Switching

Hi,allToday,i upgraded IOS version for my 3750 switches.MY supplier gived me two tar files,one of which is for 3750-24ts and other is for 3750-12s. However,i found the two tar image files are all in same namning and size.To me,there seems no differen...

I need to have two redundant routers that should provide static NAT services. I run 12.2 (no flash memory to store 12.3) that can't bind static nat addresses to active hsrp (as recommended at http://www.cisco.com/univercd/cc/td/doc/product/software/i...

Hi All,Can someone explain this one to me.Two routers in the same area configured for authentication the following way:On both devices:router ospf 100 area 50 authentication!Interface g0/1 ip ospf message-digest-key 1 md5 key xxThis works because the...

The first port of the switch does not get connectivity when SFP module inserted. The SFP moduels use for Cisco GE SFP,LC connector LX/LH transceiver. The other ports are functioning well with the same SFP.Would appreciate your suggestion.ThanksKazi I...

Hi all,I am configuring a cisco switch 500 series and all access ports will be set as cisco-desktop smart port.This switch will be connected to a 3com switch via uplink, vlan1. Which smart port should I use? Can I also use cisco-desktop?

OK, I forgot to add a stupid vlan to some trunk ports that were bundled in an ether channel. So, what did I do? I added it to the allowed vlans for each port -- ONE AT A TIME!. Wrong!!As I would add the vlan, the port would fall out of the etherchann...

Hi,I have cat 4000 with IOS 12.2(25)EWA7 software, I'm facing a strange issue when I reload the switch ,the ports lose the VLAN configuration and goes back to the default Vlan.other configuration remains OK.the configuration register is 0xA101 , is ...

hello,i apologize for what may seem to many a very stupid question. i am looking to purchase cisco routers (probably from ebay), and the majority of the ones they sell are from the 2500 series. at school we had 1800 series routers, and it appears to ...

Greetings all,I am working on a strange problem here : there is a switch (Catalyst 2950-24, IOS 12.1(9)EA1) that "forgets" the MAC address table entry of another switch (same type and IOS), despite the direct connection between the two (EtherChannel ...

C2950 Boot Loader (C2950-HBOOT-M) Version 12.1(11r)EA1, RELEASE SOFTWARE (fc1)Compiled Mon 22-Jul-02 17:18 by antoninoWS-C2950-24 starting...Base ethernet MAC Address: 00:17:0e:ea:f2:00Xmodem file system is available.Initializing Flash...flashfs[0]: ...

Can anyone help me write an acl to allow tftp access between these subnets:10.1.21.010.1.33.010.1.31.010.1.45.010.1.34.010.1.41.010.1.42.010.1.44.0and this box - 10.1.255.250Thanks so much!!Becky

I have 2 questions:1)I had a scenario with 2 switches in my ICND exam. it is said that SW2 was added to the vtp domain, but the switches cannot communicate(or cannot do something vital that i dont remember right now)and then i had the output of >show...