Would somebody mind taking the time to explain to me how SVI's work with a 3550? I currently have 6 3550's with both PC's and Cisco IP Phones plugged into them and am wondering what benefits I may be losing by not having a distribution layer switch in place. I was thinking that it would be better to have the 6 3550's connecting up into a distribution layer switch (a 4500 maybe), so I could then apply security to the router interfaces.
It really just depends on your network topology whether or not you will have devices that can go into a layered architecture.
SVI's are just virtual layer 3 interfaces. Just a form of configuring InterVLAN routing on a multilayer switch.
All you need to do is have a local VLAN configured and applied to any switchport that correlates to an SVI. By doing this the SVI can be the default gateway for that VLAN. ACL's and things like that can be applied to the SVI for security.
[toc:faq]The ProblemOn traditional switches whenever we have a trunk
interface we use the VLAN tag to demultiplex the VLANs. The switch needs
to determine which MAC Address table to look in for a forwarding
decision. To do this we require the switch to do...
[toc:faq]Introduction:Netdr is a tool available on a RSP720, Sup720 or
Sup32 that allows one to capture packets on the RP or SP inband. The
netdr command can be used to capture both Tx and Rx packets in the
software switching path. This is not a substitut...
IntroductionOSPF, being a link-state protocol, allows for every router
in the network to know of every link and OSPF speaker in the entire
network. From this picture each router independently runs the Shortest
Path First (SPF) algorithm to determine the b...