© 2006 Cisco Systems, Inc. All rights reserved. BCMSN v3.05-1 Implementing High Availability in a Campus Environment Configuring Layer 3 Redundancy with. - презентация

1 © 2006 Cisco Systems, Inc. All rights reserved. BCMSN v Implementing High Availability in a Campus Environment Configuring Layer 3 Redundancy with VRRP and GLBP

2 © 2006 Cisco Systems, Inc. All rights reserved. BCMSN v VRRP

3 © 2006 Cisco Systems, Inc. All rights reserved. BCMSN v VRRP Operational Process

4 © 2006 Cisco Systems, Inc. All rights reserved. BCMSN v Configuring VRRP on an Interface Enable VRRP on an interface and display the configuration.

5 © 2006 Cisco Systems, Inc. All rights reserved. BCMSN v 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

6 © 2006 Cisco Systems, Inc. All rights reserved. BCMSN v 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.

7 © 2006 Cisco Systems, Inc. All rights reserved. BCMSN v GLBP Operation

8 © 2006 Cisco Systems, Inc. All rights reserved. BCMSN v GLBP Operation (Cont.)

9 © 2006 Cisco Systems, Inc. All rights reserved. BCMSN v GLBP Interface Tracking

10 © 2006 Cisco Systems, Inc. All rights reserved. BCMSN v GLBP Interface Tracking (Cont.)

11 © 2006 Cisco Systems, Inc. All rights reserved. BCMSN v Configuring GLBP on an Interface Enable GLBP on an interface and display the configuration.

12 © 2006 Cisco Systems, Inc. All rights reserved. BCMSN v 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.

13 © 2006 Cisco Systems, Inc. All rights reserved. BCMSN v