Cabletron Systems CoreWatch, Руководство пользователя

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Chapter 8: Configuring IP Interfaces for the SSR
124 CoreWatch User’s Manual
Figure 67. Edit ACL dialog box
12. Select or clear the Filter State check boxes to specify whether you want the ACL to
filter inbound traffic ( Input ), outbound traffic ( Output ), or both input and outbound
traffic. Click OK .
Caution:
An IP interface can have up to two ACLs applied to it. If you applied two ACLs
to an interface, one ACL must govern the inbound traffic and the other ACL must govern
outbound traffic.
Configuring the SSR for VRRP
You can configure the SSR to operate with Virtual Router Redundancy Protocol (VRRP).
End host systems on a LAN are often configured to send packets to a statically configured
default router. If this default router becomes unavailable, all the hosts that use it as their
first hop router become isolated, unable to send packets. VRRP provides a way to ensure
that the default router on an end host is always available.
It does this by assigning IP addresses that end hosts use as their default route to a “virtual
router.” A Master router is assigned to handle routes designated for the virtual router. If
the Master router should become unavailable, a Backup router takes over and begins
handling routes for the virtual router.
Note:
You must specify at least one IP interface for your SSR before attempting to
configure for VRRP.