how can I show the DHCP-range of a router if I don't have privilege level? (not in enable-mode),I can do a "show ip dhcp pool" - this will show me the range which is configured with the network-command.But there are also some dhcp-exclude-addresses which I can't see.... (I did a test on a router with full privilege-access)I need this because I have a router with limited access from our provider.
View 0 Replieswe have a 3560 switch configured with EIGRP with dhcp. We have a user that we cannot ping, however the interface show up / up and no errors on interface. the ip address is 10.2.0.199 - however we have dhcp configured to exclude the range from dhcp ip dhcp excluded-address 10.22.0.1 10.22.0.200 how can this work station get a dhcp address if we have that ip range excluded from the dhcp pool?
The user is off a different switch that is a uplink to this distribution switch. Traceroutes shows that the problem is with the distribution switch.
Using a Cisco 1800 series router (1802) with IOS 15.1(4)M2.I am quite sure the following should somehow be possible in IOS, but I can't figure out how to do it ... :I have the situation that I need to bind specific devices by DHCP to the same IP range.
These devices (medical equipment, used in hospital) are all from the same vendor.So the first three octets in the MAC address (Organizationally Unique Identifier , OUI) are the same for each device. The next three are always 'unknown'.I know how to bind a fully known MAC address to a host ip or ip range , but is it somehow possible to do this by the OUI ?Like using some wildcard option.
I have configured a vlan interface on a 3750 switch. there is aprox 4Mb active traffic flowing through the interface, but when I do a "show interface vlan (vlanid)" the output show zero bits in and zero bits out. Its a typical L3 config with one IP on the vllan interface acting as the gateway for the VLAN devices. Is this a normal behaviur ? and if so is there any way to get the traffic in/out stats. The end PC/devices are connected to this switch via an L2 TRUNK and I dont have access to the L2 switch on which the actual devices connect. so cant get the real time stats of those interfaces.
View 2 Replies View RelatedFacing issue with 2960G switch , where its do not display "logging trap informational " in show running and show startup .where its showing all other levels from 0 to 5 and 7 after configuration and save commands. [code] after config getting saved , it do not shows in show runn or in show startup while for all other levels it do show the config lines .I tried the same on 12.55.SE release also but its same results . Is this a limitaion of this platform, is there any doc explaining the same for reference. [code]
View 1 Replies View RelatedI m having 2500 series router. when i boot router automatically get into router(boot)> . how to solve?
View 6 Replies View RelatedHave a client wanting to hand out public ip addresses to all clients from a PFSense Firewall terminating the internet connection.
How do I allow the Cisco Switches currently in place, configured with private ip addresses in the 10.10.x.x ranges and Vlans, where the main 3550 layer 3 has defined dhcp scopes for each vlan, to relay dhcp requests from all vlans to the PFSense firewall?
I assume I would take off the currently defined dhcp scopes for the vlans and configure each vlan/switch with the ip helper address and specify the PFSense firewall and that Nat would have to be disabled onthe firewall?
My network generally runs older routers (2600 series) with 16 port switch modules (NM-ESW-16). This has always worked great since I can configure the router and the switch ports on the fly, making changes to either as necessary. Well I am upgrading to 2811 routers, and we wanted to get gigabit ethernet ports on our switch modules. I think I made an error when I purchased a few of these switch modules: NME-16ES-1G.
The first problem, is that the switch ports don't even show up on the router config, I have to establish a session into the switch, (And I can't seem to get back to the router unless I manually switch off power and restart). I don't like this type of switch module, it's like I'm running a completely separate device, and while having a layer 3 switch is cool, It doesn't let me setup routing protocols so I don't like doing it this way. I want to go back to using a switch module that simply adds a ton of ports to my router like the NM-ESW-16. (Note: The NM-ESW-16 does actually work in the 2811 and would be perfect if it were Gigabit speed.)
The seconds problem is that the NME-16ES-1G isn't actually a Gigabit switch. It has a single gigabit port, but the 16 ports are all Fastethernet, and not gigabitethernet. So ideally, I am looking for a switch module that I can fully configure from the router interface that has 16 gigabitethernet ports, and works with a 2811. IE I want to do this. [code]
I have a Cisco 881 router in my office and I would like to do port forward for port 5060, and 10000 - 20000 to my PABX(192.168.1.61).After I did some research from internet, understand that we need to NAT by using following command to do port forward for port 5060.
ip nat inside source static udp 192.168.1.61 5060 XXX.XXX.XXX.XXX(WAN IP) 5060 extendable.However, now I'm facing an issue to perform port forward for a huge range of ports like 10000 to 20000.It is impossible to ask me add one by one?
