Recent content by civic00typer

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    Cisco VLAN/VTP Issues?

    Thank you for your help. Will implement your recommendations.
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    Cisco VLAN/VTP Issues?

    Can this topology change be triggered by adding/removing a VLAN from a trunk connected to an upstream switch? I was under the impression that the link that was shut will have to go through STP calculations, but not all other truck ports. Does this affect access ports without portfast setup?
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    Cisco VLAN/VTP Issues?

    Please explain, when you bring up a trunk port with STP enabled, it will cause all other truck ports to enter into a STP calc?
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    Cisco VLAN/VTP Issues?

    spanning-tree calculations will run before transitioning to forwarding... but can't see how that affects local switch traffic between two ESX hosts. The truck PG that is connected to ESX does not go down when I shutdown the uplink or remove the VLAN in question from the uplink truck. However...
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    Cisco VLAN/VTP Issues?

    A little background on my infrastructure: I have 3 VMware ESX Servers, each with a 2 channel port group setup as a trunk on a 2-member 3570G stack. There is a VTP server upstream on a core switch, however we allow only a certain number of VLANs through the upstream trunk to the core switches...
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    Thoughts on network segmentation...

    Please share your thoughts and advice on the following network. I just inherited a class c network (public IP addresses), split into three segments. The subnets are configured as follows: x.x.70.0/25 - Server Network x.x.70.64/25 - VPN Network x.x.70.128/24 - User Network This...
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    IPSEC VPN Tunnel and Multiple WAN Interfaces

    I have a Cisco 1800 router with a T1 serial interface and another interface setup with a cable modem. I have setup the cable modem interface as the backup and the T1 as the primary. I am using an SLA to rollover to backup interface in case of failure of the primary. I also setup a route map...
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    Magic of VSS... How does this work?

    Excelllent work... you have clarified my understanding of this process.
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    Magic of VSS... How does this work?

    I read that article... however, it still didn't answer my questions. Perhaps I missed something?
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    Magic of VSS... How does this work?

    I put this question before Microsoft today, however I didn't receive an answer that made sense... imagine that. Here is the scenario: **You have enabled Volume Shadow Copy Service 1. What happens when you first enable this service? Does it start tracking changes to the file system...
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    Running Config on Cisco 3750G for Review/Analysis

    Thanks everyone... I think I got a clear explanation of PortFast and BPDUs. The network admin SHOULD drop portfast and disable bpduguard on this port. Also should have been a trunk port. I can't do anything about it though... time to rig with the bpdu filter :). So what is spanning...
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    Setting MTU on Cisco 3750G Stack

    Thanks for the information. Makes sense now... shouldn't matter if the ports can support jumbo frames and I am only working with jumbo frames within my storage VLAN.
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    Running Config on Cisco 3750G for Review/Analysis

    Lenny - With more thought on the situation, I have another question LOL. If I setup PortFast on my Public LAN interface and the interface on my SAN switch (Gi1/0/24). Assuming this swtich has BPDUguard enabled and then I filter BPPUs on my SAN switch interface (Gi1/0/24). How is the STP...
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    Running Config on Cisco 3750G for Review/Analysis

    Lenny - Thanks for you advice regarding bridge protocol data unit filtering on Gi1/0/24... even though I didn't see this in the interface configuration I was given... must have been enabled globally. I am working with a LARGE University Network (Class B).... I don't have control over the...
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    Running Config on Cisco 3750G for Review/Analysis

    Thanks for the help everyone!
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