Cisco Switching/Routing :: 1720 Router Not Saving Configuration
Aug 15, 2012
I currently am trying to program the config for a 1720 router however i cannot get the config to stick. I boot up to the command prompt put in all the configurations use the "write mem" command and then hard reset the router but when it boots back up I get the initial system configuation dialog.
I have tried booting to the rommon prompt and typing "confreg" and following the prompts keeping all options set to no except for this setting
"enable "ignore system config info"? y/n [n]: Y"
Is set to yes. but when i get to the end of the config it just loops and starts over with
"you wish to change the configuration? y/n [n]: Y"
If i choose yes it loops if I choose no it goes back to the rommon prompt.
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Nov 10, 2011
I have a 1711 Catalyst router hooked up behind a cable modem. I configured the router, copied running-config to start up-config then wrote it to memory with "write mem". I unplugged router to move it and when I plugged it back in, I had to start from scratch.
Is this normal, or should router be able to save configuration if powered down?
BTW, I'm using Putty to access router console. Is that the hot setup for Windows 7 or is there something better?
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Jan 18, 2012
I have a Cisco 850 router that whas having problems getting an ip address via DHCP. I did some stuff on it but that didn't work, so I rebooted the router to go back to my last saved startup config. When I turned it back on and connected t othe CLI console I got the "Would you like to enter the initial configuration dialogue?" message. Thinikng I just forgot to save anything to the startup config I went through the initial set up again and made sure to save everything to the startup config. After going through the intial config and setting up a vlan to assign DHCP to clients I saved the config and rebooted, upon reboot and connecting to the CLI console I got the same "Would you like to enter the initial configuration dialogue?" message. Tryign the setup once more and making sure everything was saved to startup config I rebooted again just to make sure the changes would stick, and sure enough they didn't. Whay is the config not saving to the startup config?
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Mar 30, 2013
I am currently working on a project which requires extending a VLAN over WAN. The equipment I currently possess are:
-2 CISCO 1720 Series Routers (1 Serial & 1 10/100 Ethernet per router)
-2 Paradyne DSL Modems (1 Serial & 1 RJ-11 per modem)
The two sites are about about 1 KM apart.Trunking between the two sites is not possible since:
- Maximum available length of CAT 5, 5e and 6 are 100m.
- Laying a Fiber Optic cable of any kind is not possible since the terrain is extremely rough and would not allow it. Also, there is no existing infrastructure to allow re-using of old Fiber Optic Cables.
- Using a Microwave Transmitter & Receiver did not work. Atmosphere is too humid and too dusty to allow it. A minor success was achieved but only limited to small ICMP packet exchange. Data transfer failed immediately.
I am well aware which routing protocols are used to achieve trunking and inter-VLAN routing. Also, I am also aware that this question might not have an answer because a router would BY DEFAULT not forward any packet to the WAN whose destination address is currently connected to its LAN. It would either drop the packet or just won't pay any attention to it.
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Feb 9, 2012
I have CISCO 1720 with WIC 1 ENET installed. My ISP provides 20 Mbps internet bandwidth
Do I need to change the Ethernet interface to 100? .. if yes, what interface model should I use?
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Nov 21, 2011
I was configuring a new Catalyst 2960 switch and had forgotten to set the speed back to 9600 after downloading the new IOS software image. I finished doing all of my configurations and went in to line con 0 to change the speed back to 9600. The change was accepted and I did a 'wr' to save the change, but when I reload the switch it is back to 115200.
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Oct 8, 2012
I'm having 1841 Router, its configuration is not getting safed. If I reboot the router all my running-config is like default. But when I check my sh startup all the configuration which I did is displayed. Checked the config-registery too and its 0x2142 changed too 0x2102 still the same problem, when reloading the router all the running config is disappeared.
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May 3, 2011
I have a couple of SF300-24 switches. When I made needed configurations using CLI or GUI and then saved all configurations. The problem is that switches do not save configurations after reboot.
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Apr 10, 2011
I have a number of SFE2000 10/100 24 port POE switches. They are configured and running OK. I want to be able to save the configuration and be able to load that saved configuration into another new swich in the case of a failure.
