tag:blogger.com,1999:blog-3993498847203183398.post8496474470259433298..comments2024-03-28T09:19:27.451+00:00Comments on RevK<sup>®</sup>'s ramblings: BGPRevKhttp://www.blogger.com/profile/12369263214193333422noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-3993498847203183398.post-63636662659323707052014-10-04T20:45:39.067+01:002014-10-04T20:45:39.067+01:00There's another element to consider: currently...There's another element to consider: currently, switching LNS switches the IP address of the endpoint, which happens to influence BT's internal routing of that traffic. That's how a bad BT Wholesale 10G backbone port was found by BT TSOps earlier this year (and how RevK was able to work around it for me while BT were tracking it) - if the IP address were kept constant by VRRP, we'd probably never have been able to find that BT fault to get it fixed.<br /><br />Having said that, syncing session state between a pair of Firebricks in a master-slave pair might be workable, pfsync-style, and avoid losing the session in almost every case...jas88https://www.blogger.com/profile/05563592458314214904noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-8722954269391022302014-10-03T11:47:22.399+01:002014-10-03T11:47:22.399+01:00We did have that in the past - it did not scale as...We did have that in the past - it did not scale as well as we would like. Even so, whilst uptimes are lower, the downtime in tiny - i.e. as fast as your router will reconnect (which can be well under a second with the right kit).RevKhttps://www.blogger.com/profile/12369263214193333422noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-83447496739288386862014-10-03T11:44:59.064+01:002014-10-03T11:44:59.064+01:00For the next trick, could you look at what might b...For the next trick, could you look at what might be involved to allow hitless reloads of the LNS routers? Currently PPP session uptimes on A&A are typically much lower than bogons, zen, etc.Anonymoushttps://www.blogger.com/profile/17054373270539545896noreply@blogger.com