Cisco Switching/Routing :: 2600 DHCP From Service Provider Not Working
Feb 7, 2013
So I have a 2600 that I have configured three sub interfaces on. FA0.0.1 is set for DHCP and supports VLAN 1. FA 0/0.2 for Voice, FA 0/0.3 for Data. I have this router interface plugged into FA 0/24 on my 3550 and the 3550 is configured as a dot1Q trunk (I have attached configs for RTR and SW).I have most ports configured as access VLAN 1 which is where i have my ISP connection plugged FA0/1 on the 3550. When I connect the service provider link FA0/0.1 never picks up an address. If I take my internal DHCP server and connect it to FA0/1 of the 3550 it snags an address almost immediately.In my mind this validates that my config is fine. I also took the same cable from the service provider cable modem and connected it to my laptop and the laptop is pulling DHCP.
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Jan 21, 2013
I have a port on 7600 connecting via Single Mode Fibre to my service provider. Service provider has 1000-Full with auto-negotiate. I am seeing following output on my 7600. [code] if this interface is only capable of doing 1000Mb, how come it is showing 100-Full. If I change to nonegotiate option (both my side and provider side), link goes down. My provider has confirmed they have 1000Full their side.
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Sep 10, 2012
I have Windows 2008 server running isa server with dedicated ip (which I take from my Internet Service Provider ISP) running my website, if my internet connection is down my website is not accessible from outside world.How can I switch to another ISP using same dedicated ip address when my ISP connection is down?
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Sep 4, 2012
Is this a wired or wireless connection issue? Both Who is your Internet Service Provider (ISP)? Comcast..What type of Broadband connection are you using? Cable..What is the exact Make and Model of your Modem, Router or Modem/Router Combo - (Main)Netgear WNR3700v2 / WNR2000v3(secondary) My current setup is the 3700 router is taking the internet from the modem cat5e and spewing the wireless. I would like to have the secondary router use the wireless from router 1 as the internet source and push the internet out of the 4 hardline ports so I can plug my upstairs xbox 360 into the router via cat5e. I'm just kinda new to this and still learning so I'm not sure how to configure the router to do this. I can get into the settings of the router just fine but finding the right settings to tweak is a little difficult.
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Feb 14, 2012
does Cisco 2600 series switch support 802.1x and DHCP snooping?
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Mar 17, 2013
i have a simple router on a stick config which is providing dhcp to a customer SSID. however i don't want employees to stay on it and eat the band width since its open. the lease is set to an hour, is there anyway that i could set it so that once your lease expired it can't be renewed for 4 about 8 hours? I am using a cisco 2600 router in this setup.
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Mar 19, 2012
can you enable dhcp service on a 3560 switch.
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Sep 25, 2012
My Network Layout is as, Firewall (with Routing)------>Cisco 3560 Switch (L3)------> connected 8 Cisco 2960 switch (L2)----> all users I have configured 20 VLAN's on cisco 3560 switch with Dynamic Pool and Static, Means, 5 Vlan's are Dynamic and remaining are Static Our Company process provides only internet access to existing clients computers. Problem is that, I configured Static VLAN 5 for one of our Client in their seperate room, mean to say, i activated all ports of their room with Static VLAN 5. one day they configured own DHCP server on Windows 2003 Server with same subnet (Same as VLAN5) in their room without any information and now their all computer/ Laptop acquiring ip address Dynamically.
If i have configured Static vlan on that port's then how it is get Dynamic ip from same port's.How to restrict to permit another DHCP server/Service in our premises. I Do not want to give administrative control to Clients to do such kind of thing with LAN.
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Nov 10, 2011
I have some trouble with that policy-map on my 2960 or 3560 switches with LAN base 12.2(53)SE2. I want to use that feature to catch video traffic from webcams in laptops which can't send dscp values out of the box. This is my test config to check if the function is working: catch every traffic from my workstation for testing, access-list 101 permit ip any any, class-map match-all CL_TEST
1. I can't see any counters with the command "sh policy-map interface FastEthernet 0/1". Cisco tells that this command is not possible. But how I can see if the policy is working correct?
2. When I did the configuration I can't see any packets with dscp af41 on the out going interface on the switch with "sh mls qos int gi0/1 statistic" as I expected. After reloading the switch I see the pakets with af41. Okay for that moment. But.After that I changed something in the policy-map. Only "set ip dscp ef" for a second test.
Generating some traffic I see only packets with af41 as before I changed the policy-map. No traffic with ef on the outgoing interface.
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Jan 6, 2013
interface Vlan24
description Internal Wireless Internet
ip address 10.x.0.1 255.255.254.0
[Code]....
So, I am trying to limit the bandwidth used by this vlan. The service-policy output statement works, the service-policy input statement does not. My test is to get on that vlan and go to speedtest.net. My download speeds are about 3.5Mb/s, my upload speeds are about 20Mb/s.
it has something to do with this:
sh mls qos ip
QoS Summary [IPv4]: (* - shared aggregates, Mod - switch module Sid - Switch Id)
Int Sid Mod Dir Class-map DSCP Agg Trust Fl AgForward-By AgPoliced-By
[Code].....
