn:

First of all, make sure that the VPN connection works correctly when the remote PC is NOT behind a PIX. If that works fine, but then breaks when put behind a PIX, it is probably that the PIX is PAT, which usually breaks IPSec. Add the following command on your PIX VPN client is behind:

fixup protocol esp-ike

See http://www.cisco.com/univercd/cc/td/doc/product/iaabu/pix/pix_sw/v_63/cmdref/df.htm#wp1067379 for more details.

If it still has issues, you can turn on NAT - T on the remote PIX that ends the VPN, the client and the remote PIX must encapsulate then all IPSec in UDP packets that your PIX will be able to PA correctly. Add the following command on the remote PIX:

ISAKMP nat-traversal

See http://www.cisco.com/univercd/cc/td/doc/product/iaabu/pix/pix_sw/v_63/cmdref/gl.htm#wp1027312 for more details.

NAT - T is a standard for the encapsulation of the UDP packets inot IETF IPSec packets.

ESP IPSec (Protocol that use your encrypted data packets) is an IP Protocol, it is located just above IP, rather than being a TCP or UDP protocol. For this reason, it has no TCP/UDP port number.

A lot of features that make the translation of address of Port (PAT) rely on a single to PAT TCP/UDP source port number ' ing. Because all traffic is PAT would be at the same source address, must be certain uniqueness to each of its sessions, and most devices use the port number TCP/UDP source for this. Because IPSec doesn't have one, many features PAT fail to PAT it properly or at all, and the data transfer fails.

NAT - T is enabled on both devices of the range, they will determine during the construction of the tunnel there is a PAT/NAT device between them, and if they detect that there is, they automatically encapsulate every IPSec packets in UDP packets with a port number of 4500. Because there is now a port number, PAT devices are able to PAT it correctly and the traffic goes normally.

Hope that helps.

Form of CONF. IPSec PIX to ASA

Hi.I have a small question. I have a PIX configured with Ipsec configuration, but we have now upgraded to an ASA.

I can just copy paste the configuration of PIX, ASA (all crypto and isakmp orders) or what I have to change some commands to make it work?

ASA uses the same addresses that PIX used in its configuration.

""isakmp key"" command is replaced by the tunnel-group.

use: -.

tunnel-group xx.xx.xx.xx type ipsec-l2l

tunnel-group ipsec-attributes xx.xx.xx.xx

pre-shared key "isakmp key."

where xx.xx.xx.xx is the address of the peer.

Political ISAKMP are replced with

ISAKMP crypto policy 'number

authentication

encryption

hash

Group

life

I hope this helps.

VPN site to Site with NAT (PIX 7.2)

Hi all

I hope for more help with config PIX. TBH I would classify myself as a newb on PIX, only dabbling in it every 6 months or so...

I have to configure a VPN site-to site between our UK and US Office, to replace our frame relay link. I have configured multiple VPN site to site on the before PIX, so am reasonably okay with the appearance of the config of who. What is a new concept for me is the needs of NAT'ing between the IPSEC tunnel.

The U.S. Agency requires us to NAT source addresses (i.e. 192.168.1.0) usable on their side address (i.e. 143.102.89.0). The tunnel must then be set to encrypt traffic between 143.102.89.0/24 and 172.24.0.0/14.

I added the following config and hoping to test it at the U.S. office happens online today.

If I Ping from 192.168.1.0 to 172.24.x.x source and run a SH NAT inside, the NAT translation seems good.

is the intellectual property inside 192.168.1.0 255.255.255.0 outside 172.24.0.0 255.252.0.0
static translation at 143.102.89.0
translate_hits = 4, untranslate_hits = 0

Could someone please go through the following lines of config and comment if there is no error?

