Switching

I have (2) HP 8206's that I am using as my core switches, (2) 4451 Cisco ISR's that I am using as my Core Routers. They are connected with Port Channels and LACP Distributed Trunking for full redundancy. This configuration has been working fine for t...

What is the Cisco recommended way of using Autoconf for Cisco ATAs (187,188,190)? 1) It seems that there are no unique OUIs for older ATA models. (Cisco ATA OUIs seem to be shared with Cisco Phones) It seems that "OUI 34DBFD is only used for ATA 190"...

I have a yealink t46g phone (or some similar model) connected to a 3560X48PS.  That is then connected via a port-channel to a 385024te.  I can take a capture at the back of the phone.  This gives me what the phone believes it is receiving and sending...

I have 2 core routers, 2 data centers and each has an ISP. R1 is a VSS pair of 6807s in our main data center and is advertising a static default route for our primary Internet connection.  This route is advertised via EIGRP to the rest of the network...

Hi, I am looking for some design help. We currently have dual routers ISP1 and ISP2 and plan to connect them to a single layer 3 core switch. I am trying to decide what way to go with the design. Do I use an IGP from the core to the CE routers and re...

Hi all, I have a simple IP SLA setup using icmpecho to control / track when a route should be up or down. It has been working fine until 1 day whereby i need to see the statistics history (due to troubleshooting purposes) and is trying to set them up...

Hi I am trying to set up a STP with 2 3560 switches and I have 2 uplinks, I have made the trunk on both links, I am trying to figure out how I can make 1 link amber for both ports on each switch, I am not sure how to do that, The end goal is so...

Hello, I am triying two router between IPSec VPN (Cisco 2821 and IOS: c2800nm-advsecurityk9-mz.124-15.T17.bin, Version 12.4(15)T17) with Windows Server 2012 CA  and SCEP services. I issued certificates by CA and routers received thats on nvram;  ...

I can not output errors in the output of command "Show int e139/1/27" but I can see output errors in the output of command "Show int e139/1/27  counters detailed"  Why it is ? What it mean ? someone please could help.  SCH127# sh int Ethernet139/1/...

Hey there, im using a cisco Catalyst 2960X switch 24 ports, and i need to block facebook, youtube, twitter, instagram and other urls using that switch. I tried to configure a class-map but when i type "match protocol http url "*youtube.com", it gives...

Good morning; there has been a problem with some etherchannel defined in a Catalyst 3850 Switch STACK.At one point, defined interfaces belonging to EtherChannels and who have been working a long time without problems, change their status from "P" to ...