I have logged in and gone to Admin-File Management-Save Configuration. I then select the 'Backup' radio button and TFTP the configuration to my TFTP server. All works OK and I have a readable text file with the switch configuration on my TFTP server.
I want to be able to restore that saved configuration on to a new switch. I have set the new switch back to factory defaults. I go to Admin-File Management-Save Configuration. I then select the 'Upgrade' radio button and try and uploade the file into the switch. If load to 'Running Configuration' the switch shows a status of 'Copy Finished' but says 'Copy completed with errors' If load to 'Startup Configuration' the switch shows a status of 'Copy Failed' and says 'Copy completed with errors'
I am guessing I should be able to load my saved Configuration back into a switch, shouldn't I??
And yes the switches are running the same firmware 3.0.0.17
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Feb 3, 2013
I'm running LMS3.2 and RME 4.3.1. I deployed a netconfig job to our network which consisted of approximately 800 devices.The report said that the job completed successfully however some of the devices didn't save thier running config to startup.
Is it possible to add a command or issue another netconfig job just to save the running config, so I can identify if the job fails on some devices? Using the tick box in the netconfig job doesn't seem to alert you if its not successful.
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Oct 7, 2012
Using the SGE 2010 for Microsoft NAP with 802.1x auth for switch access, which led to a few issues
What i have: An SGE 2010 48 port switch, firmware 3.0.0.17 Firmware upgrade: In order to ensure im not having problems due to old firmware, i tried to upgrade using ros_ls1_bp_ge_bx-3020.ros in order to move to 3.0.2, when uploading the file via TFTP, the upload completes and thats it, nothing happens.Restarting the device: As part of the upgrade process, i thought i might of had to reboot, so i rebooted, and found that all my settings were wiped clean, as if a factory reset had been performed.... and add further to pain, the backup of settings that i had taken do not seem to want to re-apply.NAP support: So i have tested my NPS (radius) server with NTRadping.exe and all is good, however i cannot get the SGE2010 to talk to it.... the authenticator state in the web interface is always listed as initialising.... im not sure if this is a simple incompatibility (hence the attempt at a firmware upgrade), a tag that needs to be set on the radius side or a switch misconfig.
1) how on earth do you upgrade the firmware?
2) why are none of my settings being saved when the device reboots ?
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Oct 3, 2011
When I try to save the configuration it displays the following error.Is it due to insufficient memory?
MPF-ASA#wr mem
ERROR: % Unrecognized commandMPF-ASA(config)# wr memBuilding configuration...Cryptochecksum: 81c514b8 9e95ee97 8b512148 b31377a4
[Code]...
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Aug 31, 2011
I have just got a cisco 1720 router and set it up for my internet connection.I have a cable modem and when running on any previous cheap firewall I could pull about 15 meg download.Now I can only pull about 9.3 meg download.But saying that does not really explain it well as there is a serious lag when I go to a page even like google. When I go to my android phone and download updates, it downloads them one at a time - before putting in this router the updates would come in all at once - not one at a time.
The cisco has an addin 4 port switch which connects to my network.I am connecting the cable modem to the built in fast ethernet 0 interface.
I am not that good with Cisco so I may be doing something completely wrong but don't know where to look.Here is the interface commands I have used on the external FastEthernet0 interface, [code]
Oh by the way I have set the duplex and speed settings to auto but seems to make no difference.
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Jul 17, 2012
I am position to migrate from CatOS 6509 switch to native IOS 6509 switch. long time ago, there was some site to convert automatically based on copy and paste onto the tool, but i can not find.
Does anybody know how to convert CatOS configuration to Native IOS configuration ? It is not IOS change, but it is configuration convert.
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Jun 13, 2012
about to install first UC320w and wanted some sample 800 series router configurations showing required port fowarding, ACL entries and QoS examples.
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Mar 27, 2012
I have recently configured a cisco 1921 router for internal routing on my network. Here is what i am trying to accomplish:
Main network 10.65.1.0 mask 255.255.255.0- all office devies and computers.
