[AusNOG] stp & hsrp issue

[Alex Samad - Yieldbroker]

Just to update the list

Seems like there is an open bug with ehwic  and stp & hsrp :(

A

> -----Original Message-----
> From: Alex Samad - Yieldbroker
> Sent: Sunday, 26 January 2014 1:41 PM
> To: ausnog at lists.ausnog.net
> Subject: stp & hsrp issue
> 
> Hi
> 
> Currently waiting for a tacs call back, thought I would ask the list instead see if
> anyone has seen this before
> 
> 2 x 2901 router + ewhic  "r1" "r2"
> 
> 
> 2 x 3750 switch (stacked)  "sw"
> 
> R1
> 0/0/0 -> R2 trunk
> 0/0/3 -> sw trunk (sw limits to vlan 100, pvid 1)
> 
> R2
> 0/0/0 -> R1 trunk
> 0/0/3 -> sw trunk (sw limits to vlan 100, pvid 1)
> 
> I have used port costing/priority to set the block on r2 -> sw port not r2 -> r1
> ports
> 
> 
> On r1 & r2
> I have  hsrp
> R1 is master
> R2 is slave.
> 
> 
> My sw complains that is see the mac of r2 show up on the port that connects
> r1 -> sw and also on the port that connects  r2 -> sw (on vlan 100 for both
> ports)
> 
> The HSRP is setup on vlan 100
> 
> If I do a sho spanning tree blocked all the vlans are blocked on r2 -> sw2 ... so
> nothing should be sent here !
> 
> Its like HSRP is not listening to stp ....
> 
> When I make r2 the master node in hsrp, R1's mac doesn't flip between both
> ports !
> 
> A
> 
> 
> 
> 
>