Thank you very much

Kevin

/ * Style definitions * / table. MsoNormalTable {mso-style-name : « Table Normal » ; mso-tstyle-rowband-taille : 0 ; mso-tstyle-colband-taille : 0 ; mso-style-noshow:yes ; mso-style-priorité : 99 ; mso-style-qformat:yes ; mso-style-parent : » « ;" mso-rembourrage-alt : 0 cm 5.4pt cm 0 5.4pt ; mso-para-margin : 0 cm ; mso-para-marge-bottom : .0001pt ; mso-pagination : widow-orphelin ; police-taille : 11.0pt ; famille de police : « Calibri », « sans-serif » ; mso-ascii-font-family : Calibri ; mso-ascii-theme-font : minor-latin ; mso-fareast-font-family : « Times New Roman » ; mso-fareast-theme-font : minor-fareast ; mso-hansi-font-family : Calibri ; mso-hansi-theme-font : minor-latin ; mso-bidi-font-family : « Times New Roman » ; mso-bidi-theme-font : minor-bidi ;}

IP 143.102.89.0 allow Access-list ipsec - dallas extended 255.255.255.0 172.24.0.0 255.252.0.0

policy-nat-dallas-list of allowed extensive access ip 192.168.1.0 255.255.255.0 172.24.0.0 255.252.0.0

public static 143.102.89.0 (inside, outside) - list of access policy-nat-dallas

Crypto ipsec transform-set esp-3des esp-md5-hmac 3desmd5set

card crypto map dyn 40 correspondence address ipsec - dallas

set dyn-map 40 crypto map peer 143.101.6.141

card crypto dyn-map 40 transform-set 3desmd5set

dyn-map interface card crypto outside

crypto isakmp identity address

crypto ISAKMP allow outside

crypto ISAKMP policy 10

preshared authentication

3des encryption

md5 hash

Group 2

life 86400

tunnel-group 143.101.6.141 type ipsec-l2l

IPSec-attributes tunnel-group 143.101.6.141

pre-shared-key *.

You can configure NAT/Global pair for the rest of the users.

For example:

You can use the initially configured ACL:

policy-nat-dallas-list of allowed extensive access ip 192.168.1.0 255.255.255.0 172.24.0.0 255.252.0.0
NAT (inside) 1 access list policy-nat-dallas

Global 1 143.102.89.x (outside)

The static statement that you configured previously will take precedence over the above. So the printer gets statically using a NAT to 143.102.89.10, and the rest can do another ip address 143.102.89.x PATed.

Please note that for PAT, traffic can only be initiated from 192.168.1.0/24 LAN to 172.24.0.0/14, not the other way around.

Hope that helps.

PIX of VPN to Pix does not allow navigation from one end.

Hello

We went an office of a router to connect to the internet (do Nat) our Pix VNP company. Now from this office, I can go through all our corporate network, but I can't browse them from our corporate network. I read a few cisco docs and I installed WINS, still no luck.

Technicians from the isp for this office recommended disable Nat on this router (its doubly from). I have to change this Office Ip address external PIX and the default gateway to match any Ip subnet, they give me.

This change will affect our current VPN IKE and IPSEC policies and connection to that office?

Thank you

Mario Cabrejo

Network engineer

You will need to use an external (visible ip internet) on the external interface of the PIX and disable the NAT on the router. You have to re-create the tunnels they will point to a new ip address and not the router.

Hope this helps

Richard

Backup of the address book database

I do not understand how do I back up my address book from my office (Snow Leopard) to my laptop (Snow Leopard). Is no longer a "backup database" command.

Help address book is singularly vague with its various references to MobileMe, vCards, etc.

Could a wise old OWL if you please enlighten me.

Clarifying question - backup or copy to use with the address book on the other computer? Try to open the address book, select the contacts you want (hold down the SHIFT key or command to select multiple contacts), and then file/export as vCards. On the other computer, to load into the address book, file/import.

HOW WE LINK SHARED VARIABLE WITH DEVICE (SENSOR MODBUS ADDRESS) IN E/S SERVER MODBUS

I USE THE IO SERVER MODBUS WITH SHARED VARIABLES TO COMMUNICATE WITH THREE DEVICES (TEMPERATURE, PRESSURE AND LEVEL DEVICE). EACH DEVICE HAS ITSELF MODBUS ADDRESS TO BE IDENTIFIED IN THE E/S SERVER. THESE DEVICES ARE SUPPORTED BY THE MODBUS SERIES.

