Help with accessing DSLAM using internet explorer

TheBabbler · 07-02-2009, 02:10 AM

Hello,

I am having a problem accessing a DSLAM - I believe its a routing problem and need some help sorting it.

I have a Windows XP pc with IP address of 200.200.100.120. I then have a DSLAM with a default address of 192.168.16.250 and gateway of 192.168.16.1

I can not access this router using its IP address in IE or ping it. Obviously I need to add something else to the settings.

I added a second IP address in the Advanced tab for the network card on the XP pc of 192.168.16.120 but that did not help.

Any ideas? The PC is connected to a 6 port switch and which the DSLAM is also connected to.

I can set the IP adderess of the router to 200.200.100.80 with no problems using a com port interface and TELNET and then access it from IE but I dont want to do that. I want to be able to set its address via the IE interface in the first place.

All help appreciated as to what I need to do to XP to see the address given.

Prometheus_Fire · 07-02-2009, 06:05 AM

Sounds like you've solved your own problem and are tackling the original issue from the wrong angle.

Firstly: Can you not keep the DSLAM on the 200.200.100.80 IP address? This would solve your issue.

What are your subnet boundaries on the 192.168 and 200.200 ranges? Are they standard class C /24s?

Also, it doesn't matter if the DSLAM and PC are on the same switch when they are on different subnets. Switches only provide layer 2 connectivity. To route IP packets between subnets you need the intervention of a layer 3 device such as a router.

If you need the different subnets to have access to each other you'll need to define VLANs on the switch for each subnet then you'll need to trunk the VLANs out to a router (Or it can all take place on a layer 3 switch) where inter VLAN communication can take place.

TheBabbler · 07-03-2009, 12:24 AM

Thanks for the reply.

The problem is the customer resets the DSLAM to factory settings and then cant access it to change it back to the settings they should be without us going there and using a PC with a COM port. Was hoping to set up their PC to be able to access the default address of the DSLAM. I dont want the DSLAM to be 192.160.16.50 - its the only 192 addrss on the network but its the default factory address :(

As for boundaries - we use static addressing not a DHCP server or anything like that.

Im reletively new to these problems so apologies if Im not sounding technically correct or making much sence

Prometheus_Fire · 07-03-2009, 07:04 AM

Why would the customer need to repeatedly reset to factory defaults?

Anyway, I'm assuming that you're working with Cisco kit; you could try port forwarding and NAT, but you would need a second network interface on the DSLAM as the switchports you'll be connecting to will most likely just be access ports and as such only able to pass traffic from one subnet.

Alternatively, you could define a VLAN for the subnet the 192.160.16.50 address is on on your access router and trunk it through to your switch. Then all you'd need to do to is to remotely change the switchport to access that VLAN if the customer reset the DSLAM.

Also, when I mentioned boundaries, I was referring to bit boundaries and subnetting, not DHCP or static addressing.

TheBabbler · 07-06-2009, 12:34 AM

Thanks,

They dont NEED to do it - they have a tendency of doing it when something goes wrong with their network - we do tell them not to...

Not using Cisco kit. Standard Intel nework card on the Windows XP Pro PC connecting directly to an unmanaged Siemens switch and then that connects to the DSLAM.

Addresses in our network are all 200.200.100.x starting at x=1 to x= 110. Subnet of 255.255.255.0 on all PCs.

Didnt realise it would be this compicated as Im sure in the past I just set up a 2nd address for Win xp network card and it worked - but doent seem to now...

Prometheus_Fire · 07-06-2009, 01:07 AM

You can set up a secondary IP address on a PC.

That won't work on the DSLAM though as the scenario you're looking at will be a factory reset. So, what you need is a layer 3 device in front of the DSLAM to make routing decisions for the 192.160.16.50 subnet that will be in place in the event of the customer performing a factory reset.

The way I see it, your options are:

Might be easier, just to offer a managed service and remove their remote access rights!
Alternatively, if you have an XP PC near the DSLAM, can you run a console cable from it to the DSLAM and just access the PC remotely as needed?
Or if you have the budget, you could invest in an OOB console device.

Regards,

Pro

TheBabbler · 07-06-2009, 08:15 AM

Fixed the problem. Well, if the DSLAM had been set to default address my original fix would have worked! (add a second IP address of 192.168.x.x to the Windows XP network card). But the address wasnt default as I discovered by plugging a com port and Telnet to it. Added the same class address to the network card and it worked in IE no problem.

So all good now. Thanks! :)

Prometheus_Fire · 07-06-2009, 08:23 AM

Well done.

07-02-2009, 02:10 AM	#1 (permalink)
TheBabbler Registered User Join Date: Jul 2009 Posts: 4 OS: xp pro	Help with accessing DSLAM using internet explorer Hello, I am having a problem accessing a DSLAM - I believe its a routing problem and need some help sorting it. I have a Windows XP pc with IP address of 200.200.100.120. I then have a DSLAM with a default address of 192.168.16.250 and gateway of 192.168.16.1 I can not access this router using its IP address in IE or ping it. Obviously I need to add something else to the settings. I added a second IP address in the Advanced tab for the network card on the XP pc of 192.168.16.120 but that did not help. Any ideas? The PC is connected to a 6 port switch and which the DSLAM is also connected to. I can set the IP adderess of the router to 200.200.100.80 with no problems using a com port interface and TELNET and then access it from IE but I dont want to do that. I want to be able to set its address via the IE interface in the first place. All help appreciated as to what I need to do to XP to see the address given.

