Cisco Switching/Routing :: 877W - Removing NTP Line From Configuration
Jan 13, 2012
NTP server When I setup NTP server to take time from [URL] everything is working fine but as soon as I reset my router during boot I can see that router is first trying to get time before it's even connected to ATM and when it can't get time from NTP server it's removing NTP line from configuration (ntp server uk.pool.ntp.org source Dialer0 ). How I setup to wait with sync and do it once ATM connection is up and established? Or How to get IOS to leave this line and sync with NTP every 10 min)?
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Jan 19, 2012
Is the ADSL line interface on Cisco 877W not initialising a known issue? This interface on my router has been in this state for more than one month, with the rest of the router seemingly operational. The interface was connected directly to my ADSL broadband and worked well for two years. But then, about a month ago, the interface went down. I saw the exact moment this happened recorded as a syslog message. The only information was that the interface status had changed to down.
Initially I thought this was a matter of reload the router and all will be well. Did not happen. Then I thought my broadband connection was to blame. However, this option was quickly ruled out. So I went on to exhaust all troubleshooting options, including reflashing the router with the saved image and totally changing the configuration. Still no change. I have had to go back to my old BT home hub for internet access. In terms of speed this actually works a lot better than the Cisco router. But I would still rather have the router connected to my broadband line. What can I do to bring the ADSL interface back to life?
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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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May 16, 2012
I was working on adding a Cisco 6513 to TACACS but ran into trouble. While I work on the issue offline (recreate and test another switch), I wanted to place this switch on radius temporarily.
For some reason i cant undo/delete the AAA commands in order to point to my radius server. Below was done via console: [code]
I disabled my telemetry port on the Cisco 6513 as a precaution. The IOS im using is "s72033-advipservicesk9_wan-mz.122-33.SXI5.bin".how to remove the AAA authentication statement. Hope its not intrusive cause i have a customer on the box.
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Feb 24, 2012
I've created a BVI2 where I bridged dot11 0.2 and vlan2 in order to have wired and wireless clients in the same vlan.Some wired client are not reachable from the lan. Wireless clients have no pbl in reaching each other.Monitoring a MAC address that is supposed to be behind the FA2 I have noticed that it moves to vlan2 when in fact it should be behind the FA2.Of course when "show mac-address-table" says it is behind Fa2 the ping to that MAC address works whereas when the TCAM reports it is behind vlan2 it doesn't. Once the MAC address is behind the vlan2 if I clear the mac-address-table and that mac-address is still put behinf Fa2 then the pings works again, sometime I have to perform twice the clear command before the MAC address goes back to the right location.I'd like to understand why the router moves that MAC address from Fa2 to vlan2 and that's the reason for my question in the subject.I don't have any problems for port Fa0 and Fa1."Show int fa2" doesn't show any problem/errors or the likes.BTW even if I force that MAC address to be statically behind FA2 the ping works fine but then stops and if I do "show mac-add" the static entry for it is still there... so looks like there us something that overrides that static entry. If clear everything and I have the mac-address be behind Fa2 then everything starts to work again. I used Fa3 instead of Fa2 and I get the same results.
IOS: c870-advipservicesk9-mz.151-3.T1.bin
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Apr 29, 2013
Probably this is a trivial question but I have not found any response to it. What I would like is to set my cisco 877W rotuer up in order to act as a DNS server which forwards DNS queries following these simple rules:
1.- If the name is within my local domain *.ib forward them to my local DNS 172.21.238.229 and .230, and
2.- Else forward them to the chosen public domains (i.e. 8.8.8.8 and 8.8.4.4).
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Oct 30, 2011
We have a stack of 3 cisco swithes 3750s WS-C3750G-24TS 12.2(25)SEB4 .We plan to recover a switch from the stack as it is not needed any more The switch we plan to recover is the existing Master.If we change the priority (switch 1 priority) and make another switch the master using command line will we have any loss of connectivity to the servers conecting to the stack ?
