Cisco :: C3750 / IOS - Set Ports To Auto-negotiate In Bulk?
Jun 28, 2012
Building was recently upgraded from cat3 to cat6 wiring and I'd like to ssh into each Cisco C3750 stack and change every port on the stack to autonegotiate. I can release each port one at a time by doing "no speed" and "no duplex" after selecting each port (interface fastethernet x/x/x) , but it's taking forever as there are many stacks and each stack has a number of 24 and 48 port switches. The stacks are a mix of fastethernet and gigabit ports (C3750 and C3750G switches) if that changes anything command wise.
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Apr 1, 2012
I see the 2500 porst are 1 Gigabit ports. Are they 10/100/1000 ports though?Have an older switch that only has 10/100 ports.
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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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Mar 14, 2013
I have already exploited Metro Ethernet, but I don't understand why auto-negotiation does not support for Ten Giga ports?
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Feb 8, 2012
We've just purchased a WS-C3750-24FS-S, only to find that the 100baseFX ports will not work over Single Mode fibre, backhaul links. Any way or a device that convert from MM to SM?
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May 4, 2012
I have about 1400 devices in LMS for this one customer.
They have 1200+ IOS devices
200 + catos devices
My problem is we use 2 differnt change scripts in Config Editor for IOS and CATOS. I have a list of all of the IOS and CATOS devises in txt format.
Is there some magical way to just upload the txt files into Cisco works instead of searching for them during the Config Editor batch job creator? I find it takes hours to sort this batch job out
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Mar 9, 2011
Customer is running acs4.2 and need to upload thousands of mac addresses in ACS database for MAB. how can this be done? does cisco suport csv file import in acs4.2 or any other utility?
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Mar 16, 2013
I have a cisco 887 router and I have tested on two different DSL line. The first line it worked fine with while the other noe is not. both line on same exchange and establishing the ppp session with same BRAS. The debug seems that there Establishing phase failed, but my question here is how our BRAS will faied the establishing from on line while from other landline is working fine.
=============================================================
CISCO ROUTER Configuration
=======================
interface ATM0/1/0no ip addressno ip mroute-cacheno atm ilmi-keepalivedsl operating-mode autopvc 8/35encapsulation aal5mux ppp dialerdialer pool-member !interface Dialer1ip address negotiatedip nat outsideip virtual-reassemblyencapsulation pppdialer pool 1ppp chap hostname companyxppp chap password abcda123ppp pap sent-username companyx password abcda123
===========================================
when I did ppp negotiation debug the below messages i got:
============================================
Mar 16 13:19:18.103: Vi2 PPP: Phase is DOWN
Mar 16 13:19:19.103: PPP: Alloc Context [85DEC77C]
Mar 16 13:19:19.103: ppp28 PPP: Phase is ESTABLISHING
Mar 16 13:19:19.103: Vi2 PPP: Using dialer call direction
Mar 16 13:19:19.103: Vi2 PPP: Treating connection as a callout
Mar 16 13:19:19.103: Vi2 PPP: Session handle[700001C] Session id[28]
[code]....
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Aug 17, 2011
We have created a sample configuration for ISRG2 2901 Router. The sample configuration is long, and with copy/paste it is possible to skip some lines, and it is difficult to ensure the configuration of every device is standardized due to this error possibility. What we are trying to achieve is first create a template from this sample configuration file, and then create configuration files for each device seperately and automatically. After creating this configuration instances, we want to be able to distribute the configuration files (and possibly the ios) to the devices during the staging phase. Since there are about 1000 2901 routers, creating configuration files is important?
From searching we have found the following tools:
1) CCE (Cisco Configuration Engine): This tool seems to be very efficient for distributing the created configuration files. We may use the serial number of the device, and it provides almost zero touch provisioning of the configuration files to the devices. Creating the configuration file from the template seems to be manual, i.e enter the ip addresses of the interfaces, the routing tables one by one for each device. How can we use velocity template for device configs?
