Other Network Architecture Subjects

I'm having trouble with a link that was working with a 3600 as an end device, but won't work when replaced with a stack of 3750 switches. A couple of co-workers in our group has looked at it, but can't find anything obvious.The path is from a 6500 o...

I have brushed upon vlsm, Where say you can have multiple /30's out of a /27, can anyone give me an easy example of this ?thanks

ok, i created 3 vlans in my 2950,three port for each vlan switch, but each vlan needs an exit to the internet, if my adsl modem in connected to vlan1 the default, and the others vlans can't see one each other , how tehy reach vlan1 to the internet . ...

I am in the midst of coming up with a plan for an entirely new infrastructure for our new office. WE have decided to run with 6509's in each of the closets as access switches and 4x6509's in the data center.In the past I have used HSRP and Rapid spa...

Hello,I try to set a trunk with vlans > 1005 but the command is rejected :(switchport trunk allowed vlan 2-99,101-1005and I would like to setswitchport trunk allowed vlan 2-99,101-4094on a c2950 it's ok but not on a c1801 :(

I have a 5505 that refuses to change VTP mode to anything other than transparent. It acts as though it has taken the change, but when you show vtp domain, it shows it as back in transparent mode. The VTP server is a 2924, and there is another 5505 in...

Hello All, Is there a way to locate through which port of a switch a particular ip address is coming from? I have a situation where a pc appears to be generating substanial broadcasts and I know which switch the pc must be connected to but am not sur...

Hi Guys, I currently noticed lots of errors & CRC on specific port on 2950 Switch, configured as trunk thats allows specific vlans.alsoI can see it on the port led status. How could I solve this issue? Appreciate ur assistance, Mohamed

I have two Core Switches and all the access switches are connected to both the core switces. Per VLAN spanning tree is configured where in certain VLAN goes through Core switch 1 and Certain VLAN go through Core Switch 2. When i reboot core switch 1,...

Are there any resource talking about the internal relationship of the processes in a router? For example, the order that NAT process ,routing process and the access-list take effects? Any advice is appreciated. Many thanks!

I have some 1841 routers in a network, each has a 2 port E1 WAN module and a 4 port Ethernet Switch module. If I create VLANs on the switch module - what do I do for a trunk port. I want my VLAns to go out on the WAN port to another router. Can the ...

HiI'd like to add a vlan onto my switch. The worry I have is that I might lose the vlan information or mess up while adding the vlan. What steps would I take to ensure I have backuped up all the switches and their vlan information, and how would I re...

can anyone define this ? I am unsure what it means with respect the eigrp !!summarization would only occur when routes cross a network boundary

As soon as we enable "net flow-export destination 10.1.1.1 2055" on a C6509/Sup720 the traffic seems to be sent out on all of our trunk interfaces. 10.1.1.0/24 is our management network which is trunked out on all trunk interfaces. The Netflow server...