Switching

Dears  when enabling multicasting on layer 3 interfaces the CPU becomes fully utilized , is there any specific configuration should be enabled to reduce this . Config :Inetface vlan 100ip pim sparse-denseip igmp version 3Inetface vlan 101ip pim spars...

does enabling jumbo frames on the 6509 require a reboot?

I have a very simple access list. I only want to allow the network 172.16.0.0 to have ssh access to my router. Here is the access listStandard IP access list 23    10 permit 172.16.0.0, wildcard bits 0.0.255.255I then applied it to line vty 0 4 and l...

Hi ExpertsI have a question regarding Fabric extenders (2148/2248).If the fex is physically disconnected  from 5K, Should  the fex config be retained or lost?I have a 2148t fex which was single homed to a 5K.The Fex was physically disconnected from 5...

Hi All,Myself Arijit.I just have one small quary. While monitoring the health of my company's network I found that the no of entries in MAC table changing rapidly and it is keep changing every time I hit the same command i.e # sh mac address-table.No...

Hi,I tried to find some information about the today's security issues of vlan technology (especially vlan hopping) but I only found documents from 2003 and earlier, like the following:http://www.cisco.com/warp/public/cc/pd/si/casi/ca6000/tech/stake_w...

I would like to implement one way ACL on VLAN means VLAN20 should communite to VLAN 10 but VLAN 10 wouldn't be able to initialize connection with VLAN20ACL which is result oriented for me isip access-list extended ACLpermit tcp 10.23.23.0 0.0.0.255 1...

We have a new Dell Poweredge R720XD server with quad NIC and I am testing Server 2012.I am currently testing the new teaming feature in 2012 and will then go on to test HyperV with the virtual switch.Curently my outsourcing partner has enabled LACP o...

Hello,One of our customer has  3 ISP Line, out of which Two are Broadband and One is Leased Line.   All 3 ISP interfaces are Etherent.Now, they want Auto Failover with Load balancing among these 3 ISP lines.Can we do same implementation in Cisco 1941...

Hello,From what I understand a 4948 has 3 asic's?  I am having trouble with iperf bandwidth tests on my 4948.  When I do tests on tests on the first asic I get odd results, but usually its horrible, say 30Mbit/sec or maybe up to 100Mbit.  Other asic'...