Other Network Architecture Subjects

Is the main job of a core switch to be the "center" for other switches to plug in? And when should you decide that buying a core switch for say x amount of nodes or switches is suitable? If you have only 100 nodes and say using 2 Cisco Switch Stacks ...

%PLATFORM_RPC-3-MSG_THROTTLED:do you know this error message ?what does it means ? it's hardware or software problem ?IOS version is 12.1(14r)EA1a .in the CCO there is some informations but nothing about the cause!So, this error is always followed by...

I have a network:LAN1---C3640---2M WAN-----C7507---LAN2,and LAN1---C3745---Ethernet 10M WAN -----C7507(2)----LAN2,how to configure to let traffic to go 2M and 10M line to load balance? Please help me.I developed OSPF but I can't get balanced.

Hello guys and girls,need some help figuring out how to connect 3x2502 routers to existing ethernet 10/100 lan??Just got those routers and am willing to learn for ccna/ccnp.Got working lan with mix of linux and ms win pc's.Now, need to connect those ...

I have 3-4 3500XL switches stacked together with Gigastack. the problem that occurs here is if one switch reloads, Gigastack of all the switches in the stack starts negotiating again.Is there a way to stop this?orIs this avoided fully in 3750 stack t...

Is it possible to configure a router to active as a passive DHCP server? In other words, enable it and setup a scope, but it only becomes active if the primary dhcp server, specified with the ip-helper address, becomes unreachable. Can this be done w...

I have a 3750G-24TS that I need to attach a RJ-45 10/100 port firewall. Is there a recommended Media Converts to use. Thanks, Ken.

Hi!I've set up PVLANs on Cat6k and it works pretty well. For example, 6500 Community ports can successfully communicate to each other and Isolated ports are isolated from each other. Also, I have many non-PVLAN (access) ports on the 6500. Now I need ...

Hello,We have a 2621 router that keeps acting up ever few days, normally in the morning when staff come in. Staff cannot access the Internet at all or any internal servers by either IP or NAME. However, all incoming traffic seems fine. Restarting the...

I've searched but can't find anything helpful...We're rolling out some new network equipment at a number of locations. We've been having some ARP problems. The main router is a 1711, segmenting PC's and an NT print server. When the router is powered ...

Hi All,I'll be opening a TAC case for this issue, however I thought I would run it past the forum to see if anyone has come across this issue.We have a newly installed Cat 6513 switch in the following configuration:Slot 1: WS-X6K-SUP2-2GE (with 512Mb...

Hi,i have a number of 3560 switches, powered and non powered, which i want to stack with the cab-sfp-50cm cables. IOS is 12.2.20SE4.However, i get this error:-%PM-4-ERR_DISABLE: gbic-invalid error detected on Gi0/2, putting Gi0/2 in err-disable state...