JUNOSe 11.0.1 Release Notes
34
Known Behavior
Work-around
: Increase the hold time to provide sufficient time for interface
synchronization before the peers declare the adjacency down.
For OSPF, use the
ip ospf dead-interval
command to set the hold time. We
recommend that you use Bidirectional Forwarding Detection (BFD) with a
longer OSPF dead interval to achieve fast failure detection.
For IS-IS, use the
isis hello-interval
and
isis hello-multiplier
commands to
set the hold time.
We recommend the following hold times for each protocol, based on the
number of interfaces.
Subscriber Interfaces
MAC address validation is not supported on either of the following:
Packet-triggered subscriber interfaces that are created dynamically
Packet-triggered subscriber interfaces that are managed on the primary IP
interface
A packet-triggered subscriber interface is created when the router receives a
packet with an IP source address that does not match any entries in the
demultiplexer table. When the router detects an unmatched packet, it generates
a trigger event that determines whether to create a dynamic subscriber
interface or configure an existing interface. To configure packet detection on
the router, use the
ip auto-detect ip-subscriber
command.
System
ERX routers display different behavior from E120 routers and E320 routers
when reporting modules as inactive.
ERX routers report a module as inactive when either:
The I/O module is not present
The primary line module is fully booted and ready to resume operation. In
this case, the standby is currently providing services.
Interface Count
Recommended Hold Time
for OSPF
Recommended Hold Time
for IS-IS
16000 or less
80 seconds
50 seconds
16001 to 32000
87 seconds
55 seconds
32001 to 48000
90 seconds
70 seconds
