Switching

im trying to set up a new network back at the office but im having problems communicating between vlans.i hav one router(cisco 1941) and a switch (cisco catalyst 2960g). im using the router on a stick method.i have two vlans on the switch and i have ...

I see "unknown protocol drops" on an interface of a 2960 switch and have a question.The "unknown protocol drops" do not seem to clear when I clear counters on the interface. Does anyone know how to clear them?

Hi,I've a strange command output on a catalyst blade HP 3120 about the output drops. When I issue the command show interface I see the following:SWNCL6#sh int g2/0/2GigabitEthernet2/0/2 is up, line protocol is up (connected)   Hardware is Gigabit Eth...

Ok so I have a question about back to back VPC configuration.I have a back to back VPC from core to agg layer so that I have 2 logical switches in my path.However I am seeing an issue on the agg layer.  Traffic is traversing the VPC peerlink instead ...

Hi Anyone encountered reboot of 4500 switch after changinfg the Vtp domain name?Thanks in advance!

HI to all ,we have modem: with no RF problem   the modem access to the internet durning 3-4 min then we lost conncetivty (ping ) to the cpe mac and we see this error from the log :%UBR10000-3-BPI_ENFORCE: Blocking CPE=6c2e.85fd.3d66 CM=6c2e.85fd.3d64...

Hi All,By mistake, I have removed the passwords under line con 0 and line vty 0 4.After I signed out I realized that I can't access (telnet). It's always giving me this message " Password required, but none set".As I've also removed the password unde...

I am a programmer with a small company so I also have to wear the hat of systems admin, helpdesk, and network engineer.  I know enough about networking to be dangerous so if you will take the time to answer please put it in simple language as I don't...

        It was unclear to me from the CIsco VPC doc on whether a VPC (going to 2 separate 2Ks) will aggregate both links, and how does the process work for load balancing.   

Hi, i would like to configure a Trunk with all VLANs between a Cisco Catalyst 3650 an a DLINK DES-7210.On the DLINK is the def. GW via VRRP defined.Now i get the following Error:%ARP-4-DUPADDR: Duplicate address 172.28.72.1 on interface VLAN 72 port ...

hi all ,i have 192.168.2.0./24lan1--------asa1--------inteernet--------asa2------lan2192.168.0.0/24vpn ikev1 is upand lan1 can see lan2======================im sure that i put the remnote lan  of asa1 to "any"but only the traffic to lan2 is being go ...