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Hi,We have a Cat 6509 with Sup720, multicast routing emabled, PIM on relevant interfaces. In troubleshooting a multicast problem, I see the following behavior that I can't explain. I have wireshark running on my PC to watch IGMP, from which I am run...

In Switch4506 pop-up the log information.There isn't specific configuration in the device.The mac-address is a specific server's net card's address. The server maybe will send the packets which likes the ARP spoofing packets.I want to screen this log...

rhl_china by Level 1
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  • 1 replies
  • 0 Helpful votes

Is there anyway to get into the device when you don't have local user defined and you have lost TACACS server? I'm in the situation where I have lost TACACS server and there is no localuser defined in the device. I console into it and I get the usern...

nawas by Level 4
  • 459 Views
  • 8 replies
  • 0 Helpful votes

Hi all, if I created a rule on my firewall to allow any to any comms for all ip, would this have to look into every packet? and if I created a rule with a certain tcp port only allowed, which this mean less processing or more than the allow all rule ...

Hi AllI'm having a bit of a dilema configuring some 2960 switch ports for port security.Each Port must only see one legal device connected to it and shutdown should someone connect an illegal device.I have configured the port accordingly. But if I ha...

Hello , I have issue with DMVPN network , Dual HUB singel DMVPN Spoke-To-Spoke mode , running OSPF .When the Primery HUB is down , the Spoke router still send NHRP request to him .(IP OSPF priority and ip ospf network broadcast have been defined ).Do...

y-asulin by Level 1
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  • 1 replies
  • 0 Helpful votes

Can someone help me please ?I have a system with a single NIC with one IP adress of 198.x.x.x in VLAN 10 & we require an IP address of 172.x.x.x as the 2nd IP address on the NIC. This system is connected to a 6509 switch. VLAN 10 is having restricte...

hello,I tried to configure QOS on a Cisco 871 for the following scenario: two computer are connected to two vlan1 fastethernet ports and a third computer is connected to the WAN fasteth port. the incoming traffic from the vlan and outgoing to the wan...

I am having connectivity issue with 3750 switch ports.After connecting cables to the switch port the port will not turn on meanwhile other ports are working fine.I tried to do no shut,speed auto,duplex auto but nothing good.Does somebody have any ide...

kolawole1 by Level 1
  • 698 Views
  • 10 replies
  • 0 Helpful votes