2) Ciscoworks LMS Prime: It is possible to create a baseline template for the devices, and after getting the backup configuration of the routers, it is possible to compare the actual configuration of the device with the baseline template, and understand if there is any difference with each other. This is indeed very useful in order to keep the configuration standardized, we again could not find a way to create bulk configuration files from the baseline template.
3) Solarwinds Config Generator: This tool is useful for creating a configuration file from a template, but again not for automatically creating configuration files, and needs manual intervention.
4) Excel Macro: It seems that some people have achived to automatically create configuration files with using an excel macro, but we could not find a procedure or tip of how to achieving this.
5) Pearl or TCL/TK Script: Again since we are not software developers but from networking field, it is difficult to achieve a working form of this scripts or codes due to to lack of documentation and development experience.
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May 9, 2012
I have new 1262 APs, this have Gig Interface, when I connect the AP in my 6500 with PoE Gig Interface, the AP turn on, but the interface never get up. I need to change the speed to 100 in the 6500 switch port, when I do this, the interface become UP.
This is the model of the card WS-X6148A-GE-45AF This is the Switch IOS s3223-ipservicesk9_wan-mz.122-18.SXF11.bin
The controller is 5500 version 7.2
This is the interface config:
interface GigabitEthernet4/36
switchport
switchport access vlan 308
[Code].....
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Apr 22, 2012
I am trying to set up a site to site VPN tunnel using GRE over IPSEC. Below is the configuration from both routers and debug output. I'm scratching my head on this one. I'm using two Cisco 7600 routers with SSC-400 SPA modules and 720 Supervisors. The IOS on R1 is 12.2 SXI2 and R2 has 12.2 SXI3.
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May 9, 2013
Why I can't get the "cdpInterfaceExtTable" by SNMP ? The other CDP info are correct, only this table is empty.
I found the configuration method in CLI:
interface GigabitEthernet3/0/13
switchport priority extend cos 5
interface GigabitEthernet3/0/14
switchport priority extend cos 5
But I still can't get anything back when I walk this node,
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Dec 10, 2012
I was thinking of upgrading the IOS of a number of c3750 stack (roughtly about 50-100 stacks around the country)...I would like to know is this feasible?
My CiscoWork NMS is connected with a low bandwidth (2Mbps) management link. I was thinking if I upgrade via CW2k, then RME will take "ages" to push the IOS to the stack, right? Is this feasbile for 100+ stack of switches?
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Jun 9, 2013
We have an ASA 5505. 5505 comes with two default vlans 1&2 with each of them marked as inside & outside respectively.My query is , if i do not want to use vlans on 5505 and only want to use the Ethernet ports as pure physical layer 3 ports, is it possible?i.e. i want to assign a layer 3 ip address on eth0/0 and eth0/1 and make them as the inside & outside interfaces rather than vlans. is it possible to do away with vlans in 5505 & will it work otherwise?
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May 14, 2013
Is there a way to associate spare firewall ports with another port that is being used..For example...int gi 0/2 is being used currently for my web dmz. Its ip is 192.168.10.1..Is there a way for me to associate gi 0/3 with the same layer 2 as gi 0/2 ?
In my webdmz I use 2 ACE 4710 proxys in FT mode. I used a layer 2 switch to connect firewall and proxys together.
I would like to eliminate this switch if possible..and connect both 4710's (layer 2) direct to firewall.If I could make gi0/2 - 4 part of the same vlan, then I would be good to go.
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Mar 5, 2012
I have a VMware workstation on my host computer (windows 7) and the VMware workstation has a virtual machine (windows 7) on the host. We were trying to allow internet access only to the Virtual machine, i.e. to minimize exposure of the host to the internet. I tried to use Vlan Access Control list with MAC ACL to deny the host virtual machine from accessing the internet and allow all other traffic including the virtual machine. The configuration works for some time and after some time when the virtual machine continously pings the c3750 switch (wher the VACL is implemented), the host also pings the c3750 switch and re-establishes connection with the internet. But when we configured the c3750 switch to deny the VM and allow all other traffic, it works fine. It seems like the host automatically finds a way to get arround the VACL.