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Sep 3, 2012
I have 2 x 3750's in a stack, switch 2 is the master. We only have 5 hosts in each switch so we decided to move all hosts into switch to and removed switch 1 as we need it elsewhere. Anyway all worked fine, but I wanted to tidy the config up as it was still provisioned so I removed the provisioning for switch 1 and the config was now showing ports 2/0/1 to 2/0/24, I then wanted to renumber switch 2 in the stack to 1 and saved the config to NVRAM and reloaded and then disaster the switch reloaded with it provisioned with 2 switches. Switch 1 was now the main switch with no config on ports 1/0/1 to 1/0/24, but the correct config was still on 2/0/1 to 2/0/24 so I just copied those ports over switch 1's ports and then removed the second switch and all was good, but I did this all wrong, what is the best way to un-provision a switch from a stack and change the master?
The more I think about it when the switch 1 member was removed should I of copied the port config from the switch 2 (master) first and overlaid it on ports 1/0/1 to 1/0/24, renumber then master form 2 to 1 then rebooted, then removed the 2 switch from the provision?
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Nov 25, 2011
We have dlink dir320 router and cisco 877W.
The goal is to make a 877W to work as a wireless client of dlink dir320 and brigde the LAN&WLAN so than the LAN clients of 877W could take DHCP from Dlink 320 directly.
Here's the config of 877w:
!
bridge irb
!
dot11 ssid DLINK_SSID
[Code].....
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Oct 27, 2012
We have a live stack with 4 Cat 3750 switches of mixed varieties. Switch 1 crashed the other day and didn't come back up. A power reset brought the switch online again, and switch 2 is now running as the stack master. We are going to replace switch 1 in a staged approach to minimise client downtime. Switch 1 is a ws-c3750-48ts and we will be replacing it with a ws-c3750g-48ts. I will be pre-provisioning and installing the new switch into the stack as switch 5 and configuing the ports to be the same as switch 1. The cables will then be moved over from switch 1 to switch 5 so the changeover time should be minimal. When all cutover, I'll power down switch 1, reconfigure the stack cables and remove switch 1 from the stack.
My question is to what occurs next. If I perform a 'no switch 1 provision ws-c3750-48ts' will I be left with switch 2 through to 5 (ie no switch 1)? I can live with this moving forward. I know I can renumber switch 5 to be switch 1 if I want, but my understanding is that I have to reload the member switch which is something I'd like to avoid at this stage. In my reading, I saw the statement - "Note: You cannot use the switch current-stack-member-number renumber new-stack-member-number global configuration command on a provisioned switch. If you do, the command is rejected." I'm a bit confused by this statement, I'm assuming that it is saying that if I do as above but don't issue the 'no switch 1 provision' command, I cannot renumber switch 5 to switch 1 but as long as I use the 'no switch 1 provision' command first, I can renumber switch 5 to switch 1? Will all of my switch 5 port configuration information and any associated references (eg port-channel configuration etc) be changed from gi5/0/x to gi1/0/x if I do renumber?
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Dec 4, 2012
I am a bit confused by the output of 'show run' and 'show run switch-profile' that pertains to a port-channel interface configured in a switch-profile. My main gaol is to find out how can I add/remove the allowed vlans the port-channel (configured as trunk) carries. The setup is like this. I have 2 N5k in vPC domain and Etherner1/11 on both switches is configured as trunk vPC that connects to a core switch. When I issue ‘show run’ for the port-channel and physical interface I get the following output. [code] From above it seems the switch-profile configuration is missing the 'switchport trunk allowed vlan' in the port-channel interface. If want I to remove vlan 30 from the allowed vlan, should I go under the switch-profile mode and remove vlan 30 from the allowed list even though the switch-profile configuration seems to be missing this.
