Switching

Hi,I have created 10 pools for 10 vlans(vlan 2 to vlan 11) in my dhcp server. Till yesterday everything was fine with my LAN but today i found that few systems that are configured for vlan 8 are unable to acquire ip address from that pool. When i tri...

Hi folks. I bought an 871 so that I could use CCP to configure it, not wanting to delve into the mysteries of IOS. However it appears I'll be forced to do so. I lost the login name (though I knew the password) to the 871, which was working well, so I...

Hi,I have a network with a 3750G and several Vlans defined. Its running ipservicesk9-mz.122-53.SE for an image.I have an existing application that is multicasting within a single Vlan to the address 224.0.0.1. From what I have read I believe that it ...

Dear Sir,My customer purchased Cat 3750 with IPS software feature set. However, the IP Services software doesn't come with SSH feature. To get that feature, software needs to upgrade to IPServices K9.From what I read on CCO, I dont think there is cos...

Hey Everyone,I've come across a peculiar issue on a WS-C2960S-48FPD-L where it is supplying PoE to it's neighbour a WS-C4507R. This seems to cause the etherchannel between the two devices to fluctuate during initial connection shortly after booting. ...

Hello... I had a "funny" but serious experience today at a client's office. I had  configured an 1811 wireless router, only to go and install. But there, I  could NOT ping the Ethernet interface of the VSAT Modem. The IP addresses were correctly co...

Dear Experts,I have a question about an authentication violation issue on Cat2960.HW/SW:- WS-C2960G-8TC-L- c2960-lanbasek9-mz.122-53.SE2.binIssue:According to the following document, by default authentication violation shutdown mode is enabled.Also, ...

Hi All,I am having trouble getting my newly installed 4900M(s) to access their default gateway. The 4900's are running IOS 12.2.53.SG2 and the default gateway, an ASA 5510 is running 8.3(1)1. I have connected a 2960 layer 2 switch to the ASA and it i...

For a performance problem, I did a SPAN on a C-6509 and captured traffic with WireShark,and I figured out my 6509 was flooding the trafic destined to server 10.1.100.1 (this is a big NetApp server)This trafic is overflooding my network (300Mb/s) This...

Hi, I am trying to get a better understanding of the Nexus 5K/2K with respect to how packet forwarding occurs and comparing it to the 6Ks. The Nexus 2K is a Fabric extender and it is documented that we need to treat the 2K as a line card. In addition...

Recently I've encountered an issue with our Cisco 3560 Catalyst switch.The LED of the interface Giga 0/25 was turning into orange after few seconds. After reboot the switch,It was working fine.To prevent this happen in future again, I want to know th...

Hello Guys,They told me to check a switch ws-2980G-A (I think it is very old model) because it was not working, executing some commands and watching that air sytem neither was not working I did realise that temperature was in 84Cº!!,.Aafter disconnec...

Hi AllI was wondering if anyone was able to help with the following: I have a pair of 6500 in VSS mode, the active 6500 crashed and the second unit has taken over as expected. Now I am unable to SSH to the active VSS member. The switches are running ...