Switching

Hello experts,  Tried to remove channel-group while interface was up and shutdown...but kept getting this message. sw1(config-if)# no channel-group failed to remove Ethernet3/4 from port-channel 33: (null) [membership update failed for port-channel33...

I have a stack of (3) 2960s 48's running 12.2(55(SE2 code and received the following message:%SYS-3-INTPRINT: Illegal printing attemp from interrupt level. -Process= "<interrupt level>", ipl=4, pid=87 (car-indi0087-sw02-3)- Traceback= D40514 D43184 1...

 Attached is the diagram of the existing setup (left side diagram) and new setup (Rite side diagram)Existing setup has connectivity of Server farm switch-1 with Core-1 & Core-2 (Core switch are in VSS) in port-channel smilarly server farm switch-2 ha...

This is such a easy question but i doesn't know how to answer it.I have a 2960 SW new just out of the box. No config were done.I want to connect several servers to the SW so that the servers can get DHCP ip address. Kinda like a hub...but the server ...

Hi everyone,I have to resolve a loop problem in a very bad configured LAN network.-As an introduction to the LAN:They have a Cisco 3750 switch as a core and then some Cisco SG-300 and Dlink DGS-1210 as distribution and access switches.They have diffe...

Hi all, I was wondering if someone could give me some help on setting up an E1 PRI link between a 2 call manager expresses? I have a CME on a 2621 and a 2821.I have phones registered to both of them and there is an E1 card in each router connected us...

Hi,I've a slight problem with my Cisco 871w router which is plugged in to Motorola modem. When I check my download speed on speedtest.net I'm getting 57 Mbps when connected directly to the modem. When I'm connected to 871w router the max speed that I...

Hi Everyone,Sorry to bother with this, but i'm getting crazy.I have a few switchs i want to monitor with Zabbix using SNMP. I'm able to get many informations (bandwith...) but i can't access CPU and memory stuff.For example, for one switch (Cisco IOS...

Hello,Im a "almost" CCNA and Im working almost 2 years now on a company that gives services to several clients....for which establishes many encrypted tunnels over private and public links. Over the time I have learn by trial and error how to set up ...

Guys we have two type of swicthes First of all i need to know what does 1000BT means ...will it have a normal RJ4 connector can i use both a port-channel to the core??? secondly the SFP on this can i use a RJ 45 SFP??? as my core swicth has only RJ 4...

Good morningA 6509 switch of one of our costumers presents the "ip helper address" configuration. Actually, the real DHCP service is located in a Windows Server.This feature works fine, but we are facing some issues related to the security policies r...

hi , i  have a toplogy as below :http://www13.0zz0.com/2014/08/17/12/125759738.pngim wondering which is the best choice to root bride ?is it Core-1 switch at the top ?? or distribution-2 switch in the middle of the network ?? note that core 1 is the ...

Hello,I'm trying to come up with a solution to add DHCP to a LAN config similar to the diagram below:  InfoBoth cores are connected via an etherchannel.VLANs 30,40,50,60,70.Both cores are in HSRP groups for each VLAN (for example "standby 30 has an I...