Hoping someone can help me with this, if bpdu filter is applied on both ends of an ether channel trunk connecting stacked switches between two locations will stp still see the etherchannel as a single link ? will it result in loops ? the reason for such a scenario is that a few vlans needs to be extended between 2 sites and both these sites have the same sort of stp domain ie, vlans 1-4096 exists on site A and also on site B with core switches on respective sites configured as roots for the vlans. These sites are supposed to be independent but due to some business issues need to extend a few vlans across.
STP will always see the EtherChannel as a single logical link regardless of the BPDU filter settings. As long as you can be sure there aren't any L2 connections between these two sites that are outside of the EtherChannel, filtering the BPDUs to keep the locations' STP instances separate won't hurt.
Issue resolved by using "on" instead of lacp...it seems lacp has some issues in this scenario...irrespective of whatever configs i be tried one of the links was not playing ball and ended up as an isolated link causing the loops...changed the mode from lacp to just "on" and it was all stable and both links formed the channel.
The sites are connected via a service provider mux.
[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...