JUNOSe 10.3.1 Release Notes
46
Known Problems and Limitations
The compound shared shaping feature does not work properly on egress
forwarding ASIC 2 (EFA2)-based ATM line modules when the shared shaper is
queue-controlled as opposed to node-controlled. In a node-controlled
configuration, in which you configure the shared-shaping rate on the best-effort
scheduler node for the logical interface, integration of the EFA2 and ATM
segmentation and reassembly (SAR) schedulers functions properly. However,
in a queue-controlled configuration, in which you configure the shared-shaping
rate on the best-effort queue for the logical interface, integration of the EFA2
and ATM SAR schedulers does not function properly. [Defect ID 69167]
Work-around:
Use node-controlled compound shared shaping configured on
the best-effort scheduler node with EFA2-based ATM line modules.
Egress strict-priority packets may experience high latency on OC3/STM1 ATM
interfaces associated with the LM if you have shaped the port rate to more than
148.5 Mbps. [Defect ID 80378]
Work-around
: To ensure low strict-priority latency, shape the port rate to no
more than 148.5 Mbps.
An error message regarding the qos-parameter instance
QosParameterDefinition is erroneously generated on an ERX1440 router when
it is configured for L2C and QoS RAM and receives TLV 144 (DSL Type). The
parameter instantiation actually functions properly. [Defect ID 80620]
The CLI erroneously enables you to configure a QoS profile with the
ethernet
node group
command. [Defect ID 80861]
The dynamic shaping rate calculated by the simple shared shaper can vary
because of the variation in the enqueue rate of the constituent queues. Even
when the offered load is constant, the mechanism that calculates the enqueue
rate introduces a slight variation, introducing a slight variation in the calculated
dynamic shaping rate. [Defect ID 80938]
On a router that has both an ES2 10G LM and an ES2 4G LM installed, the byte
count reported by the
show fabric-queue egress-slot
command is incorrect.
The reported packet count is correct. [Defect ID 80965]
On the E120 and E320 routers, you cannot attach QoS profiles to L2TP tunnels
by means of the CLI because the CLI does not pass the router ID to QoS.
[Defect ID 81516]
PPP sessions may be dropped if you change the shaping rate in a QoS profile
that affects thousands of circuits while QoS traffic affected by the profile is
being forwarded. [Defect ID 82950]
Work-around
: Do not change the shaping rate in a QoS profile that affects
thousands of circuits while QoS traffic is using the profile.
Egress traffic may be dropped on OC12/STM4 ATM interfaces if you have
shaped the port rate to more than 542 Mbps. [Defect ID 83785]
Work-around
: Do not exceed a shaped port rate of 542 Mbps.