Switching

Hi All,I have been asked to look into the performance of my LAN as it seems "slow". I have started some initial testing with iperf from my desktop to servers and from servers to servers. I think I understand the output, but I just wanted to make su...

Starting point: 8-3550 Switches, 1-2811 router (10.2.232.250), all on one subnet 10.2.232.0:255.255.252.0, one VLAN=1. ALL WORKS FINE.I'm adding VLANs and I need to enable routing on the switches for Inter-VLAN routing. However, when I enable ip rout...

i am trying to decide on what switches i should run in our new data center. we are a mid size company with an integrated voip system (400 phones) - web farm - sql servers etc. i am considering the 3750 series and the 3560 series. we want to run a gig...

I had this question on the CCNA exam and wasn't sure about it and can't seem to figure it out from the book. PC A is trying to reach PC B going through a switch, then a router, another switch ending up on PC B. What MAC add. and IP add. is used in ...

Is it correct that when upgrading a major IOS release on a 6509 with dual sup 720's that the chassis blades must be restarted? I was under the impression that it was possible to upgrade without any downtime.

Hi,I have a case of an internet router having 100% CPU utilization; it seems there is a DoS attack on my internet link! How can I view the connections flowing through the router and on what ports are highly utilized? Also, how can I protect the route...

Hi,I am after configuring 2 ISP connections on my perimeter router; the connection from ISP A is to be dedicated for regular users internet access and for some servers' inbound access. On the other hand, connection from ISP B is dedicated for VIP use...

Hi,I have 2 sup720, I read the documentation of 6509 but I found information of how can I configure SSO and RPR mode, and it works , But I didn't found a documentation who explain me and gives advices about why or why not I use SSO or RPR.Regards

can someone please tell me the concept of sup eng and its different versions plz....i know that supis used for routing and switching......so then what is MSFC and ppl say MSFC is builtin.....like whats the main def between sup 1, 2 ,3 ,4 and now aday...

How to chk the discard frames in switch,how to trubleshoot ?Thanks in advance.bill

What is the exact cause of the following error in syslog ? %AMDP2_FE-3-UNDERFLO: FastEthernet3/0 transmit error The Cisco lookup statues "no action required" and "the system should recover" but I have a management that believes it's a serious issue...

Hey guys!In a typical access/distribution layer setup, why it it that when I start ethereal/wireshark on a regular host, I see EIGRP and HSRP multicast traffic (224.0.0.2 & 224.0.0.10)?I thought this multicast traffic should only go between the two d...