BigIron RX Series Configuration Guide 451
53-1002253-01
Chapter
17
Configuring VRRP and VRRPE
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.
FIGURE 84 Router1 is Host1’s default gateway but is a single point of failure
Host1
Default Gateway
192.53.5.1
Internet
or
enterprise Intranet
Internet
or
enterprise Intranet
e 2/4
e 1/6
192.53.5.1
Router1 Router2
e 3/2
e 1/5
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