SAPs
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SAPs
Encapsulations
The following SAP encapsulation is supported on IES services
• Ethernet null
• Ethernet dot1q
• Ethernet QinQ
Routing Protocols
IES IP interfaces are restricted as to the routing protocols that can be defined on the interface
based on the fact that the customer has a different routing domain for this service. The IES IP
interfaces support the following routing protocols:
• OSPF
• Static routing
• IS-IS
• PIM (only on 7210 SAS-M Network mode)
Note that the SAP for the IES IP interface is created at the IES service level, but the routing
protocols for the IES IP interface are configured at the routing protocol level for the main router
instance.
CPE Connectivity Check
Static routes are used within many IES 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.
The availability of the far-end static route is monitored through periodic polling. The polling
period is configured. If the poll fails a specified number of sequential polls, the static route is
marked as inactive.
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