If I set a primary DHCP server in the interface configuration, or if I override DHCP in the WLAN Configuration.Which interface does the WLC use to try and connect to the DHCP on behalf of the wireless clients?IFA) The dhcp server is not on any of the configured subnets.B) The DHCP server is on a different interface's subnet.
View 4 Replies View RelatedCisco 2500 series access servers show line usage with the "show line" command:
View 2 Replies View RelatedI have an e4200 set up and working on fios as a pppoe router properly with a dozen devices connected to it via dhcp. The dhcp range i configured in the e4200 is 192.168.1 100 to start with, and a mask of 255.255.255.0.
All the dhcp devices connected to the router start with 192.168.1.1xx. My Dell Inspirion with Windows 7 has an ipv4 address of 192.168.15.2. I cannot figure out how it gets this address, even after I release and renew the address on the Dell.
Everything is working fine so I guess there is something I just do not understand.
I have 2 Media Bridges, a Trendnet TEW-640MB and TrendNet TEW-680MB. Both are set as a Static IP on the devices 192.168.1.150 and 192.168.1.151. In the DHCP table for my E4200 I don't see those. I have no problem accessing them typing in those IP addresses but wondering why they don't show up in the table.Actually looking at it more closely, the devices hooked up that are active seem to show up.So I see the following below. And where is list LAN but no name those seem to be devices connected to the media bridges.
LAN192.168.1.128 LAN192.168.1.129 iPhoneWireless192.168.1.130 1 Wireless192.168.1.131 LAN192.168.1.135
i am having an annoying issue with my wrt400n and my foscam FI8918W. in the dhcp reservation tab, the wrt400n doesn't show the foscam anywhere in the tab. it shows all laptops, cell phones, nases, etc. if i use the cisco connect software it does show it in the network map. i can probably add it manually via the gui. is this something normal or security cams not considered devices?
View 1 Replies View RelatedOn my old Linksys WRT54GL router (with its latest stock firmware)'s http://192.168.1.1/DHCPTable.asp for DHCP Active IP Table, it only shows wireless connections. How come it doesn't show wired ones?
View 5 Replies View RelatedI keep getting some additional IP addresses logging onto my home network that have an address outside what should be allowed by the router. The server is running at 192.168.2.1 and is set to only allow clients from 192.168.2.2 - 192.168.2.10 so a total of 9 clients should be allowed on.The problem is that something keeps logging in with an address of 192.168.169.2 or 3 etc. Sometimes more than one device at a time.I have assumed that it is some automated or virtual client as I'm pretty certain my network has not been breached. I have a 9 character password with a relatively random alphanumeric combination, although I haven't tried changing the password (I live in a share house with with a bunch of devices using wireless, so I haven't yet bothered). What I don't understand is how it has connected with the xx.xx.169.xx range at all. I have a Belkin 'Share' Wireless N Modem Router and at some stage there was a 'guest' network but that has since been disabled and I still am seeing the extra address. I have attached a screen shot of the DHCP client list on the router.The following is a list of devices that may be on the network at times, I'm thinking one of these may be responsible for the problem:
Windows Vista Desktop - Only LAN device
PS3
Macbook
Epson wireless printer
Android HTC Desire Mobile Phone
Laptops running various Windows versions (XP, Vista and 7)
A few thoughts I had:
- the android phone is capable of running a wireless hotspot, may have to look into it to see if if has been operating as an access point into the Belkin router, but assumed this wouldn't bring up clients connected to the phone on the home router.
- The desktop has PS3 Media server installed to stream video to the PS3 over the network (not that I have ever managed to get it to work), however this is not ever open on the desktop.
I have some DHCP trouble since I subnetted my network with a 2921. My clinets are in 172.16.2.0/23 and DHCP servers are in 172.16.5.0/24.Sometimes, randomly I guess, I get NACK from my DHCP server, and if I look into DHCP logs I got something like this:
15,11/09/12,09:52:27,NACK,172.16.3.172,switchE51D12.host.com,A0CF5BE51D12,,0,6,,,,,,,,
15,11/09/12,09:52:28,NACK,172.16.3.172,switchE51D12.host.com,A0CF5BE51D12,,0,6,,,,,,,,
15,11/09/12,09:52:29,NACK,172.16.3.172,switchE51D12.host.com,A0CF5BE51D12,,0,6,,,,,,,,
[code]....
E4200v2, firmware 2.1.39.145204
Router says "Invalid IP address" when I try to make a manual IP address reservation of the IP address range.
Example: local network 192.168.1.0/24, where .1 is a router, .2 is a reservation, .20-.50 is a range for DHCP.
Before upgrade I didn't have this problem.
