Protocols / Routing :: Notebook Is Missing Channel 12
Jan 24, 2012
I am told by a friend that my notebook is missing channel 12 and I am unable to use my wifi at work is there anyway round this problem,can I just download this somewhere.
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May 24, 2011
I am trying to get my daughters laptop re-hooked to the wifi. Other computers and smart phones have no problems. This computer was connected but after the applesauce spill on the keyboard, and subsequent MicroCenter replacement of keyboard, we cannot get the laptop online.It is an Acer Aspire 5517 running Windows 7I have removed all profiles and created a new profile entering parameters from my laptop. I can see the wireless connection, but when I try to connect, I get "Windows was unable to connect to Greg". When I click troubleshoot, I get "Troubleshooting couldn't identify the problem".
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Jan 15, 2012
What I am attempting to achieve is to aggregate trunk ports out of a VMware server into a single logical connection to give as much bandwidth as possible, the switches are 3750X and are three stacked together with the server connections spread across the stack. What I am not sure about is if two port channel load balance protocols can happy co-exist on the switch, by default the switch is using MAC address load balancing and Vmware wants to use IP Source load balancing. As other trunks and channels exist on the switch I don't want to make a change that will affect the other live connections if changing this is a global setting and not local on the channel.
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Jun 14, 2011
I have two Aironet 1231Gs, that are both running the same version of fimware: Version 12.3(8)JEE
From the gui, I try and change the channel on the main radio interface--It works from one, and I get just a blank page on the other. When I try and change it via the cli, I use the "channel" command in conf int mode, and it works one the one, but the other one, the "channel" command doesnt exist.
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Aug 20, 2011
why the WAN protocols like Frame-relay, HDLC and PPP are called Layer2 protocols?What is the address scheme they use?
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Apr 5, 2011
I have got a PC at work (Windows XP Pro SP3) that is on two networks with the IPs 10.20.30.167, subnet 255.255.255.0 (internet enabled) and 10.0.0.20, subnet 255.255.255.0 (no internet). On the 10.0.0.X network there is a gateway with the IP 10.0.0.200 allowing access to another network; 192.168.60.X, subnet 255.255.255.0 (no internet). I have added the route on my work PC to access the 192.168.60.X network via this gateway and I can access all PCs on all three networks from this PC.Now, I am using LogMeIn Hamachi so that I can access the networks at work from home. The PC at work is the 'gateway' PC on the Hamachi network. When installing Hamachi it created a new network connection and bridged this connection with my 10.20.30.167 network adapter to allow access to the 10.20.30.X network from an external PC when connected using the Hamachi VPN connection. I have manually configured my Hamachi connection on my PC at home to the IP 10.20.30.169, subnet 255.255.255.0, with the default gateway set to 10.20.30.167. I can ping all computers on the 10.20.30.X network from my PC at home.
I then added a route on my PC at home for 10.0.0.X to go via 10.20.30.167 (the 'gateway' on the Hamachi network). I also enabled IP forwarding on the 'gateway' PC (my PC at work). I can not ping any PC on the 10.0.0.X network from my PC at home apart from 10.0.0.20 (the other NIC in the Hamachi gateway PC) and 10.0.0.30 (another PC on the 10.20.30.X network that is also on the 10.0.0.X network).Now, with IP forwarding enabled on the Hamachi gateway PC I would assume after adding the route on my PC at home for 10.0.0.X traffic to go via 10.20.30.167 that I would be able to ping all PCs on the 10.0.0.X network...I also tried adding a route on my home PC to send all traffic for the 192.168.60.X network via 10.20.30.167 which has a route via 10.0.0.200 to the 192.168.60.X network, but this also did not work.I then tried adding the 10.0.0.20 network adapter into the network bridge that the Hamachi connection made, also keeping both IPs (10.20.30.167 and 10.0.0.20) on this network bridge by adding them into the 'IP Settings' in the 'Advanced TCI/IP Settings'. I also added the 10.0.0.200 gateway for good measure. I still cannot ping any PC on the 10.0.0.X or 192.168.60.X networks from my PC at home.