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Jan 29, 2013
I have a switch cisco c 3750 that has vlan information, how to remove vlan information.
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Nov 6, 2011
I have WS-C3750-24PS version 12.2(55)SE4. I am configuring PBB VPLS. MY PE/P routers are alcatel 7710/7750
my topology is like that.
CE1<-------> Provider_switch(3750)<-------> PE1 < ----IP/MPLS----> PE2<-------> Provider_switch(3750)<----------->CE2
16 11 11
[Code].....
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Oct 4, 2011
We have c3750s running NAC 4.8. Occassionally, a workstation will flap between the untrusted and trusted vlans. We updated the NIC drivers on the workstation, we verified SNMP was functioning correctly on the switch, and we allowed the phones to act as the pass-through between the workstation and the switch. What could cause the workstation IP Address to not redirect to a TRUSTED VLAN from the NAC_UNTRUST VLAN? All updates have been downloaded to the workstation.
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Jun 23, 2011
we have coonection between c3750 and wlc 5508 and it shows that mac address flaps between two interfaces of c3750. [code] two ports are trunking and one port is for management purposes and the other port is for the all other vlans. But it shows that it flaps always. And i think WLC uses one mac address for all device and not for port specific and that causes problem.
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Mar 30, 2013
I am having troubles to get 2 C3750-X switches WS-C3750-X-48P-L) to stack. They are both running iOS 15.0(2)-UNIVERSALK9, and are licensed for IP Base.
If I connect stack port 1 of switch 1 to stack port 2 of switch 1, and stack port 1 of switch 2to stack port 2 of switch 2 I get the following:
WS-C3750-X_STACK1_SW1>show switch stack-ports summary
Switch#/ Stack Neighbor Cable Link Link Sync # InPort# Port Length OK Active OK Changes Loopback Status
[Code].....
I have tried restarting (powering off for about 1 min and turning back on) simultaneously, and powering off switch 1 for 1 min and switch 2 for 2 min. I have also tried both enabling the stack ports, and disabling followed by enabling.
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Jul 8, 2012
I have 2 switches c3750 which I want to install in stack to replace two Nortel switch that I have in production.
When connecting my new stack of cisco switches to a cisco router c3750 to 2600, they begin to restart by itself. I mean, There is a cisco router 2600. which I want to connect to the stack of switches. The problem is that when the switches connect to the router it begins to restart.
If you need to see the running config of the cisco Switches or the 2600 router.
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Mar 11, 2013
I have a cable from an SFP module in a WS-C3750-48P with 12.2(55)SE1 running to a Gigabit port on a Cisco WLC. After the switch recovers from a power failure, the gigabit autonegotiation fails. The cure is a long drive to unplug and reseat the SFP. Note this happens at too many similar sites for this to be a loose connection. Interface shutdown then 'no shutdown' is not sufficient. The state is 'line protocol is down (not connected)'. Interface is configured for switchport mode trunk (auto speed, auto duplex). Command 'switchport nonegotiate' makes no difference. Is there a more powerful command than 'shutdown' which might toggle the interface signals? Is there some way of resetting the SFP? sh int gi 1/0/1 displays 'media type is 10/100/1000BaseTX SFP' and zero packets received.
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Apr 7, 2013
Prime 1.3 (POC testing), for testing purposes I discovered a class C range (255.255.255.0) containing a bit of everything (AP 1240, C3560 & C3750).When looking in the config archive only the AP's have configs stored, the others failed, snmp & telnet credentials are the same for the whole range, what could I do wrong ?
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Jan 2, 2008
I have this system: IOS (tm) C3750 Software (C3750-I5-M), Version 12.1(19)EA1d, RELEASE SOFTWARE (fc1
An error appear in console (many times in one minute):
Jan 3 16:25:37: %LINK-3-BADMACREG: Interface StackPort1, non-existent MACADDR registry for link 0
-Process= "<interrupt level>", ipl= 4
-Traceback= 20A364 187F04 58D6FC 58B950 2D7CE0 2E00C8 2E2BEC 2E2F24 2B0BF8
What is the problem? What is the solution?