I am a newbie to Cisco. I am trying to setup NAT with DHCP in our office on CISCO 819 router. I am having a problem with DHCP not assigning an IP on vlan1. I cannot figure out what i'm doing wrong. Below is my config and debug from DHCP.
router#sh config
Using 4328 out of 262136 bytes
!
! Last configuration change at 05:56:39 UTC Mon May 13 2013 by cisco
! NVRAM config last updated at 05:57:16 UTC Mon May 13 2013 by cisco
[Code]....
I have setup a 4500 series core/router.. the customer decided to run dhcp off the router for whatever reason... I have 20 different scopes handing out to their vlans. Does each vlan interface need an helper address?
vlan 1 on router is 10.85.0.1
i used the ip dhcp-server command pointed to 10.85.0.1
and then for ex.
int vlan 20
ip add 10.85.20.1 255.255.248.0
ip helper-address 10.85.0.1
i am now getting a loopback error on the router, and i believe this is the cause...
in my simple network setup, I cannot resolve DNS queries from inside my NATted network. On the router I can ping both IP-addresses and names. Ping from the local machine works for IP-Adresses but not for names. When doing nslookup, addresses are not found and a SERVFAIL message is returned. I use a Cisco ISR 861 Router to connect our local LAN to the Internet (The WAN of the 861 is connected to another DHCP/NAT-Router, which in turn connects to the ISP-Modem). Addresses in the local LAN are DHCP-distributed, the DNS-Servers from my ISP are configured on the Router and the DNS-Information is distributed correctly to my local LAN machines (as I can verify by doing nslookup on Linux).
View 21 Replies View RelatedIs it possible to configure an 881 router to act as a DHCP server to 4 VLAN's each with a different scopes all through a single ethernet interface?
View 2 Replies View RelatedI am going to get some wyse thin clients up and running on our departments. Each department communicate with the main-office through Cisco C1812 routers.
In order to get functionally DHCP up and running, I need to
A - Configure some Dhcp options on the C1812 routers
B - Perform a DHCP relay from each department to the main-office
Option B will cause some additional issues, so is not preferred.
The question is: Does the Cisco DHCP-client have an option for configuring DHCP options? I need to put in among others, an option 161, a string value pointing to a ftp-server. Can this be done? And if it can, what is the right syntax
I have recently started working here, therefore I am not certain of the IOS-version on the router, as I still not have the logon-information, but I will aqquire this shortly.
i'm interested if it's possible to set the NTP server via DHCP on an 2901 Router with 15.2(2) image.
i configured the interface gigabit 0/0 as dhcp client. The DHCP Server sends to me DNS, Default GW and NTP. All is working fine, but the NTP will not be configured. i tried to add an DHCP option request, but there is no NTP (42) value. [code]
is there any way to add the value NTP (42) for the DHCP request or isnt it possible?
I have a cisco 3560 24PS and its connected to two ADSL broard band routers.one is a personal broadband line using a Billion ADSL broadband router, and the other is a business broardband line using BT's 2wire broadband line.on the Billion routers i have various things attached like a NAS and a printers, both wired connections. then i have laptops and phones that connect over wifi, so its configured to act as a DHCP server
the only thing conncted to my 2wire router is my company's laptop (wired or wifi depending on where i'm working from), so again i have it working as a dhcp server.The switch is configured with multiple vlans, with dhcp scopes assigned for each vlan.I have a static route pointing all traffic to my Billion ADSL for internet connectivity.
The problem i'm having is that when i turn on the cisco switch, all wifi conected devices loose their conection. only 2 things get it working again, a reboot of the router, or disabling then enabling the DHCP service on the router.upon further analysis i was able to find out that the devices were not able to pick up an address from the router. again i looked deeper into this and i can see the following on logs of my router: [code]
so it seems that the router tuns off its DHCP capabilities because it detects that my Cisco switch is running DHCP services. I need to figure out how to keep the billion routers DHCP running when ever the switch is turned on.is there a way of filtering out any DHCP chat from the switch to the router?
i've got a Cisco 877 router connected to an ADSL link. i'm using the show dsl interface atm just to have a look on its performance. i've tried to search on Cisco website on how to interpret the output but a blog gave me more info [URL]. My question now is, what readings do i consider? is it on the left (ATU-R) or on the right (ATU-C)?
877ROUTER#sh dsl int atm0 ATU-R (DS) ATU-C (US)Modem Status: Showtime (DMTDSL_SHOWTIME)DSL Mode: ITU G.992.1 (G.DMT)ITU STD NUM: 0x01 0x01Vendor ID: 'ALCB' 'ALCB'Vendor Specific: 0x0000 0x0000Vendor Country: 0x00 0x0FCapacity Used: 31% 85%Noise Margin: 34.0 dB 10.0 dBOutput Power: 16.0 dBm 12.0 dBmAttenuation: 10.0 dB 6.0 dBDefect Status: None None Last Fail Code: NoneSelftest Result: 0x00Subfunction: 0x15Interrupts: 1453 (2
[code]....
