Other Network Architecture Subjects

I have a 2924_XL s3witch that continuosly gets the following message:Nov 28 08:16:55 EST: %RTD-1-ADDR_FLAP: FastEthernet0/1 relearning 11 addrs per min. debug info shows macs on different ports every minute. Can anyone explain this to me. everythin...

Cisco has a tool that can automatically converting hybrid config. to IOS config. I used it before; however, I can no longer find it. Does anyone know where it is? Thanks, David

what different between native vlan and other vlan?

My port channel is not coming up can you review my port channel configuration.SWITCH#!interface Port-channel12 switchport access vlan 513 switchport mode access!end

I want to upgrade my 4506 from a Sup II+ to a V engine. I'm running IOS 12.2(25)EWA4 but the Sup V requires 12.2(25)SG. The Sup V engine states that it is hot swappable. 1. Do I need to upgrade the IOS before installing the Sup V or does a new Sup V ...

I have just attempted to use a splitter to power a non 802.3af compliant Wireless Access Point from a POE port on a CE500 switch - the splitter indicates no power and the AP does not power up. It appears that the splitter only accepts power on ethern...

I have a Catalyst 2950. Client computers on this switch have been working fine for quite some time now but recently I have had 2 computers go into an error disable state. I can assume it is because the port detected a "link-flap" on the port since th...

Hello to all,After reading several RFCs, guides and HOWTOs I am confused by an apparently trivial question - what is the basic, fundamental difference between classful and classless routing?I am well aware that - said in a very primitive way - the cl...

We have just upgraded two Cat6509 switches to the enhanced chassis and from Sup2 to Sup720-3B.We are using hybrid mode. CatOS version is 8-5-1 and IOS is 12.2(18)SXF.The switch has multiple Vlans, most of which have corresponding layer 3 interfaces o...

On a 3550 (IOS 12.1(13)EA1a)switch. I have vlan 1,102,103 and 104. Layer 3 is enabled. I have created a mac access list LOCALMACHINES with about 20 mac addresses.I created a vlan access map LOCALACCESS with the following entries :match mac address LO...

Please,may someone explain what are the "System FCS error frames" I see with "show controllers ethernet-controller" on some ports of a Catalyst (on trunk and also on access ports) WS-C3750G-24TS-S (3 switches in stackwyse)?Error counters advance slow...

I have a few 2948Gs and a 3560 multilayer switch. I have the VLANs on a 2948, which points to the 3560 as its default gateway. I have connection throughout, I'm able to ping the DHCP server from the any switch, however the ip helper-address command...