Switching

I have two new 6807 switches in my R&D lab that will soon replace my existing core switches. I have used the lab time to test how the new switches handle various existing configurations. Now that I am finished testing I would normally do a write eras...

Hi all, I have a 3750E switch in routing mode, with 3 vlans. I have 2 questions, I have created an ip access group "in", but for it to work have to specify the subnet in the ACL rule, I would have thought it would be the other subnet coming "in" If ...

Hi !There is some very strange Problem which is driving me crazyrecently i bought a dozen of access switches most of them are 2960when i updated the ios with 12.2(55) SE1 i encountered an error about licensing issues.It said :Error Message ILET-1-AUT...

WAN MPLS providers router does not inject default route via NSSA, the route is also absent in topology database what could be cause(s)

I'm trying to deploy a 1941 on a new circuit and am having a problem I've never seen before.   I have access to my router via the Lan interface.   When I access it, I can see,  The LEC's edge equipment in my Arp Table: Internet  65.153.195.LEC      ...

Hello,My question is kind of silly but I feel lost. I am reading the BCMSN self-study book and right now I am at the special-case 802.1Q trunk used between Cisco IP phones and catalysts. There's a statement "if you use the command switchport voice vl...

HW GRE support for the 4500-x was added in IOS-XE 3.07.The release notes are pretty sparse.  http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/release/note/ol-37xe-4500x.html#pgfId-2633388 Does anyone have first hand experience using thi...

This is the second 3750x that we've had this problem with.  One is running 15.0(1)SE2 and the other is running 12.2(55)SE3.  5 minute input rate 0 bits/sec, 0 packets/sec  5 minute output rate 712000 bits/sec, 184 packets/sec     0 packets input, 0 b...

Hello,We had an instance where a piece of equipment failed that was connected to our 6509 switch. When we replaced the unit with same make and model, the device could not ping outside the VLAN. We performed a sh arp and then a sh mac-address-table | ...

I am having a switch with constant output drops, however the bandwidth usage is low for the interface. This is just a trunk interface, what could be causing the switch to drop so many packets? Is there a limit of the number of packets per interface? ...

Hello, we have single Nexus 9508 switch with couple of blades. How do ensure that upgrade to software/firmware do not cause disruption? is there validated steps to perform upgrade online?

We have had several C3KX-PWR-714WAC V02 fail recently.  All their serial #s started with DTN.  Those starting with LIT seem to have no problems.  Does anyone know about a series of manufacturing defects or something with these power supplies.  While ...

I am designing a temporary connection at a site with dual router redundancy running HSRP. I have two 2911 connected via 2 switches for HSRP. I need to manage those switches from behind the router. What would best practice determine I should use to ma...