April 7, 2010

HSRP Interface Tracking

HSRP stands for “Hot Standby Router Protocol” RCF 2281 defines in detail HSRP - http://tools.ietf.org/html/rfc2281 The purpose of this post isn’t to dive into the details of HSRP but simply to shed light on an HSRP feature often overlook when setting redundant routers for redundant ethernet path. HSRP Election When powering up routers running HSRP, the routers (by default in group 0) starts sending to each other (multicast: 224. ... Read more