(1) HOW CAN I CONNECT EACH DEVICE SHARED THE DEVICE TO HELP ADDRESS VARIABLE?

(2) HOW DO I USE THE ADDRESS OF DEVICE FOR IDENTTIFY THE E/S SERVER APPLIANCE?

COULD YOU HELP ME?

Thank you

Hello

You will find attached a few slides explaining the different steps to create variables shared with e/s server Modbus.

You can also have a look at the demo on the website.

I hope this will help you communicate with your devices.

Kind regards

IP Helper

Im trying to get the IP address of the server DHCP (100.100.100.80) but he told me that it must be of the form A.B.C.D.

It is on a N2048 switch. Basically what Im trying to do is relay DHCP configuration of vlan 2 vlan 1. Ports 1-24 are vlan 1 and 25-48 are vlan 2 the DHCP server is physically connected to port 1 if what counts.

I received the same message as you did when you enter this IP to the web INTERFACE. However, the IP address works very well if enter you in the CLI. I'll have to do some more research on why the web UI behaves in this way. For now, you will need to connect to the switch CLI to use an IP address in the subnet.

Is a common tool used to a telnet/ssh connection to the switch.

http://www.PuTTY.org/

When the program will be open telnet select as the connection type. If telnet was disabled and ssh enabled, and then select SSH. In the host name box, enter the IP address of the switch. Then click on the Open button.

Once the CLI window is open you will be presented with a prompt that displays: console >, type the following commands.

Console > activate

Console # configure

Console (config) # ip helper-address 100.100.100.80 dhcp

Once this is done then issue the following command to ensure that the order is in place.

Console (config) # show ip helper-address

Once you are satisfied with the configuration you will need to save the configuration running in the startup configuration.

Console (config) # end

Console # copy running-config startup-config

Let us know if you have any questions about this process.

New configured vlan4 failed to get the IP address of our ad server

Any guy who can help me: due to the expansion of network, I need allocate a new subnet 192.168.4.0 on our lan co. existing, 3 private LAN 192.168.1.0 (primary, all related Windows AD server and internet devices). 192.168.2.0 and 3.0 are Department LAN for user workstations. All desktop user on all the networks had the host Windows AD 192.168.1.20 IP. I used a new switch 6249 dell to configure a new VLAN 192.168.4.0, but user on this network failed to get IP of the host of the AD. Could someone give advice? Console > console en #show run! Current configuration:! Description of the system "PowerConnect 6248, 3.3.10.3, VxWorks 6.5! Version of the system 3.3.10.3 software! Passage mode is configured as disabled! Configure the vlan database vlan 4 vlan routing 4 1 output battery 1 2 Member out ip address 192.168.1.221 255.255.255.0 ip default-gateway 192.168.1.1 no ipv6 do enable the interface vlan 4 routing ip address 192.168.4.22 255.255.255.0 ip helper-address 192.168.1.20 ip 192.168.1.20 domain helper-address dhcp ip mtu 1500 output user name 'admin' password level 15 dhcp 0192023a7bbd73250516f069df18b500 encrypted l2relay dhcp l2relay vlan 4! interface ethernet 1/g13 switchport access vlan 4 output! interface ethernet 1/g14 switchport access vlan 4 output! interface ethernet 1/g15 switchport access vlan 4 output! interface ethernet 1/g16 switchport access vlan 4 output! interface switchport ethernet 1/g17 access vlan 4 output! interface ethernet 1/g18 switchport access vlan 4 output! interface ethernet 1/g19 switchport access vlan 4 output! interface ethernet 1/g20 switchport access vlan 4 output! interface ethernet 1/g21 switchport access vlan 4 output! interface ethernet 1/g22 switchport access vlan 4 output! interface ethernet 1/g23 switchport access vlan 4 output! interface ethernet 1/g24 switchport access vlan 4 Server snmp community public rw to exit

Remove the routing of the 6248

Delete the IP address that you assigned to 4 VLAN on the 6248

On the S5624P create VLAN 4 and assign an IP address

On the S5624P implementation of the programme of assistance to point to the address DHCP IP

Make sure that the S5624P performs the routing VLAN.

