Switching

Hi,I have a new Cisco 871 router which I modeled after my original Cisco 831's. I have the http application security turned on the 871 router and what is happening is that most of yahoo sites are not coming up. When going to http://www.yahoo.com or m...

Hi. I'm trying to setup trunking from an ASA 5505 to a Catalyst Express CE-500. Unfortunately, I'm confused as to what "smartport" role to use. I've tried both "switch" and "router" because I need something that turns on trunking. The problem is,...

i have router 7606 ,with 2 supervisor engines ( 720 ) ,i configured sso redundancy as follows:redundancy mode sso main-cpu auto-sync running-configso how can i verify that the working mode is NSF or SRM?

Can someone explain this:Cisco catalyst 2960 shows interface as 100-full, but the Redhat Linux ESversion 3.0 box connected to the switchport G0/10 is shown as100-half. Which one is the correct setting then? Everything is working fine with NO CRC er...

I was wondering whether an ISR router is necessary for me to prepare for the CCNA . If so which one shall I get.Thanks

Hi All, I have two newly purchased (and very used) Cisco 3640 routers - each has a 2E2W Network Module and one WIC 2A/S. I can see both WIC 2A/Ss when I run a sho diag command, but I cannot confiure them as serial ports and do not see them in an...

I haven't mucked with VLAN partitioning in a while so I am drawing a blank. I hope you guys can help out.I have a carrier who is bringing in an ethernet connection to me and separating different customers by vlan. Each customer has their own distin...

I have a Cisco 2610 with NM-1FE fast ethernet port.this Fast Ethernet is connected to a Cisco 2960 on port g0/21. Port g0/21 is hard code to 100-fullduplex. The Cisco 2610 Fast ethernet interfaceis also hard code to 100-full duplex. However,on the...

I'm trying to setup my router as a dns server / forwarder, but the manuals are not really helping me out. What I'm trying to accomplish is the following:The router should function as a DNS server. It should forward domain specific requests for domain...

Hi all,i had a vtp problem yesterday after an engineer connected a catalyst switch with higher revision number to my LAN; this caused an overwrite of the vlan info on the vtp server (6509); i recreated the vlan database on the server after disconnect...

I have a 1721 router and am having problems connectioning it to my laptop. The laptop doesn't have a serial connection. I purchased a usb to ethernet adapter but can't seem to make it work. My thinking was to have the cable plugged into the consol...

I'm having trouble understanding IPv6 addresses. In IPv4 the CIDR slash notation means what subnet the address is in. But a /48 in IPv6 does not mean subnet. I have no idea what it means. For instance I've seen the address 2001:0:1:5::1/64, and I hav...

Hi FriendCurrently i am reading Etherchannel topic, i have some doubts , can someone please clarify... thanks in advance.1) What happend when any of the link down from bundel and then restore back ,should it take traffic automatecally ?2) Do i need t...