I have also added the route to the 10.20.30.X network on a PC on the 10.0.0.X network to go via 10.0.0.20 and tried pinging a PC on the 10.20.30.X network but this also has not worked. Also setting the default gateway on a PC on the 10.0.0.X network to 10.0.0.20 does not allow this...Surely bridging the networks 10.20.30.167 and 10.0.0.20 on my work PC would allow another PC on the 10.0.0.X network to access the 10.20.30.X network after adding the route or setting 10.0.0.20 as the default gateway?
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Oct 30, 2012
I want to do the inter vlan routing packet tracer file url...configuration of MLS are as bellow can anyone tell me why vlan on switch0 can not ping vlan on switch1. [code]
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Sep 12, 2012
Have 2 N2K with dual-connections to both 2 N5K, will all 4-ports of N5K will be the same port-channel. N2K as well ?
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Nov 29, 2011
I need to configure a port channel between two sw 4507R. with port Giga, but those port are in different modules.
Sw-1
interface GigabitEthernet5/48
description **** Conexion Switch-2*****
[Code].....
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Oct 20, 2012
When you aggregate multiple fiber GBICs together on the 3508G, do you configure it as an etherchannel, or as fibre-channel? I've looked around online for hours, but can't find it mentioned anywhere.
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Sep 23, 2012
I was configured ether channel between two cisco 2960s series switches. It is working properly. I was replaced two cables in etherchannel. Now one link working remaining link is down(both cables are working cables only). Below are ether channel details.
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Dec 7, 2011
I have 3750 core/distribution switches with routing enabled in two offices connected with copper link and L3 port channel interfaces. NewOffice#2 has moved about 5 miles farther away from office#1 and I have to deploy new core/distribution switch connect it to old core#2 via F.O and move all access switches with it. Old core will stay in old #2 offices as a bridge between office#1 and new office#2 Office#1core<->copper (Ethernet) <->oldoffice#2core<->f.o. <->new office#2core How I should configure port channels ports on oldoffice#2 core to act as bridge between office#1 core/dist and newoffice#2 core/dist without changing anything else (ip, etc) on whole network
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May 5, 2013
"How to display the EOBC error counters in the Catalyst 6500 series switches and a definition of the EOBC interface" document here on support forum stays that The Ethernet Out of Band Channel (EOBC) is a half duplex channel that services many functions, which include the Simple Network Management Protocol (SNMP) and the packets that are destined for the switch.
Previously i were thinking that EoBC used only for SCP and SLP protocol. In addition i found other article (but not on cisco site, heh) where stays that The Results bus is a control plane, while the C (EoBC) bus is more of an "admin plane", thus you will never see data packets (such as CDP, SNMP, etc.) going over the R or C bus.
So there is a big contradiction between those two statements. How to prove one of those and if first one right, what meaned under the packets that are destined for the switch in it? SCP and SLP or other traffic as well?
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Apr 22, 2012
I have 2 Cisco 6509 switches linked together via single Fibre as a trunk.I want to change this to a port channel where I will add another 3 fibre ports to the port channel but what order do I do this to minimise any disruption.
1-Configure PortChannel and add the 3 new ports, this will bring up the Port Channel but what effect will this have on traffic currently going over the single Trunk link? Will spanning tree go mad, how will switches react?
2-Convert existing Trunk link to Portchannel then add in new ports to PortChannel, I guess in doing this there will be a small hit on traffic as it changes to a port channel.
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Feb 24, 2012
We have 2 6513's that are linked via 2 10 gig interfaces, using an LACP channel.I received an alert this aft stating that the far 6513 was unreachable and the port channel int PO3 had gone down, the 2 10 gig interfaces had also gone down on either side. 5 mins later PO3 had resestablished itself and has been fine since. [code]
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Jan 10, 2012
running ether-channel mode on. I have a 3120G Blade Switch (stacked). The blade switch connects to the blade servers (internal). Gi1 /0/1 connects to eth0 and gi2/0/1 connects to eth1 on the blade server. [code]
The issue is when is shutdown eth0 on the server, the corresponding interface on the switch (gi1/0/1) does not go down, show up and running.
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May 21, 2012
I have a catalyst 6506E (WS-C6506-E) with a SUP2T supervisor (VS-S2T-10G) card and a 10G interface card (WS-X6816-10G-2T) + DFC4.I have configured an etherchannel to another switch with the 2 10Giga ports of the SUP2T card and 2 10giga ports of the interface card.I only use the 10Giga ports of the SUP2T card so the cards have the same QOS transmit capabilities.But they do not have the same receive capabilities.
