Switching

Hi All, Basiclly I have a Comcast modem connected to a Apple Airport Extream router. This is my personal network. I would like to create a lab network by connecting a Catalyst 3750 to the Apple router and create 2 Vlans. A server vlan and the persona...

I'm using IOU on GNS3. I have a router plugged to a switch, this switch has 3 vlan (10,20,30)VLAN 30 is the native vlan.Everything is ok about the performance of L2 layer but when I try to add the IP address to the trunk port of the swtch that goes t...

Hi, I Would like to ask how to troubleshoot this scenario.R1 and R2 act as a Default GatewayI have 2 site A & B R1 of Site A is connected to R2 of Site B via Leased line the problem is: 1. From R1 Site A I can't ping the R2 and Firewall2. From Site A...

Hi all, I'm want to design a network infrastructure with a fiber ring to have a "self healing" environment. I want to maintain the network up, in a case one fiber break.  I’m considering using SMB switches (SG500-). Attached is the concept design for...

Hi, In following two commands, first command can work, but second one cannot work to enable password. I think the second one needs another command to work with it. Any one can give me an example ?Thank you --------------------------R6(config)#enable ...

Hi.I want to know.. How many NTP recurring sessions does the cisco router 1841 supports. The scenario is that this router is a ntp server and does nothing else but that.Thank you 

I have a 3560E that was running fine until we lost the domain controller as well as ISE license expired.  I rebuilt the AD on new hardware and on 2008r2. The server is in vlan 90.. It will hand out addresses in that subnet but any other subnet fails,...

I'm preparing for a new Nexus 7700, 9300 & 2K project. The overall design is to have a single Nexus 7K core in either data center separated by a L2 link. A pair of 9K's on either data center handling all 10Gb aggregation & 2K connectivity. Going to d...

Hello,I am needing a little help configuring a CISCO 3560 PoE Switch to our network. We have 4 vlans configured on the CISCO 4908G-L3  and CISCO 3500xl using EtherChannel, Bridging and Routing and ISL Trunks Between Switches. We recently have purchas...

Hello,I am deploying a 3850 that will have a Siemens phone switch connected to it.  This switch is replacing the current 3560 switch that has qos set up on the ports that connect the phone switch.  Can anyone point me in the right direction for the c...

I currently have 4 - B22's in a HP7k. They are then connected back to 2 - 5ks, see below. The HP7k has a couple blades connected and configured to the B22 as access ports and trunks, but now 3 new blades were added. Is there a best practice configuri...

Anyone have any idea why ping would fail but a arp entry (port, MAC and IP) in the switch would be made? The device has no firewall and has been verified to function correctly when not plugged into the switch.The switch also showed the correct link s...