Configuration Guide User guide

BigIron RX Series Configuration Guide 455
53-1002484-04
Chapter
17
Configuring VRRP and VRRPE
In this chapter
•Overview of VRRP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 455
•Overview of VRRPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 460
•VRRP and VRRPE parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 462
•Configuring parameters specific to VRRP . . . . . . . . . . . . . . . . . . . . . . . . . . 464
•Configuring parameters specific to VRRPE . . . . . . . . . . . . . . . . . . . . . . . . . 466
•Configuring additional VRRP and VRRPE parameters . . . . . . . . . . . . . . . . 467
•Displaying VRRP and VRRPE information . . . . . . . . . . . . . . . . . . . . . . . . . . 471
•Configuration examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 477
Overview of VRRP
This chapter describes how to configure the following router redundancy protocols:
• Virtual Router Redundancy Protocol (VRRP) – The standard router redundancy protocol
described in RFC 3768.
• VRRP Extended (VRRPE) – A Brocade proprietary version of VRRP that overcomes limitations in
the standard protocol. This protocol works only with Brocade devices.
This section presents the standard VRRP options and the options that Brocade added in its
implementation of VRRP.
Standard VRRP
VRRP is an election protocol that provides redundancy to routers within a LAN. VRRP allows you to
provide alternate router paths for a host without changing the IP address or MAC address by which
the host knows its gateway. Consider the situation shown in Figure 84.