So when I configure QOS (with the new commands on SUP2T) on my 4 ports within the Etherchannel, 2 ports move down because of the inconsistency.
Till this point, no surprise.
The problem is that the command "no platform qos channel consistency" replacing the "no mls qos channel-consistency" does not exist.I run the last IOS 12.2(50)SY1 IPSERVICESK9.
And I cannot have QOS on my Etherchannel on the 2 cards.Or I have to use 4 ports of my interface card but in case of failure of this card, I loose the whole etherchannel.I there a way to avoid the consistency check ?
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Feb 7, 2013
We are running nexus 5018 in our DC.What is the difference betwen "channel-group 214 mode active" and " channel-group 216" Any difference?.. because i have problem with this config we are going build a server config?
We have problem with porth channel down.
5K# sh int po71
port-channel71 is down (No operational members)
vPC Status: Down, vPC number: 71 [packets forwarded via vPC peer-link]
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Jan 22, 2012
I set up a port-channel trunk between a acess switch 3750 ( int gi2/0/1 and gi2/0/2) and Core 6509( int gi7/11 and gi7/12).
On the both the 3750& 6509 I configured:
interface Port-channel15
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 100,103
switchport mode trunk
But the ports on the core g7/11 and g7/12 keep shutdown and when I do show interfaces port-channel 15, it show the interface is shutdown.
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Oct 11, 2012
I am currently doing an audit at a customer site, i.e. am checking if any IOS upgrades are needed. I have found that alot of IOS versions that the customer is running are not available in the Cisco Software Download area anymore. Taking IOS 12.2(44)SE2 for the 3560 for example: some earlier and later versions are available as downloads, but this exact version is not. It also is not listed as a deferred version.What is Cisco telling us with this exactly? Are these "missing" versions not supported anymore i.e. is an upgrade to a supported version adviseable?
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Dec 12, 2012
I have a 867VAE-K9. On feature navigator it is listed as supporting OSPF. However when I go into config mode and type "router ?" BGP is there, but OSPF is not. Also, under my tunnel interfaces there is no support for any OSPF commands such as "ip ospf cost" etc. I'm in the process of raising a TAC. I have tried five or six different versions of IOS code that is available for this device, in each, we never see OSPF listed but sometimes see "router odr" or "router lisp"...
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Nov 13, 2011
I've got two routers, Cisco 2911's with 15.1(4)M1 on one and 15.0(1)M5 on another.
I'm trying to set up ip sla for vrrp tracking but the commands seem gimped? I don't even have an option for ip sla <operation number>. All I've got is ip sla responder/server/key-chain.
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Apr 1, 2012
We have a working PBR route map on a 6509 switch and a 3750 switch, each in different locations.On both devices, the route-map is configured to match on one of multiple ACLs, then set the next hop to a directly-connected IP address, like so: [code]
When copying in the ACL contents for "ACL20", they were accidentally copied in to the ACL1 list, and ACL20 was never created. Shortly after this was done, the next hop router went unreachable in both locations. Pings failed and the 6509 and 3750 each lost the EIGRP adjacency to the 1.1.1.5 router. After troubleshooting, I removed "match ip address ACL20" and connectivity returned.
My question is...if a PBR route-map tries to match on a non-existent ACL, what happens? Does it mark the next hop unreachable (even though it's directly connected) or does it match for ALL traffic and send *everything* there (thus, making it appear unreachable, as if a broadcast storm was happening)?
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Jun 3, 2012
I just loaded the web interface IOS on a C3750X. The first thing I noticed was there was basically no web interface. I can look at things, and do default configurations on ports, but it doesn't appear I can configure VLANs or QoS or anything like that.
Am I missing something, or is this just how the web interface functions?
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Sep 2, 2012
I have two computers. Computer A is connected to the internet through GSM network. Computer A also have NIC adapter which is connected to local network with IP 192.168.33.10/24.
Computer B in connected to internet with DSL connection.
On both machines I use TeamViewer to make VPN secure tunnel between this two computers. Computer A gets IP:7.200.100.2 Computer B gets IP:7.200.100.3
How can I access from computer B to specific device with IP 192.168.33.250 which is on local network of computer A?
