You may want to take a peek at this link(watch wrap): http://www.cisco.com/univercd/cc/td/doc/product/l3sw/8540/rel_12 _0/w5_11_19/config/8500cnfg.htm#15915 Specifically, I direct your attention to the note listed on the page which states: Note BVIs do not support IP multicast routing. As far as DVMRP is concerned, most Cisco routers interoperate very well with DVMRP, since it came along before PIM however, Cisco routers natively do not support DVMRP as the sole multicast routing protocol. According to this link here, DVMRP tunneling is supported on the CSR: http://www.cisco.com/univercd/cc/td/doc/product/l3sw/8540/cnfg_g d/1cfg8540.htm I have no idea how you would go about configuring it and whether it could be tunneled over a BVI interface. HTH, Paul Werner > Date: Wed, 15 Aug 2001 03:50:52 -0400 > From: "Rick Foster" > Subject: multicast on 8540 BVI interfaces [7:16136] > > We have 8540 CSR sitting at the core of our network. > Three 5500 switches connect to it via gig uplinks. > We have three different IP subnets and all the three 5500's have users > from > all these three subnets. > > Due to this we had to configure BVI on the 8540 and make the interfaces > connecting to each of these switches part of the bridge group 1 > (corresponding to the BVI interface 1). > We have enabled ip routing on the bvi interfaces. > > The need is to enable multicast traffic to be forwarded on these BVI > interfaces so that multicast traffic orignating from one of the 5500 > switches can be heard by the other two 5500 switches. > I believe PIM cannot be configured on the BVI interfaces, thus can > anyone > help in configuring DVMRP on the BVI interfaces so that multicast > traffic > can be forwarded. > > If there is an alternative to DVMRP please suggest the same. > Thanks in anticipation ________________________________________________ Get your own "800" number Voicemail, fax, email, and a lot more http://www.ureach.com/reg/tag Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=16197&t=16136 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]