Switch User Manual

284 IP Routing Conﬁguration and Management

To view and graph general VRRP statistics, use the following procedure:

Step Action

Select IP Routing > VRRP from the Device Manager menu. The

VRRP dialog opens with the Globals tab selected. Select the Stats

tab. This tab is illustrated below.

VRRP dialog - Stats tab

Using the provided ﬁelds to view and graph the general VRRP

statistics. The following table outlines these ﬁelds.

Stats tab ﬁelds

Field Description

RouterChecksumErrors The total number of VRRP packets received

with an invalid VRRP checksum value.

RouterVersionErrors The total number of VRRP packets received

with an unknown or unsupported version

number.

RouterVrIdErrors The total number of VRRP packets received

with an invalid VRID for this virtual router.

—End—

Equal Cost MultiPath (ECMP)

The Equal Cost MultiPath (ECMP) feature allows routers to determine equal

cost paths to the same destination preﬁx. The multiple paths can be used

for load sharing of trafﬁc and allows faster convergence to other active paths

in case of network failure. This section describes the procedures used to

conﬁgure ECMP on the switch using the Java Device Manager.

Note: ECMP is only supported on the Nortel Ethernet Routing Switch

5520 and 5530. ECMP will work in a mixed stack but will not run on any

Nortel Ethernet Routing Switch 5510 units in the stack.

Nortel Ethernet Routing Switch 5500 Series

Conﬁguration-IP Routing Protocols

NN47200-503 03.01 Standard

5.1 27 August 2007