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Nov 18, 2012
While i was looking around in my stuff in the office i have found a Cisco 877W ADSL router .. so i have decided to use it instead of the one i am using now which is provided by the ISP that's made by Huawei.Anyway i have a good knowledge about basic cisco router configuration but i had never configured ADSL Cisco router, so i looked around on Cisco website, and i was lucky to get this two linksCisco DSL Router Configuration and Troubleshooting Guide - Step-by-Step Configuration of PPPoA with a Dynamic IP Address - Cisco Systems[CODE]
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Apr 26, 2012
Looking to setup a backup router for our disaster recovery plan. We currently have a Cisco 877W that was setup by our ISP. I can log into the device with Telnet and a console cable, but I am not good using IOS commands, so I would like to use CCA. Unfortunatley, I cannot access the router using the software. I assume something is disabled in the config. Like HTTP or something.
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Jun 10, 2013
Is there any way to have my Cisco 877W Router alter from using one static route to another static route when another router on the network is reporting destination host unreachable?
Router 1 (192.168.2.253)
Dialer0 -> ppoe to internet
Vlan1 -> local 192.168.2.0/24
Router 2 (192.168.2.254)
Dialer0 -> ppoe to managed VPN (172.16.28.1)
Vlan1 -> local 192.168.2.0/24
Router 2 is connected to another network through a managed VPN and that network also has internet access. I want to be able to have two routes to the internet on Router 2. And when Router 1 internet goes down packets get routed through the VPN instead.
I currently have on Router 2
ip route 0.0.0.0 0.0.0.0 192.168.2.253
ip route 10.0.0.0 255.255.255.0 Dialer0
ip route 0.0.0.0 0.0.0.0 172.16.28.5 250
Which does nothing when Router 1 has its Dialer0 interface shutdown, or goes offline completely.I suspect I could reverse the setup and have everything routed through the VPN by default and then if / when Dialer0 interface goes down it would switch to using Router 2, but if the problem is in the remote network and interface Dialer0 stays up, it would probably do the same thing... nothing.All devices mentioned are Cisco 877W routers with ADSL and a bunch of fast ethernet interfaces.
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Jan 10, 2012
ws-c2960-24tt-L Ethernet switch adding or removing any device from switch cause a loss of connection to all other devices on switch for about 60sec.
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Nov 15, 2011
I just read the Removing and Installing CompactFlash Memory Cards in Cisco 2800 Series Routers instructions and there was nothing said regading powering down the router. Are these CompactFlash cards hot swappable??
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Jun 19, 2012
how to clear vty line? Please see below. A sh tcp <line number> shows that the TCB is waiting for TCP Process. The TCP processs TCB is waiting for is SSH. I believe because of this ssh process still running, the vty line cannot be cleared.
sh users
Line User Host(s) Idle Location
1 vty 0 pf 10.10.20.8 9w1d 10.10.1.54
2 vty 1 pf 10.10.1.16 35w0d 10.10.1.54
3 vty 2 pf 10.10.1.16 1y14w 10.10.1.54
[code].....
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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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Mar 20, 2013
I'm configuring a new 2911 running c2900-universalk9-mz.SPA.151-4.M4. In the config by default is "line 2" its not a vty, aux or console line and I can't remove it.
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Feb 14, 2012
I have a Cisco 4500 Sup 6 engine and I have two 48 port fiber line cards installed. When I do a show interfaces I do not see any of the Fiber cards. This is a new out of the box 4500 and I installed the Sup 6 Line card in Slot #1, And the two 48 port Fiber cards in Slots 2 and 3. Am I missing something, is there a command or set up procidure for the line cards. I just assumed they were plug and play
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Jul 17, 2012
I have two data centres connected via a L2 DWDM, my manager wants to look into using OTV to get rid of the layer 2 broadcasting issues.
Problem is the DWDM is 1000BaseSX, which is only supported on the N7K-F132XP-15. (and the N7K-M148GS-11 but that doesn't support FCOE, so many bloody caveats). From what I can gather OTV is not supported on the N7K-F132XP-15.
Is it possible to terminate the DWDM on the F1 card & loop another port from the F1 to a port on the N7K-M148GT-11 & run OTV on the M1????
Either using VDCs or just an isolated VLAN on the F1. Is there any better way to do this? Hardware has not yet been purchased.