Is it possible to route traffic from VPN to other local network, or it is some possibility to use port forwarding from VPN connection to specific IP address on the local network to specific port number?
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Apr 5, 2013
We have a PPPoE DSL link with a dedicated IP providing by a small ISP(ISP A) in Canada. We are having trouble reaching a small group of IPs in the US to be able to access some client resources.We have eliminated all possible local issues by removing the firewall and making a direct connection to the ISP. We have also had numerous tests prove successful when we use other local ISPs.
Trace routes show that the packets get dropped a few hops from the destination on a US ISP(ISP B).The routes even appear to be very similar to the other ISPs we tested. We escalated to ISP A and they say that everything is working properly on their end and the problem is with ISP B. They claim they "have no partnership with ISP B and therefore cannot create a ticket to get it resolved". I tried calling ISP B but I get nowhere because I am not a customer of theirs.
My solution is to give ISP A the boot, but management has denied that request because of the amount of effort required to switch over. How I can escalate this? Is there anyway to go over and above the ISPs?
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Feb 27, 2013
I am building a new network and intended on using the min-link feature on my port-channels between a 3750-X series switch and Nexus 4k.
However reading further into this it seems this feature is only supported on higher end models. I cannot find any reference to the min-links feature in the 3750-X configuration guide. Is this an available feature?
The 3750-X model is WS-C3750X-24T-L running IOS 12.2(55)SE3 IP Services
My thoughts is that the is only an LACP supported feature so I may not see the command until I have entered an LACP specific command on the port-channel but unfortunately I do not have a 3750X to verify this on at present.
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Jan 17, 2012
We have one 3825 router used as voice gateway. For redudancy, we want to connect it to two different switches which has STP and HSRP running. Can I create a port-channel with two Giga interfaces in 3825 and connect to two different switches? Should I configure port channel in switch with only one port in each port-channel? I know server can be connected to different switches with NIC teaming. I just want to mimic that kind of setup. I did one time for port-channel in 3825, but it was connected to a stacked 3750X. So it's different case now.
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Jun 21, 2011
I have two 3750Xs for stack, and i want connect a 2960 switch on this stack with port-channel.I connect 2960 G0/1 to 3750X G1/0/24, and 2960 G0/2 to 3750X G2/0/24. [code] i try to config spanning-tree etherchannel guard misconfig, but no use finally, i have to use "no errdisable detect cause all"..i check the cisco.com, and find a information: for this case, channel-group can use mode desirble.but when i try to change the channel-group in 3750X stack, it shows me that: "with pagp enable, desirble mode must config in the same switch".i try to use mode desirble mode in G1/0/23 and G1/0/24 in 3750X stack, it still can not work.i want to know how to solve this problem? not only do "no errdisable detect cause all".
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May 8, 2013
I am trying to configure port-channel from one switch to two switchs, and only one interface of each switches make part of the port channel.Cisco IOS Software, ME380x Software (ME380x-UNIVERSALK9-M), Version 12.2(52)EY4, RELEASE SOFTWARE (fc1) [code]
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Jan 22, 2012
I have a pair of 6500's setup with VSS and there is currently only one link between then. However one end of the link is on Po10 and the other end is on Po25. If I move the Po25 over to Po10, will things break? It seems to be working fine now. I'm about to add a second link and I'm concerned about the current configuration. It makes more sense to me to have both ends of the same link on the same port-channel ID. I've seen documentation which states otherwise however.
interface Port-channel10
no switchport
no ip address
[Code]....
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Mar 3, 2012
I am using 3560.IP rouitng is being turned off on this.Curious to know if I will create etherchannel or port channel.I think etherchannel.Correct me if I am wrong.On connecting switches I have vlan10,20,30 to be allowed.I am sure I need to allow these all vlan in 10,20,30 which are on the trunk port on each side switch.Post that will add channel-port lacp and make it in active mode.Is that correct.This way traffic will be load-balanced/aggregated on minimum 2 ports who are the part of this.
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Jan 27, 2013
Here's what I'm trying to do. We are having new storage servers installed that will be using NFS. I'm being told that they need to have their connections port channeled. Right now, the servers have connections to 2 different 3750s for HA. Is it possible to configure a port channel between these 2 connections?
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