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JunosE 11.3.0 Release Notes
GRE
ICR
44
Known Problems and Limitations
After a stateful SRP switchover operation, if you delete the shared tunnel-server port
configured on an LM and configure the shared tunnel-server port on another LM, the
GRE tunnels are not transferred from the LM on which the tunnel-server port was
deleted to the LM on which the tunnel server was configured. The removed tunnels
do not come up until you perform an event that triggers the restoration of the GRE
tunnels, such as addition of new tunnels, deletion of other existing tunnels, or
configuration of an LM on the router chassis. This problem occurs only with GRE
tunnels after the completion of a stateful SRP switchover procedure. [Defect ID
187804]
Work-around: To correct this problem, create a dummy GRE tunnel interface for
temporary purposes using the interface tunnel command. Creation of the dummy
tunnel interface causes the previously-configured GRE tunnel-service interfaces to
be restored on the changed shared tunnel-server port on the LM. You can delete the
dummy tunnel interface after all the GRE tunnel interfaces are up.
If you saved the running configuration of the router as a script file (.scr) and execute
the script to apply the settings on the router, ICR partition configuration commands
in the .scr file might fail to add group members to the partition. This problem happens
when the subscriber configuration in the .scr file is placed before the ICR partition
configuration. However, this problem does not occur if you used a system
configuration (.cnf) file to set up the router. [Defect ID 183913]
Work-around: To correct this problem and enable ICR partitions to be created
correctly, make sure that you add the ICR partition configuration before the
subscriber interface configuration in the .scr file. You can perform this reordering by
modifying the .scr file to place the commands that configure subinterfaces for ICR
partitions before the commands used for VLAN-based or S-VLAN-based grouping of
subscribers.
When you configure ICR settings using a CLI macro, ICR commands are run in quick
succession. Sometimes, in such a scenario, the active SRP module resets if the event
that causes the change of state of the VRRP instance reaches the ICR application
before the ICR partition has been created. [Defect ID 184095]
Work-around: To avoid this problem, add an additional delay of one second using
the sleep command in the macro, before the ip vrrp vrid enable command that is
written in the macro to enable VRRP instance.
For example, consider a macro that contains the following commands:
vrid
ip vrrp
enable
vrid
partitionId
ip vrrp
icr-partition
Modify the macro, as follows, to add a delay of one second before the VRRP instance
ID is enabled on the router and a delay of another second before the ICR partition
that corresponds to the VRRP instance is created:
sleep 1
vrid
ip vrrp
enable
sleep 1
vrid
partitionId
ip vrrp
icr-partition
Copyright © 2010, Juniper Networks, Inc.
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