Second network 10.65.2.0 mask 255.255.255.0 - All plant equipment machinery and production lines
i have configure gig 0/0 for my company network and gig 0/1 for my plant network. I can ping the router from both networks but am unable to route traffic betwenn them. what am i missing?
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Feb 11, 2013
Im using a 2801 router with a nat configuration.
The issue im having is the nat seems to be allowing only one machine at a time through the nat.
the range i am testing is 192.168.243.0
The firmware is c2801-spservicesk9-m
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
[Code].....
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Dec 2, 2012
the router IPSec VPN config for remote users using Cisco VPN Client 5.0.07
Router 3945 IOS C3900-UNIVERSALK9-M Version 15.1(4)M4
Here is VPN related config part and log from router and client.
aaa new-model
!
!
aaa authentication login default none
aaa authorization network default none
!
!
crypto isakmp policy 5
encr aes 256
authentication pre-share
[Code]...
I highlighted strings with possible problems of of unabling to connect but doesn't know what to do with it.
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May 21, 2013
i have floor with 10 users with DATA vlan and VOICE vlan , WIRELESS vlan , my questions :
Basement floor Core switch fiber -----> my floor switch <--------my internet DSL router827
- In this scenraio the switch in my floor will be as L2 or L3 ?
- What is the configuration it will be in the switch if it is L3 ?
- What is the configuration it will be in DSL router with Subinterfaces for each vlan ?
Any sample for configuration that can work for switch nad DSL router ?
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Jun 12, 2012
I would like to define a general policy for our company to set the log buffer ("logging buffered xxx"). Currently, most of our configs use the default value of 4096, which does not store much of the history. I'd like to see more, when logged onto a router. We are using different router platforms (from old 1700 up to 39xx oder 72xx) Can you give me any hints, how large the buffer can be set on a platform? Which checks should I do to determine, how large I can set the buffer?
Here's an example of a Cisco 1720 router:
Cisco1720#sh mem
Head Total(b) Used(b) Free(b) Lowest(b) Largest(b)
Processor 81AECE9C 17803244 5548816 12254428 12010916 11815908
I/O 2B43000 4968448 1560416 3408032 3374144 3396668
Cisco says: "Total = the total amount of memory available after the system image loads and builds its data structures."So, in this example, the total bytes are 17803244, which is ~ 16.9 Mbyte. So, if I allocate 64000 bytes, my total buffer will decrease to ~16,3 Mbyte.
I my calculation above is correct, I see no problem in defining a standard value of "logging buffered 64000" for every router platform - even under high load conditions. Since 64 kbytes is a very small value compared to the total usable memory of a Cisco 1720, newer platforms should not have any problems either.
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Jan 11, 2012
I am new user of cisco router i can access the hardware and login in the account but the problem is if i use the command "enable" asking for a password, old I.T. personnel who setup this router already resign.
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Sep 23, 2012
my trouble is I have a cisco 857w and I have never configured a wireless config for a cisco router before. Ok so i have had a go through the web interface (i know, last resort) and still no joy
Basically what im looking for is to have a visible (broadcast ssid) network with a password (WEP/WPA/WPA2, not picky) and it to be joined to the same vlan as the ethernet ports (VLAN 1).
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May 22, 2013
I have a Cisco 2811 Router. I have two VLANS on the router. The first one of course is VLAN 1 and the second one is one that I created from reading everything from this forum.. it is called VLAN 531
On VLAN one I have an IP address of 10.8.1.1 and on VLAN 531 I have an IP Address of 172.16.1.1, now what I can do is this... I can.. from a workstation on the 10.8.0.0 segment, ping 172.16.1.1 and one server on that segment that has an IP address of 172.16.1.50, which is fine, but what I really want to be able to do is ping our email server which is on a 10.21.0.0 segment and I cannot. Any commands on what I would need to do to make this work as I would like the 172.16.0.0 segment to ping any other part of my LAN of my choosing.
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Dec 9, 2012
Here is my current config, how to enable and setup NVI on a cisco 1941 router.i think it would fix my issue but i'm unclear on how to implement it to test.
i would like to be able to access an internal server from an outside address.