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Feb 5, 2013
"The service provider in your current location is restricting access to the InternetYou need to log on with the service provider before you can establish a VPN session. You can try this by visiting any website with your browser."We are using an Internal IP....and the external, same resultI am the IT Admin and this was working last week till I upgraded to the newer anyconnect. Internet is just fine....I am at a loss.
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Feb 25, 2012
My folks have Time Warner (Roadrunner) Internet service. They power-down their Dell every night. When they shut down last night they had no problems and were running Time Warner (Roadrunner). When they booted the computer this morning the computer is trying to connect to Adelphia.
They changed nothing. The wiring to the computer was not compromised in any way.
Time Warner tried to "ping" their modem and could not "see" the modem. They think it is a line problem - but the fact that the computer is looking to connect to an alternate service provider makes me think that it is possibly a problem with a setting in the computer.
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Jul 22, 2012
I have DNS setup through No-IP.com. How do I add this service provider to my WNDR3400v2 router? It only has DynDNS.org listed and I can't create a free account there.
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Mar 27, 2012
how to separate two different static Ip address provided by different service provider in Sonic wall TZ-210
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Jul 9, 2012
I have currently a Cisco 3600 router, it has three interfaces (all ethernet interfaces only).We being a client, our requirement is, we want two links one being the primary and one secondary for the fail over.My ISP has done certain configurations, but I am so puzzled what really has been done. I asked with them and they told that they have provided us one public IP 202.166.217.248 via Fibre--> Media Converter-->Ethernet 0/0.At the same time, they have given us a pool of addresses of the network 202.166.216.48/29 through the interface Ethernet 2/1.And we have used all the available public IPs in the server farm.They have told that, for the failover purpose via wireless, they have even used an IP address 202.166.213.114/25.
Now, where my confusion lies is, cant they provide the pool address via fibre? What is the significance of the ip that has been provided via fibre? What actually is its purpose? Isn't it consuming an extra interface ?Cant we have both the primary and secondary link excluding that one additional process?Or, am not understanding the real working mechanism how ISP distribute the internet?
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Mar 4, 2012
I have cisco 1841 router in my office.In that router we configured MPLS bgp with two different service provider. [code] We can't able to use the different service provider at the sametime.Cisco 1841 is support two different AS ???
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Jun 3, 2012
I am trying to confgure a L2L VPN tunnel to a service provider using an ASA 5505.My problem is that the service provider will not accept traffic from a LAN subnet, they will only accept traffice from a public IP.We have a small public subnet of x.x.x.50/255.255.255.248, our public IP (outside interface IP on the ASA 5505) is x.x.x.50 and the service provider wants to see traffic coming from us on x.x.x.51How can I NAT our LAN subnet (10.0.0.0/24) to one public IP (x.x.x.51)?
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Nov 4, 2012
I have a wired broadband connection with a modem. My internet service provider does not have Wi-Fi. Can I convert it myself into wi-fi by connecting it to a router. If possible how?
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Aug 28, 2012
My modem with single network connectivity (Type I) works fine. I tried to replace with Type II modem (with wifi- and 4 or more ports) for connectivity. I could not establish connection with the server of the service provider. I tried to replace with a different type of typeII modem. Still the same. What could be the reason?I connected the same in a different workplace to a different PC.
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Mar 14, 2007
WRT54G v7 - cannot specify service provider
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Dec 19, 2012
How to configure load balancing in MPLS between two different service provider.
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Mar 15, 2013
Region : Austria
Model : TL-MR3420
Hardware Version : V1
Firmware Version :
ISP : orange.at
When I first installed the router I used the built-in provider settings for "ONE" which used to be the name of the provider before it was taken over by orange.at. It seemed to work fine but I experienced some funny server errors with certain web services. I contacted orange.at about this and they told me to adjust the provider settings in the router as follows:
Dial number: *99#
APN: fullspeed
The reason for the problems was that they use different proxy servers for their services and applications. Now it works fine (so far).
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Sep 3, 2010
If I have a wireless network set up with the Linksys E1000 using one internet provider and then change the internet provider service to someone else, do I have to reset up the network or is it simply a matter of connecting the new internet service to the router?
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Jan 24, 2011
We have multiple sites that are linked via MPLS (L3) circuits. We have good size circuits for Internet at two main sites (HQ and QC) and smaller sites come to HQ site to go to internet. We are running ospf (Cisco L3 switches) with service provider (ME3400) at these two main sites and service provider then redistributes routes back into MPLS via BGP and then smaller sites ME3400 learn these routes. i am injecting default routes from HQ and QC, but Telco is only redistributing default from HQ. So large pipe Internet at QC is not being used effeciently. Also if MPLS at HQ fails, then we are told, we need to call Telco and they will make change in their network to now start distributing default from QC.it was my understanding that telco can use BGP communities and advertize one default as prefered and second with higher cost, so that failover can occur automatically. And that they can also set up so that west cost sites use HQ and east cost sites can use QC for going to internet, but they say it is not possible.it the least, can I do something like this at my end for failover for internet, in case MPLS at HQ goes down (soon we will be setting up a point to point VPN tunnel between HQ and QC so that MPLS failure at HQ will trigger advertisement of HQ routes over tunnel via QC into MPLS, so other sites can then come to HQ thru QC over this tunnel. At QC Cisco router (to detect loss of default route from HQ and then start advertizing default from QC)
router ospf 1
default-information originate always route-map From_HQ
exit
ip access-list standard From_HQ
[code]....
