Other Network Architecture Subjects

The 3548 is a layer-2 switch. I'm wondering if I could block certain ports on this switch from getting an address from a DHCP server. This is for an unsecured building and currently we are using static not DHCP but I'm trying to find a better way. Th...

I have two Catalyst 4506 switches;version 12.1(23)E1.Current network setting is bellow; l3swSever< || >l2sw--l3sw(extreme) l3sweach Layer3 switches connected to gigabit channel link and vlan trunking vlan11,905.vlan 905 is Server segment co...

I have a 4500 router with an ethernet interface connected to a 3548 switch. I am seeing very high interface resets on the router interface (98 in 4 days). I am confused on why the router interface keeps resetting. The switch on the other end of th...

Right now I got one VLAN that has multiple IP Address's on it. When I create another VLAN and take one of the subnets off of the first VLAN and switch it over. When I create the vlan and add the IP it is showing down. There for when I switch the m...

I've been searching for answers to my NAT questions but I can't seem to locate the answers to my questions.I have inherited a network and I am in charge fo cleaning up configs and securing the network.I have what I believe is a cluster **** of a NAT ...

Hello,The people that house our 6509 want to relocate the unit. The power supplies are 2500W with a 20amp locking connector, but I'm not sure if it's a 110V or 220V. Is there any way to tell for sure?First obvious question: What's it connected to ...

2 3750's in a stack, with ether-channeled ports between the two (don't believe that makes a difference). I want to upgrade the ios (I know the second will pull the new software from the master). Is there a way to reload the switches individually so...

Later that I committed the error to execute the command in the way rommon confreg 0x0 I do not obtain more to initiate my router normally. Now it is going off characters "ÇÇÇÇÇ". How I can decide this?Attention: My CCO alone to give right to me to ...

I have been asked to enable Layer 3 on a 2gig port-channel between 6509's that are loaded with identical Virtual Lans on both switches. One 6509 hosts these Virtual Lans as the active router in HSRP and as the root bridge. The other is the secondary ...

Hi all,Does anybody have a working config for bridging a subnet between GRE hosts.?I need to extend a subnet across any IP background for some temp testing so i am using a couple of 3620's.I know the bridge-group option on the tunnel interface works ...

Hi FolksWe support several 2950 switches ONE of which disconects users and will not allow telnet connections.The buffered log provides this ERROR:ERROR in strata_protected_notify:line926: can't get remote inst pointerIf anyone can shine any light on ...

We have added 7 Catalyst 2940 (IOS 12.1(22)EA3 or 12.1(22)EA4) on a backbone LAN composed from several Cat3750/Cat2950 switches. We only using VLAN1 and there are no trunks configured.The problem:after a few hours, we losing IP connectivity (ping or ...

What IOS version will work with a catalyst 3750 and allow for vrrp.I have installed version 12.2(25)SE and do not have the vrrp command available.Thanks!