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Apr 2, 2013
We need to move some line cards around on our 4510. The top slots have a 24Gbps backplane while the lower slots are limited to 6Gbps. Poor planning on our part has left us with installing a 10Gb line card in one of the bottom slots. I'd like to move a couple of the cards up top, to the bottom.
My question is simply will the switch magically preserve the configuration for those cards and change the slot number for me or will I need to reconfigure the interfaces for those cards I move?
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Oct 18, 2012
I urgently want to replace a faulty line card WS-X6748-SFP with a new one. The switch concern is a 5609-V-E operating in Virtual Switching System mode.How long do you suggest the down time will be?
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Feb 4, 2013
I have a requirement to upgrade some line cards in our 4510R-E chassis to ease some oversubscription due to the 6Gbps limit.
At the moment my plan is to upgrade three cards from WS-X4548-GB-RJ45 to X4648 to get the 24Gbps per card.
Supervisors are 6-E
1. Is this a viable plan?
2. If so can the cards be hot-swapped?
3. Would the new cards retain the existing interface settings of the previous cards?
4. Any gotchas to look out for?
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Jun 30, 2008
Cisco Catalyst 6509 Chassis.We have moved a line card from slot 8 to slot 6, but config remains for the line card in slot 8 and nothing is seen in slot 6.
We are running on IOS Verison 12.2 (33SXH2A) i.e. VSS.Blade model number is WS-X6748.
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Mar 20, 2012
when replacing a line card on a 6500, i gather there is no config stored on the card, its all held on the sup, so when i put in another card the config will be the same?
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Aug 27, 2012
I work for a Wireless ISP and the device impacted is the back haul radio into the site. I have swapped from a 2950T to a 3550. Replaced the radio, PoE, patch lead. We have re ran the cable up the tower using shielded outdoor cable with a drain wire which has been earthed to an earthing block in the cabinet. We have other devices on the tower not experiencing the issue. We suspect cable interference however am now at a loss to diagnose further.
[Code]....
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Dec 27, 2011
We have two devices connected through a several miles DWDM connection (two switchports 10GBSR).We would like to measure the delay for that connection.
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May 11, 2012
I would like to know whether WOL is supported on a N7K with 6.x code and F2 line cards. I also would like a how to for this. If it is not supported will an ip helper address to the broadcast address of the destination vlan SVI will suffice to get it workinng. If so I can restricht the forwarded broadcast to only the wol traffic.
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Aug 29, 2012
I read the document, [URL]
[
Q.I have Cisco 6700 Series line cards today with Centralized Forwarding Cards (CFCs). Are these line cards supported in a Cisco Supervisor Engine 2T system?
#
A. A Cisco Supervisor Engine 2T system will support all Cisco 6700 Series line cards with CFCs.
]
So, As long as the 67XX line card is using CFC, it is compatible with Sup-2T.
I also find the IOS release note indicate the 6704-10G with CFC is supported by Sup-2T, but it require 512M memory.
[URL]
The bug details is not disclosed. So I further search what the default memory size of the WS-F6700-CFC is, then I found here says it is only supported by Sup720 and no memory upgrade option, which means must upgrade to DFC4, in another words, it is not compatible with Sup-2T
[URL]
WS-F6700-CFC:
Centralized Forwarding Card (CFC) for use on WS-X67xx Ethernet modules. This daughter card is supported only by the Supervisor Engine 720. There are no memory options for this daughter card. default memory: 256M
So my question is: whether “WS-X6724-SFP with CFC” and “WS-X6704-10G with CFC” compatible with Sup-2T without upgrading to DFC4 daughter card, and do they support in VSS-2T?
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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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Dec 7, 2011
Is it possible to configure the switchports on a 6500 linecard before it has been inserted?
So for example, I have a 6509 with slot 9 free. I'm going to install a 48 port line card. Is it possible to configure those 48 ports before the card is inserted?
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Apr 14, 2013
I wanted to know that in nexus 7009, can i use mix of F2/M1/M2 series line cards ? will they work with each other ? Lets say i have F2 line card and M2 line card, will servers attached to them will communicate with each other ?
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