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Jan 24, 2013
I seem to be having a problem with DNS name resolution after configuring my router (Cisco 3725 running IOS image: c3725-adventerprisek9-mz.124-25.bin) for handling DHCP requests.
Before I made the change, everything was working correctly; I could ping Google.com from a computer inside my LAN and would get response from one of Google's public IP's like normal.
I had a separate DHCP/DNS server running Windows Server 2008 handling the DHCP request and DNS queries.
When I made the change, I turned off the DHCP/DNS server and issued the following DHCP commands to my router:
Code...
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Apr 9, 2013
I am upgrading from 3750-E IOS 12.2 to 3750-X IOS 15.0
I have a dhcp pool set up to give out an ip address based on the Physical port of the switch. I also have it configured to give out "reserved only" addresses.
The configuration works when i plug a dhcp device in the 3750E. (IOS12.2) The configuration does not work when i use the same config on 3750X (IOS15)
When i debug dhcp, i see the DHCP discover message come in, but no offers or anykind of response from the 3750X.
If i remove the "reserved only" line the switch gives out IPs, but of ocurse not the ones i want. I did that to prove both the client and the switch can give out an IP.
So i have a feeling the subscriber-id client-id interface name mapping is not right, or not created.
Here is a snippet of config.
!
no ip dhcp use vrf connected
ip dhcp use subscriber-id client-id
ip dhcp subscriber-id interface-name
[Code]......
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Jan 9, 2013
I recently installed DHCP snooping on a 3750v2 switch (Version 12.2(55)SE4) and configured the uplink(Po2) as a trusted port. The problem is that clients cannot receive an IP address. When I disable DHCP snooping it is working properly. DHCP snooping is configured correctly but I don't have an idea how to resolve it. [code]I tested the solution on the same kind of hardware switch and firmware and it worked out fine. What is causing the clients not to receive an IP address from the DHCP server?
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Sep 25, 2012
I need to apply DHCP snooping on 4500 series switches working as L2 in my Network. We have external DHCL Server in another location connected with 6500 series switch.
Running EIGRP Configured Voice & Data Vlan both
DHCP Server -------- 6509 switch<----------------------------------->6509 Switch -------- 4500 switch ----------------------------------------------------------Ip Phones.
(ving Redundant) (ving Redundant)
I need to know whether the configuration which I mentioned in scenario is enough for apply DHCP snooping in my network.
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Feb 19, 2013
connected DSL directly to 2900 series router , but as DSL public IP is not static (dynamic) its difficult to access Router when out of home, any other means to access router without static IP
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Jun 21, 2012
I am planning to use a pair of Catalyst 3750 for QinQ over a L2 link (lan extension)
We neeed to have control over what vlans we propagate over this link and we want to avoid incuring costs for every aditional vlan we might need to add to the trunk that would connect to the QinQ provider switches
Our workaround for this would be to ask the provider to give us an end to end vlan that supports MTU-1504B (QinQ frame size) and connect our switches to this.
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Nov 10, 2011
- I have an older router 2600 running 12.1(4) IOS.
- There are a few clients connected to it via the frame relay connection.
- There is an IP that clients access 192.168.1.10 for example
- We need to do a NAT for this IP for one specific client only like "ip nat inside source static 192.168.1.10 1.1.1.1"
- However if I do that, that will effect other clients too
- On the interface for this client I'll be using "ip nat outside"
- Is there a way to accomplish this without effecting other customers?
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Dec 2, 2011
I've been working with these two Cisco devices in my home off and on for several months now but I just can't take it anymore, I'm about to throw them away and go back to Linksys router.
I have a Cisco 2600 Router with only one Ethernet card in it so I have to trunk from my 3550 Switch to that device. I'd like to have my ISP and all users plug into switch and all trunk back to the router's sub interfaces. Currently, I have started over...again, and am unable to simply get the router and switch to ping each other if I put sub-interfaces on the router. See my configs:
2600 ROUTER:
Router#sho run
Building configuration...
Current configuration : 555 bytes
[code]......
3550 SWITCH:
Switch#sho run
Building configuration...
Current configuration : 2302 bytes
!
version 12.2
[code]..........
Port F0/24 is in VLAN 1, as are all ports but Port F0/1 which is my desktop PC. I mocked it up in Packet Tracer and it works just fine. This is just a simple setup and I'm making sure I can ping between switch and router before I move to each next step.
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Sep 17, 2012
I am trying to configure SDM 2.5 on a cisco 2600.I have access via telnet to the router and was able to change the enable password - which i think is level 15 (right?) and setup (and bring up) the ip on the ethernet interface. I can ping - and get response from - the router Trying to install SDM on the router i need to provide the default username i tried both admin/administrator but SDM can't communicate with the router?
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