Questions to address IP DHCP for assistance

Hello, I have a few questions about the dhcp ip helper address.

Assuming that my router has two interface of FE (0/0 and 0/1). 0/0 0/1 has 10.1.2.1/24 and 10.1.1.1/24 a.

0/0 via a LAN LAN switch connection has a DHCP of 10.1.1.5. There's no IP helper is configured on interface 0/0. Active DHCP server serves the 10.1.1.x dhcp clients.

We are now adding 0/1 with 10.1.2.1/24 on the router. We want to have the dhcp service to clients on this new LAN site but we will not have another dhcp on the LAN Server, and we are not set up router interface to run the dhcp server on it either.

Issues related to the:

1. can I configure the IP helper of 10.1.1.5 on the FE interface 0/1 with 10.1.2.1 answer on that?

2. If so, when the client on this new LAN sends dhcp broadcast to request ip address, will be the router on FE 0/1 'route' to FE 0/0 and the server 10.1.1.5 dhcp package? I read the IP address of said "before" assistance and I know if "step" = "road in layer 3" as well as the dhcp server is not connected to the FE LAN 0/1 switch. You are simply not sure if the DHCP server must connect to both switches LAN or not?

3. I guess this means that the DHCP Server configures two set of pools and serves both sets of clients, right? (I want to just make sure that it is my first cope with dhcp).

Thank you for your expert help.

Hello

Answers to your questions...

Your installation is like this...

Server (10.1.1.5) DHCP-{Fe0/0 (10.1.1.1) ROUTER or gateway Fe0/1(10.1.2.1)}

Your 10.1.1.5 DHCP server is configured with two scopes or pools to assign IP addresses to the customer requests.

Area 1: 10.1.1.0/24 with default gateway the 10.1.1.1 value option

Area 2: 10.1.2.0/24 with option default gateway value 10.1.2.1

a 3 - d. consider the request actually comes from a customer on the Fe0/1 interface. Support IP address is the router to forward DHCP broadcasts to 10.1.1.5 which is the DHCP server. While sending the request, she sees what interface, the application was received and it will identify the GIADDR field accordingly. So, in this case it affects 10.1.2.1 as he received Fe0/1 of the interface and the transfer of DHCP server.

You have to think from the point of view of the DHCP server, how and what IP address should allocate to the clients requested different networks. After receving the request, DHCP server will find the scope or the pool from which assign IP address by comparing the GIADDR field in the query and brought local default gateway values. In this example, it will match 2 scope and assigns a free IP of this pool.

3rd-4: Yes, you are right for the 3rd and 4.

You are welcome with more questions :-)

All the best...

-Ashok.

Client cannot get the external IP of DHCP address through WiM

WISN 5.2.178.0

6509 12.2 (33) SXH2a

WISN is in place, 1231 & 1131 joined APs, radio stations upwards, the customer associated but not an IP address.

Virtual interface with vlan # & IP on the destination VLAN.

WLAN with same vlan # as above.

I tried Open, PSK, WPA. Client cannot obtain an IP address.

What did I miss?

You have the virtual address set to 1.1.1.1?

Also, you have set up the address of the DHCP server on your interfaces VLAN? This is important because the controller basically uses an ip helper address to properly forward DHCP requests.

If you have these configured, try to use the internal DHCP server to test. The web GUI, access controller-> the DHCP server in-house. Configure a DHCP scope and activate it (don't worry, it is only used for wireless clients. It does not meet the DHCP requests on your network).

Now, go back to the controller-> Interfaces and configure the DHCP server to the management interface of the controller. See if your customers are able to get the addresses of the internal scope.

Help address IP PIX

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