Figure 129: Directly Connected Ip Target; Figure 130: Multiple Hops To Ip Target - Alcatel-Lucent 7750 SR Manual

VPRN Service Overview
CPE Connectivity Check
Static routes are used within many IES and VPRN services. Unlike dynamic routing protocols,
there is no way to change the state of routes based on availability information for the associated
CPE. CPE connectivity check adds flexibility so that unavailable destinations will be removed
from the service provider's routing tables dynamically and minimize wasted bandwidth.
Server B.1
11.1.B.0
11.1.A.0
Server A.1
Server B.1
11.1.B.0
11.1.A.0
Server A.1
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Static-route 11.11.A.0/24 nexthop 10.1.1.2 cpe-check 10.1.1.2 interval 1 drop-count 2
Static-route 11.11.B.0/24 nexthop 10.1.1.2 cpe-check 10.1.1.2 interval 1 drop-count 2
10.1.1.0/31
VPRN A
.2 .1
CPE
7750-1
Node A

Figure 129: Directly Connected IP Target

IC-route 11.11.A.0/24 nexthop 10.1.1.2 cpe-check 10.2.2.254 interval 1 drop-count 2
IC-route 11.11.B.0/24 nexthop 10.1.1.2 cpe-check 10.2.2.254 interval 1 drop-count 2
10.2.2.0/24
254 .1
Management
CPE

Figure 130: Multiple Hops to IP Target

Backbone
10.1.1.0/31
VPRN A
.2 .1
7750-1
Node A
7750 SR OS Services Guide
Fig_18
Backbone
Fig_19