By Cisco Systems
A community with excessive availability presents substitute capability wherein all infrastructure paths and key servers could be accessed ax all occasions. the new Standby Router Protocol (HSRP) is a type of software program positive aspects that may be configured to supply Layer three redundancy to community hosts. HSRP optimization offers instant or hnk-specific failover in addition to a restoration mechanism. digital Router Redundancy Protocol (VRRP) and Gateway Load Balancing Protocol (GLBP) are derivatives of HSRP, supplying extra Layer three redundancy good points corresponding to load balancing.
Read or Download Building Cisco Multilayer Switched Networks. Student Guide PDF
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Extra resources for Building Cisco Multilayer Switched Networks. Student Guide
The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual study. 5-51 Identifying the VRRP Operations Process This topic describes VRRP operations. VRRP Operational Process © 2006 Cisco Systems, Inc. All rights reserved. 0—5-3 This figure shows a LAN topology in which VRRP is configured so that routers A and B share the load of being the default gateway for clients 1 through 4. Routers A and B act as backup virtual routers to one another should either one fail.
1DSW1 determines that the active router has a lower priority. 295, 1DSW1 immediately sends out a coup message, indicating that 1DSW1 is transitioning into the active router. 1DSW2 enters the speak state and eventually becomes the standby router. 847: © 2006 Cisco Systems, Inc. , for the sole use by Cisco employees for personal study. The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual study. 5-47 Summary This topic summarizes the key points discussed in this lesson.
5-37 Addressing HSRP Groups Across Trunk Links This subtopic describes how HSRP devices can provide primary paths for some data and backup paths for other data when VLANs and trunks are deployed in the network. Addressing HSRP Groups Across Trunk Links • To load balance routers and links: – Per VLAN, configure the HSRP active router and the spanning tree root to be the same multilayer switch. © 2006 Cisco Systems, Inc. All rights reserved. 0—5-11 Routers can simultaneously provide redundant backup and perform load sharing across different IP subnets.