I am running into a DHCP problem on a Cisco 891 running 15.0(1)M2. I am running DHCP on the router and want to reserve an address for a printer. I have done this hundreds of times on hundreds of routers. Per Cisco recommendation, I let the printer lease an address to see whether it uses it's "hardware-address" or "client-id". This printer uses the "hardware-address" format. The printer has leased 10.0.0.102 right off the bat. I want it at 10.0.0.50.
I have a DHCP pool, like this:
ip dhcp pool CLIENT
network 10.0.0.0 255.255.255.0
domain-name chsinc.ds
default-router 10.0.0.1
dns-server 10.0.0.1
lease 2
I create a "reservation" like so:
ip dhcp pool HP_LaserJet_Printer
host 10.0.0.50 255.255.255.0
hardware abcd.ef12.3456
Now I do a "show running-config" to see what I've put in and it looks just like above. Now we reset the network settings or change any network setting on the printer to force it to renew it's lease. What should happen and what usually happens is that the printer should request an IP, be offered 10.0.0.50, accept that IP and come up on that IP address. What is happening with this particular printer is that the printer requests a specific IP (the same IP that it had initially = 10.0.0.102), the router says OK and does not enforce the reservation. Then the router actually deletes the hardware-address config line right out of the running config. A "show running-config" shows that the reservation config now looks like this:
ip dhcp pool HP_LaserJet_Printer
host 10.0.0.50 255.255.255.0
See the logs below. Notice the ones in bold.
000226: Dec 12 17:34:01.382: DHCPD: Seeing if there is an internally specified pool class:
000227: Dec 12 17:34:01.382: DHCPD: htype 1 chaddr 101f.74b0.575c
000228: Dec 12 17:34:01.382: DHCPD: remote id 020a00000ae1e10100000001
000229: Dec 12 17:34:01.382: DHCPD: circuit id 00000000
[code]....
Is there a way to make the router enforce the reservation and not let clients just bring their own IP and actually make changes to the running-config of the router?
Is there a way I can check the version of each device on two Cisco 6509 if they are Virtually connected (VSS)? When I enter the command show version, it only shows one result, unlike show module, you have an option to choose which switch by entering 1 or 2.
View 3 Replies View RelatedI have encounterd a broplem on my Cisco 805 model.
When i use the command "show ip interface brief" the status shows "up" but the protocol is "down" on my serial interface.
The link between my to sites is down after this happend.
I did a sh inv on my newly built 2x Cat 3750X + Cat 3750-24FS stack running 12.2(58)SE2). It only showed 3 of the 4 Cat 3750X PSUs - Sw1 PSU 0, Sw2 PSU 0 and Sw2 PSU 1.
Switch#sh invNAME: "1", DESCR: "WS-C3750X-24"PID: WS-C3750X-24T-S , VID: V02 , SN: FDO*******D
NAME: "Switch 1 - Power Supply 0", DESCR: "FRU Power Supply"PID: C3KX-PWR-350WAC , VID: V01D , SN: DTN1533L00N
NAME: "2", DESCR: "WS-C3750X-24"PID: WS-C3750X-24T-S , VID: V02 , SN: FDO*******6
NAME: "Switch 2 - Power Supply 0", DESCR: "FRU Power Supply"PID: C3KX-PWR-350WAC , VID: V01D , SN: DTN1533L08M(code)
If it's possible, how do you protect/block a unauthorized DHCP SOHO router with NAT form a Cisco 3750?
View 16 Replies View RelatedI have a 3911 router with a 1242 AP. The problem that I have is that when the user is trying to connect, the user get the OS Ip address 169.254.168.154 and I see that when I do the "show dot11 association" command, but when I do sh ip dhcp binding on the router I see
172.19.9.141 0100.18de.74db.14 Jan 31 2011 11:14 AM Automatic
The router is seeing as if the router gave the ip address to the user, but the reality the user was assigne the OS ip address 169. I did "debug ip dhcp server events" and I got the following:
Jan 31 11:09:06.752 EST: DHCPD: Seeing if there is an internally specified pool class:Jan 31 11:09:06.756 EST: DHCPD: htype 1 chaddr 0100.18de.74db.14
Jan 31 11:09:06.756 EST: DHCPD: remote id 020a00000a58218400000000Jan 31
[Code].....
I've got a 5505 and I'm getting a DHCP address from a cable modem. How can I show the DNS that the ASA is getting? show int vlan 2 is only givving me the IP and net mask.
View 2 Replies View Related