- Related Topics
- Errata with the MX960 Router Documentation
Outstanding Issues with the MX960 Router
This topic lists outstanding hardware issues with the MX960 Ethernet Services router. For information about software issues, see the JUNOS software release notes.
- Juniper Networks strongly recommends that you install
JUNOS Release 8.2R2 or later before deploying the MX960 Ethernet Services
router into service.
- JUNOS Release 8.2R1 does not allow you to complete an install from the USB dongle. Use JUNOS Release 8.2R2 instead. [PR/98563]
- In JUNOS Release 8.2R1, a condition can exist where both fan trays are shut down by the system, but the system continues to operate. This can potentially result in serious overheating and damage to the DPCs. Use JUNOS Release 8.2R2 instead. [PR/94692] [PR/289154]
- The XFP cages and optics on the MX960 Ethernet Services router are industry standard parts which have limited tactile feedback for insertion of optics and fiber. You need to insert the optics and fiber firmly until the latch is securely in place. [PR/98055]
- Although the MX960 Ethernet Services router can support
any combination of 11 DPCs and the redundant third SCB, the power
supply cannot support all 12 DPCs if an Enhanced Queuing DPC is inserted
into any slot of a fully loaded chassis. The Enhanced Queuing DPCs
exhibit the following behavior:
- When you insert an Enhanced Queuing DPC into slot 6 of a powered-on MX960 router, the DPC will not power on.
- When you insert a DPC into slot 6 of an MX960 router containing an Enhanced Queuing DPC in any slot, the DPC will not power on.
- When you insert an Enhanced Queuing DPC into any slot of an MX960 router containing a DPC already powered on in slot 6, the Enhanced Queuing DPC will not power on.
These scenarios raise an FPC misconfiguration red alarm due to the DPC's high power consumption. To clear the alarm, perform one of the following actions:
- To temporarily take the DPC offline, use the request
chassis fpc slot slot-number offline command
from the CLI.
Note: The router does not preserve the state after a reboot.
- To take the DPC offline and preserve the state after a reboot, use the set chassis fpc slot-number power off command from configuration mode.
- Remove the powered-off DPC from the MX960 router.
Juniper Networks also recommends the following best practices:
- Use all other slots before using slot 6.
- Remove any unused DPCs plugged into the MX960 chassis.