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Jun 6, 2012
I would like to apply policing on a C3750 interface, for all traffic matching 10.0.0.0 / 8, except for sub net 10.0.0.0 / 24. I plan to apply the following configuration, with an ACL that denies 10.0.0.0 / 24 then accept 10.0.0.0 / 8. I am quite sure of the answer but need a confirmation about the following configuration correct ? (10.0.0.0 / 24 will be not blocked, and no policing will be apply on it?)
ip access-list extended TEST
deny tcp 10.0.0.0 0.0.0.255 any eq 5000
permit tcp any 10.0.0.0 0.255.255.255 any eq 5000
[code]....
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Nov 21, 2011
I have a stack of 2 C3750-switches (WS-C3750G-24TS-1U) with IPBASE-firmware (12.2(52)SE).
When I ping to a machine (in this case a virtual one), the replies are always received on the port where the machine is connected, but on the port-channel connecting to the stack of the 'pinging device' the reply comes only for certain initiators, and not for all.
Setting:
Gi1/0/6: Device/Server I want to connect too ; defined as access port
Gi1/0/25 + Gi2/0/25, as Port-Channel 1: The location of the devices I connect (read as: the uplink to the stack of the PC's), defined for Dot1Q-trunking
Monitoring setup: Source ports: Both: Gi 1/0/6, Po1 (or Po1 replaced by both interfaces)
For the machines which can ping the server I see 2 echo (ping) requests, followed by 2 echo (ping) replies ... So once seen on the Po1, and once seen on the interface Gi1/0/6.
However for other machines, the 2nd reply is missing ; which must be caused by the dropping of these packets in the switch. At least, I my opinion this must be the reason... But I can't see any (change of) output drops at int Po1, nor at Gi1/0/6. The CPU doesn't seem to have high usage, and even then, I don't think the error would be constant, as it's always failing for some PC's, and never for others... (at least for a certain time, a few hours it can be constant, the problem dissapears from time to time).
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Oct 9, 2012
We want design a topology based on transparent proxies using WCCP. Our proxies can do spoofing of user ip addresses. So, the HTTP request will go out our network with the user ip address as source ip. The HTTP Response will arrive with destination address the user ip address. We want use WCCP to redirect inbound and outbound traffic because we have c3750 with L2 WCCP support. The outbound redirection, when the packet is going out our network is simple. But, the problem is the inbound redirection. How we redirect this packets to proxies by WCCP?. Is it possible?. This redirection is done by c3750 using TCAMs/hardware?. Our throughput could grow until 2-3Gbps and we are worried about the performance.
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Aug 7, 2011
How many of the 881 switch interface ports can be used as router ports, have used the 877 etc where i can use 2 but need a low cost router that supports 3 for routing. (needs to be physical ports)
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Feb 2, 2012
One of techs accidentally connected two access ports from different switches together. Since then, LMS is alerting them as being Link ports down. I tried to default the config and set them to access ports without any success. what I should do in LMS to recognize them as access ports?
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Mar 13, 2011
We have existing stack of 3 units of WS-C3750-48TS-S ( 100 mbps ports with Gigabot uplinks). with IOS as follows, Can we add WS-C3750G-48PS-S in this same stack (this is 48 Gigabit ports)?
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Jun 13, 2013
We have several of these WS-C2960S-24PS-L running 12.2(55)SE5 C2960S-universalK9-M and need to upgrade to a better.IOS since we have a sitution where CPU would get to 100% but we have only a few ports connected.Also we have several of WS-C3750-48P running 12.2(55) SE6 C3750-IPBASEK9-M.
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Feb 4, 2013
According to cisco manual in order to change SDM template i need to reboot switch, but when i have C3750-X stack do i need to reboot stack or maybe will be enough reboot in sequence the stack members?
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