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Table 5: Application Support for Stateful SRP Switchover (continued)
Application
Supported
HDLC
SONET/SDH
SONET/SDH VT
Link-Layer
Protocols
ATM
ATM 1483 bulk
configuration of
dynamic interfaces
Bridged Ethernet
Cisco HDLC
Ethernet (with and
without VLANs)
Frame Relay
PPP
PPPoE
Transparent
bridging
Unicast Routing
Access Routes
BFD
Chapter 3: Managing Stateful SRP Switchover
Unsupported
Notes
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–
–
–
–
–
–
Static and dynamic interfaces, with the
exception of ATM subscribers, are
supported.
In this case, ATM subscribers refers to a
technology on the E Series router where
the ATM layer does authentication (that
is, not PPP or IP subscriber manager).
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
During a stateful SRP switchover, the
BFD transmit interval is set to 1000 ms
with a detection multiplier of 3. These
values result in a liveness detection
interval of 3000 ms. This longer interval
helps prevent a BFD timeout during the
switchover. BFD negotiates the interval
with the remote peer before applying
the temporary change. The BFD timers
revert back to the configured values after
15 minutes (the maximum duration for
graceful restart completion).
Application Support for Stateful SRP Switchover
33
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