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Dec 9, 2011
Will 2811 Router with 4 switch port module, How to do dual ISP configuration on this router.
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Oct 3, 2012
i have to configure 80 Cisco 876 routers, so i planned to copy config via tftp from one configured router to PC, edit it in text editor (change ip addresses, dhcp pools, vpn keys...) and then copy it via tftp to another router, etc... Configuration looks fine and it works when i paste it in cli, but when i copy it via tftp i'm getting strange problems like dhcp not working or snmp not accessible. Am I missing something.
Here's config from router with dhcp problem:
ROUTER#sh run
version 15.1
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service sequence-numbers(code)
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May 5, 2013
I have customer that we have configured netflow on the 2821 router that their traffic is on. Currently the company they have contracted with for the analysis is seeing data duplication. Below is the configuration for the interface and the router
Cisco 2821;
interface GigabitEthernet0/0
description TVC-FI-Ethernet-Fiber-Ethernet link
ip address 216.255.164.33 255.255.255.248 secondary
ip address 192.168.5.1 255.255.255.0 secondary
ip address 216.255.166.129 255.255.255.128 secondary
[code]....
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Feb 27, 2013
I have not been able to figure out the resolution. The basic premise is to have 3 inside vlan networks controlled by a 1900 series router. Then have that primary LAN router connect to the inside of my ASA5505 Basic, then go out to my ISP Gateway. I have tried hundreds of different static route configurations on my router and asa. I have tried equally as many NAT and PAT configurations, but nothing seems to work. I have even tried using all the commands (specific to my topography of course) on this weblink from cisco: url...
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Mar 3, 2013
i am currently using 2 DSL WIFI modem and wants to combine them to my RV042 dual wan router but as i set them up using WAN1 and Wan2 as "Obtain IP Automatically" there is no internet connection?
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Jan 4, 2012
I have an 877W router that I would like to have a 2nd pre-configured backup for. I was thinking of getting another 870 series (probably an 877) router, as the more expensive wireless option is not actually required. Am I right to assume that I could simply copy the contents of my current config.txt file onto the second router?
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Jul 5, 2012
I've recently purchased a Cisco catalyst 2960S-24TS-L & setup 3 V LANS 10 (no current IP),20 (192.168.2.1) and 30 (192.168.3.1) to reflect the router V LAN configuration & ip information. When connecting my PC to the switch to test connectivity on (2.1 & 3.1) I'm unable to connect to the the net but can successfully ping GW (int FE0.20 & FE0.30) 192.168.2.1 & 3.1.
The router is an Cisco 1801 & it seems this is where the configuration issue is but I'm unable to figure out how to complete the setup. It has been quite awhile since I've configured a Cisco router.
Ive never had this router connected to a switch so all router switch ports are in the default VLAN1 (192.168.1.2), with FE0 disabled. In trying to get the switch to communicate with the router I made the following router config modifications.
FE0 enabled with subinterfaces configured
FE0.10-currently no ip
FE0.20-192.168.2.1/27
FE0.30-192.168.3.1/27
I have two issues I want to resolve:
1) I do not know what additional steps are required to allow 2.1.& 3.1 V LANs to access the net.
2) I want to disable VLAN1 if possible & use the network IP for VLAN10 (192.168.1.0). I'm unsure how to do this as any change on VLAN1 immediately breaks router access and the router reconfiguration becomes more complicated with changes to the FW ACL etc.
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Mar 6, 2013
I have 3com router and it is working fine. The issue is that when I am taking the router out of the electricity and reenter it back it will not save my settings and I will have to log in again to change the settings.
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Jan 6, 2012
Samsung blu ray BD5700 is not saving the security key to my cisco lynksys router model E1000 after blu ray is powered off. I have spoken with samsung and followed their reconfiguration instructions which did not work. They suggested something was wrong with my blu ray player. I returned the blu ray to the store and exchanged for the same model hoping it was a problem with that device but the new blu ray is doing the same thing. I spoke with cisco lynksys support but they won't assist b/c my lynksys customer support has expired
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