07-02-2009, 06:05 AM	#2 (permalink)
Prometheus_Fire Registered User Join Date: Jan 2007 Posts: 134 OS: Win2K, WinXP, Win Vista, Win2K3, Win2K8, IOS	Re: Help with accessing DSLAM using internet explorer Sounds like you've solved your own problem and are tackling the original issue from the wrong angle. Firstly: Can you not keep the DSLAM on the 200.200.100.80 IP address? This would solve your issue. What are your subnet boundaries on the 192.168 and 200.200 ranges? Are they standard class C /24s? Also, it doesn't matter if the DSLAM and PC are on the same switch when they are on different subnets. Switches only provide layer 2 connectivity. To route IP packets between subnets you need the intervention of a layer 3 device such as a router. If you need the different subnets to have access to each other you'll need to define VLANs on the switch for each subnet then you'll need to trunk the VLANs out to a router (Or it can all take place on a layer 3 switch) where inter VLAN communication can take place.

07-03-2009, 12:24 AM	#3 (permalink)
TheBabbler Registered User Join Date: Jul 2009 Posts: 4 OS: xp pro	Re: Help with accessing DSLAM using internet explorer Thanks for the reply. The problem is the customer resets the DSLAM to factory settings and then cant access it to change it back to the settings they should be without us going there and using a PC with a COM port. Was hoping to set up their PC to be able to access the default address of the DSLAM. I dont want the DSLAM to be 192.160.16.50 - its the only 192 addrss on the network but its the default factory address :( As for boundaries - we use static addressing not a DHCP server or anything like that. Im reletively new to these problems so apologies if Im not sounding technically correct or making much sence

07-03-2009, 07:04 AM	#4 (permalink)
Prometheus_Fire Registered User Join Date: Jan 2007 Posts: 134 OS: Win2K, WinXP, Win Vista, Win2K3, Win2K8, IOS	Re: Help with accessing DSLAM using internet explorer Why would the customer need to repeatedly reset to factory defaults? Anyway, I'm assuming that you're working with Cisco kit; you could try port forwarding and NAT, but you would need a second network interface on the DSLAM as the switchports you'll be connecting to will most likely just be access ports and as such only able to pass traffic from one subnet. Alternatively, you could define a VLAN for the subnet the 192.160.16.50 address is on on your access router and trunk it through to your switch. Then all you'd need to do to is to remotely change the switchport to access that VLAN if the customer reset the DSLAM. Also, when I mentioned boundaries, I was referring to bit boundaries and subnetting, not DHCP or static addressing.

07-06-2009, 12:34 AM	#5 (permalink)
TheBabbler Registered User Join Date: Jul 2009 Posts: 4 OS: xp pro	Re: Help with accessing DSLAM using internet explorer Thanks, They dont NEED to do it - they have a tendency of doing it when something goes wrong with their network - we do tell them not to... Not using Cisco kit. Standard Intel nework card on the Windows XP Pro PC connecting directly to an unmanaged Siemens switch and then that connects to the DSLAM. Addresses in our network are all 200.200.100.x starting at x=1 to x= 110. Subnet of 255.255.255.0 on all PCs. Didnt realise it would be this compicated as Im sure in the past I just set up a 2nd address for Win xp network card and it worked - but doent seem to now...

07-06-2009, 01:07 AM	#6 (permalink)
Prometheus_Fire Registered User Join Date: Jan 2007 Posts: 134 OS: Win2K, WinXP, Win Vista, Win2K3, Win2K8, IOS	Re: Help with accessing DSLAM using internet explorer You can set up a secondary IP address on a PC. That won't work on the DSLAM though as the scenario you're looking at will be a factory reset. So, what you need is a layer 3 device in front of the DSLAM to make routing decisions for the 192.160.16.50 subnet that will be in place in the event of the customer performing a factory reset. The way I see it, your options are: Might be easier, just to offer a managed service and remove their remote access rights! Alternatively, if you have an XP PC near the DSLAM, can you run a console cable from it to the DSLAM and just access the PC remotely as needed? Or if you have the budget, you could invest in an OOB console device. Regards, Pro __________________ Scintillate, scintillate, asteroid minific; Feign do I fathom your nature's specific Exaltedly set on the aether capacious A reasonable facsimile of a gem carbonaceous. Last edited by Prometheus_Fire; 07-06-2009 at 01:13 AM. Reason: Alternatively

07-06-2009, 08:15 AM	#7 (permalink)
TheBabbler Registered User Join Date: Jul 2009 Posts: 4 OS: xp pro	Re: Help with accessing DSLAM using internet explorer Fixed the problem. Well, if the DSLAM had been set to default address my original fix would have worked! (add a second IP address of 192.168.x.x to the Windows XP network card). But the address wasnt default as I discovered by plugging a com port and Telnet to it. Added the same class address to the network card and it worked in IE no problem. So all good now. Thanks! :)

07-06-2009, 08:23 AM	#8 (permalink)
Prometheus_Fire Registered User Join Date: Jan 2007 Posts: 134 OS: Win2K, WinXP, Win Vista, Win2K3, Win2K8, IOS	Re: Help with accessing DSLAM using internet explorer Well done. __________________ Scintillate, scintillate, asteroid minific; Feign do I fathom your nature's specific Exaltedly set on the aether capacious A reasonable facsimile of a gem carbonaceous.