I don't think filtering based on label is a very flexible approach, and I don't think the SP lab would present a scenario where you would need to filter labels in between AS.
To be honest, I'm not sure any vendors support it yet! --Dan > -----Original Message----- > From: Kaj Niemi [mailto:[email protected]] > Sent: 10 September 2009 09:32 > To: Daniel Holme > Cc: [email protected]; Francisco; [email protected]; Jo > Knight; Bryan Bartik > Subject: Re: [OSL | CCIE_SP] Inter-AS VPN Option B and send-label > > Hi, > > > Right, obviously one can filter using as path, extcommunity, etc. on the > control plane. As another side note I don't think currently cannot filter on > VPNv4 address (you can filter with the part after the RD) but that might > have changed since last time I had to play with this. > > I was referring to the fact that the ASBR doesn't check incoming labels at > all if the interface is in the global table and thus it'll accept pretty > much any valid label (or stack of labels) on the data plane for forwarding. > ;) > > With option D are you referring to draft-kulmala? Are you using it anywhere? > > > Kaj > > > > > From: Daniel Holme <[email protected]> > > Date: Thu, 10 Sep 2009 00:57:51 -0700 > > To: Kaj Niemi <[email protected]>, Bryan Bartik <[email protected]>, Jo > Knight > > <[email protected]> > > Cc: <[email protected]>, Francisco <[email protected]>, > > <[email protected]> > > Subject: RE: [OSL | CCIE_SP] Inter-AS VPN Option B and send-label > > > > As a side note you can filter between AS when using option B, you just > > have to filter the BGP extended RT community. So, you do have some > > granular filtering available to you. > > > > Just to confuse you all, option D has been developed which is a mixture > > of A & B, but maybe you should read about that after you've finished > > your lab studies :-) This email has been scanned for all viruses. Please consider the environment before printing this email. The content of this email and any attachment is private and may be privileged. If you are not the intended recipient, any use, disclosure, copying or forwarding of this email and/or its attachments is unauthorised. If you have received this email in error please notify the sender by email and delete this message and any attachments immediately. Nothing in this email shall bind the Company or any of its subsidiaries or businesses in any contract or obligation, unless we have specifically agreed to be bound. KCOM Group PLC is a public limited company incorporated in England and Wales, company number 02150618 and whose registered office is at 37 Carr Lane, Hull, HU1 3RE. 118288 - KCOM UK Directory Enquiries. Calls will cost no more than 49p connection + 14p per minute including VAT from a KC or BT landline. Call charges from mobiles and other networks may vary. If you are calling from a mobile you will now receive your requested number via text message. You will not be charged for the text message. _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
