JunosE 11.1.1 Release Notes
34
Known Behavior
Copyright © 2010, Juniper Networks, Inc.
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When you configure the router with an address pool that has two IP address ranges,
only the range that you configured first is available via the MIB.
SRC Software and SDX Software
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The SRC client does not prevent you from changing the name of the router while the
client is connected to the SAE, resulting in SAE issues such as lost IP addresses and
stale users.
Work-around
: To change the router name while the SRC client is connected to the
SAE, shut down the SRC client, change the name, then re-enable the SRC client.
SSH
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If the SRP module restarts when SSH is configured in a VR other than default, SSH
can sometimes become disabled. This happens if SSH attempts to bind with a VR
before the VR comes back up after the restart. In this event, a warning message is
generated to alert you to the fact that SSH is disabled in that VR. You must manually
re-enable SSH either by accessing the console VTY or creating a Telnet session to
the router.
Stateful SRP Switchover (High Availability)
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Additional processing is required to maintain and mirror the necessary state
information that enables subscriber sessions to stay up across an SRP failover. As a
result, the performance of other control plane functions is reduced. Specifically, call
setup rates are lower than in previous releases.
We have ongoing development activities to characterize and improve call setup rates
in future releases.
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Stateful SRP switchover remains inactive for 20 minutes after an initial cold-start or
cold-restart of the router. This delay enables the system to reach a stable
configuration before starting stateful SRP switchover.
If you want to override the 20-minute timer, turn high availability off by using the
mode file-system-synchronization
command, and then on again by using the
mode
high-availability
command.
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When IP tunnels are configured on a router enabled for stateful SRP switchover, and
the Service Module (SM) carrying these tunnels is reloaded, stateful SRP switchover
transitions to the pending state. Stateful SRP switchover remains in the pending
state for 10 minutes following the successful reloading of the SM. This amount of
time allows for IP tunnel relocation and for the tunnels to become operational again
on the SM. If an SRP switchover occurs while in the pending state, the router
performs a cold restart.
Work-around
: None.
Informational Note:
Rapid call setup rates are most important following an outage
that causes all subscribers to drop, because many of the dropped subscribers will
immediately attempt to reconnect. This type of outage occurs far less frequently with
stateful SRP switchover.
