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Hi,I have the following scenario:I have a computer connected to a Switch3750G and another computer connected to another Switch3750G. Theses switches are connected through a Optical Fiber link in the uplinks of the boths Switchs 3750. The computers ar...

Good Morning. I followed the 3-switch Redundant stacking diagram and now when I boot up the stack Switch 2 is acutally Member 3 and Switch 3 is Member 2. We plan on having Port-Channels spanning across Switch 1 - Master and Switch 2 (Member 3) of ide...

Hello,I have a general question about the performance of supervisors Blade 6500.Example:I have 10 servers each connected with gigabit port.I am migrating my 10 servers to a solution like ESX server and connect it to a TenGigabits port.As information ...

I work at a hospital and we have 3750X-48P switches in stacks in various locations throughout the hospital.  We have noticed that when an EKG machine is plugged into one of the ports on some of these switches and the EKG machines are set manually to ...

cburrus by Level 1
  • 3886 Views
  • 5 replies
  • 0 Helpful votes

Hi All,I'm using ERSPAN on my Nexus 5548 switches. Source: Interfaces on Nexus, destination: An Ubuntu box running Wireshark.I'm able to capture packets with this method, but wireshark gives me TONS of expert errors saying: TCP Ack'd lost segment. Th...

rtjensen4 by Level 4
  • 552 Views
  • 2 replies
  • 0 Helpful votes

Hi everyone,I have a 3560 switch with the following ports configinterface FastEthernet0/43description : Link to PC + ShoreTel IP Phoneswitchport access vlan 120switchport trunk encapsulation dot1qswitchport trunk native vlan 120switchport mode access...

Hello all,I have a question related to the ARP table and ip helper forwarding. Suppose a VLAN is configured for ip helper forwarding of DHCP requests,when the DHCP server replies with an offer, it is sent to the forwarding switch, the switch then sen...

gnijs by Level 4
  • 1158 Views
  • 2 replies
  • 0 Helpful votes

Hi,Im wondering if anyone can see if I did any fault or if I just missed something.Im trying to stack 2 3750E-24PD-S and 2 3750X-12S-S. The 2 3750E finds eachother and stacks with one master as they should. The problem is that and the 3750X does the ...

Resolved! Bad Pings to PC

I'm pinging a device from a switch that keeps err-disabling from link flap. I've disabled link flap detect on the switch so it doesn't keep going down. The PC and switchport are both set to 100 full. I've moved the PC to a different switch and still ...

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