Switching

Hello everyone,I was wondering if someone can help me out. I have recently purchased 12 Cisco 3850 switches but I am having an issue stacking them. I can only get 4 to stack but according to Cisco you can stack up to 9 I believe. I am running IOS 3.3...

Hi,I had my Cisco 877 unplugged for six weeks during my vacation and now it refuses to bring up my ATM interface. It comes briefly up on boot goes momentarily into status up/up just to go into up/down in a matter of seconds. This is a configuration t...

A little background: I've taken the first two of a four part Cisco CCNA course through my local community college and have a pretty decent grasp on VLANs and how to set them up with Cisco equipment.The problem I'm looking for a solution to here is 3r...

Hi there, Can anyone assist me on this one? We've had constant issues with this switch since we put it in, with it trying to be clever and disabling ports on us part of the port security 'feature'. I have a port that is telling me there is no device ...

hi all,we got a 3650 switch that goes up/down from time to time.the config it's just normal trunking.i suspect it could be an issue with the fiber SFP.could someone advise what's the nominal value for optical receive power?anything else to look at? #...

HiAre BPDU sent on all port of switch with any status or sent only some status?On one switch with stp enable,we have 3 status for port,DP,BLK,Root. On Which status are BPDU sent ?Thanks in advance

Asking this out to the general Cisco community: I have a DHCP superscope setup on a Win2K3 server which is in the 209.180.X.X range. I moved it to a new DHCP server which is in the 192.168.X.X range. None of my clients could obtain an IP address. I c...

Does the 4500-X with IOS XE version 3.4.3 not yet support IPv6 VRF-Lite configuration ?When creating a multi protocol VRF definition it wil not accept address-familily ipv6:% IPv6 address family is not supportedThough the management vrf has it with b...

 I have a new AP air-lap1041n-a-k9 it is possible to configure the browser? I do not understand much about cisco routers, someone help me?

Im upgrading an ios and ran into some issue. I don't know what this mean. I tried to search it but cant find the answer. Can someone enlightened me.cor01-6506#reloadReload to the ROM monitor disallowed from a telnet line.Set the SP configuration regi...

Hello all I have one 2921, with HWIC-D-9ESW, and I am seeing this error on logs: esw_dtc_ltc4258_reg_write : s2w timed out on unit 0 reg 0x18 data 0x22S2W Error IIR 0x0006 ISR 0x8000esw_dtc_ltc4258_reg_write : s2w timed out on unit 0 reg 0x18 data 0x...

For reasons too complicated to describe (trust me, don't ask) I have two cisco 1921 routers with EHWICs wit  2 T1s back to back across two aggregateed fractional T1s.  This CANNOT BE CHANGED. I have 3 vlan segments (4 if you count a native vlan, id 1...