Configuring Layer 3 Redundancy with VRRP and GLBP参考.ppt

Implementing High Availability in a Campus Environment Configuring Layer 3 Redundancy with VRRP and GLBP VRRP VRRP Operational Process Configuring VRRP on an Interface Gateway Load Balancing Protocol Single virtual IP address and multiple virtual MAC addresses Traffic to single gateway distributed across routers Automatic rerouting in the event of any failure Full use of resources on all routers without the administrative burden of creating multiple groups GLBP Operations GLBP group members elect one AVG. AVG assigns a virtual MAC address to each member of the group. AVG replies to the ARP requests from clients with different virtual MAC addresses, thus achieving load balancing. Each router becomes an AVF for frames that are addressed to that virtual MAC address. GLBP Operation GLBP Operation (Cont.) GLBP Interface Tracking GLBP Interface Tracking (Cont.) Configuring GLBP on an Interface Summary VRRP provides router redundancy in a manner similar to HSRP. VRRP supports a master and one or more backup routers. VRRP and GLBP are configured per interface. GLBP provides router redundancy and load balancing. GLBP balances traffic by allocating a virtual MAC address to each AVF. Cisco Network Academy. All rights reserved.. CCNP+ BSMSN v3.0 Cisco Network Academy. All rights reserved.. CCNP+ BSMSN v3.0 Enable VRRP on an interface and display the configuration. Enable GLBP on an interface and display the configuration. * *