Switching

Hello,I'm sorting some switches out and it seems many ports have root and BPDU guard enabled on them, but I can't understand why?  Surely if you have BPDU guard enabled it will stop a superior BPDU thus stop STP recalculating paths to a new root brid...

Helo,I'm just conencted to a switch and it has DHCP snooping, which I've configured before, here is the config:ip dhcp snooping vlan 1no ip dhcp snooping information optionno ip dhcp snooping verify macip dhcp snoopingWhat I dont understand it what t...

Dear Experts,I'm trying to get the VFC up in B22-FEX blade in Dell whic is connecting to Nexus 5596UP.Could you take a look at this and help please.Attaching the config of 5596UPThe message I get is# sh int vfc1033vfc1033 is down (Error Disabled - VL...

Hi allI need to generate some traffic to test my WAN to multiple sites, are there any freeware traffic generators that are decent ?cheersCarl

i have a small doubt regarding dhcp v6 and v4 . why clients requesting for a ip from dhcpv6 server always uses a fixed port( 546 in case of v6 and 68 incase of v4) . Generally for all other traffic such as http request from client the source port wil...

I am trying to config the following setup in the Cisco 1841. Able to ping the IPs of Vlan1(FE0/0/1), Vlan2 (FE0/0/1) and FE0/1 IPs from crossponding networks. But packets are not flowing to other side. Any clue?

i try newest ios 15.1(3)S0a and 12.2(33)SREin both case some times i obtain lowing traffic on interface and highest cpu - to 100%after clear cef linicard i obtain growing traffic and cpu 0%#sh proc cpu sCPU utilization for five seconds: 87%/83%; one...

Hi guys and galsi am currently studying for my CCNA and an practising with a cisco 1801 router i bought from ebay. I have set it up to the best of my knoledge but for some reason my vlans cannot talk to each other and i dont understand why.I have the...

Hello,I have a SG300 Switche working in layer 3 mode.I configured 3 VLANs on the switch with different ip'sVlan 1: 192.168.1.1Vlan 2: 192.168,2.1Vlan 3: 192.168.3.1Now I want to implement ACL to permit vlan2 to have full access on vlan3 but I want t...

Good day, folk.In  "How to display the EOBC error counters in the Catalyst 6500 series switches and a definition of the EOBC interface" document here on support forum stays that The Ethernet Out of Band Channel (EOBC) is a  half duplex channel that s...

I configured a VLAN For HSRP, where I gave the VLAN a separate IP on aech switch (172.16.250.3 and 172.16.250.4). and a virtual of 172.16.250.1, I have a default route of 0.0.0.0 0.0.0.0 172.16.250.2 (downstream HA pair of Sonicwall Virtual IP). So i...

Dear Experts,During the BGP configuration activity, I have faced an issue.Topology :Configuration :TATA and Airtel Router are configured with VRRPTATA and Airtel Router are configured with iBGPAirtel configured as secondary using as-prepend.When Prob...

Dear experts,I have the following errordisabled state on VFc as below.(Trying to get FCoE up and running for FC and automatically read WWN from Dell blades (M1000e) with two Nexus B22 FEX for Dell)The Eth interfaces are showiingN5KMR2E1-1(config-if)#...