Verifying PIC Combinations
On Juniper Networks routing platforms, you can typically install any combination of Physical Interface Cards (PICs) on a single Enhanced Flexible PIC Concentrator (FPC) or in two PIC slots served by a single Layer 2/Layer 3 Packet Processing application-specific integrated circuit (ASIC).
Newer Junos OS services for some PICs can require significant Internet Processor ASIC memory, and some configuration rules limit certain combinations of PICs if they are installed on some platforms.
During software installation, the configuration checker in the installation program checks the router’s PICs. If any configuration rules affect your PIC combinations, the installation process stops and displays a message similar to the following:
The combination of PICS in FPC slot 3 is not supported with this release PIC slot 0 - PIC slot 1 - 1x OC-12 ATM-II IQ PIC slot 2 - 1x G/E IQ, 1000 BASE PIC slot 3 - 1x Link Service (4) If you continue the installation, one or more PICs on FPC slot 3 might appear to be online but cannot be enabled and cannot pass traffic with this release of JUNOS. See the Release Notes for more information. WARNING: This installation attempt will be aborted. If you WARNING: wish to force the installation despite these warnings WARNING: you may use the 'force' option on the command line. pkg_add: package /var/tmp/jbundle-7.6R1.x-domestic-signed.tgz fails requirements - not installed
The configuration checker has the following limitations:
If a PIC is offline when you upgrade the router with new software, the configuration checker cannot detect PIC combinations affected by configuration rules and cannot warn about them.
If you specify the force option when you upgrade the Junos OS, the configuration checker warns about the affected PIC combination and the software installation continues. However, after rebooting, one or more PICs might fail to initialize.
The configuration checker looks for combinations of three affected PICs. If an Enhanced FPC contains four affected PICs, the script generates multiple warnings.
If you install a PIC into a router already running
Junos OS, you can identify the presence of affected PIC combinations
from messages in the system logging (
Feb 6 17:57:40 CE1 feb BCHIP 0: uCode overflow - needs 129 inst space to load b3_atm2_LSI_decode for stream 12 Feb 6 17:57:41 CE1 chassisd: CHASSISD_IFDEV_DETACH_PIC: ifdev_detach_pic(0/3) Feb 6 17:57:41 CE1 feb BCHIP 0: binding b3_atm2_LSI_decode to stream 12 failed Feb 6 17:57:41 CE1 feb PFE: can not bind B3 ucode prog b3_atm2_LSI_decode to FPC 0: stream 12
For more information about checking for unsupported
PIC combinations, see the corresponding PIC guide for your router,
the Junos OS Release Notes
For SRX Series Services Gateways
SRX5600 and SRX5800 devices support IOC or SPC on any given
card slot, and there is no complexity in equipping the services gateways
with the perfect balance of processing and I/O capacity. You can install
up to 11 (on SRX5800) and 5 (SRX5600) SPCs and IOCs on the device.
However, you must install at least one SPC on device. For more details,
see SRX5600 and SRX5800 Services Gateway Card Guide
SRX3600 supports a maximum of up to seven SPCs,three NPCs, six
IOCs, and 11 NP-IOCs per chassis. However you must install at least
one SPcs and NPC on the chassis. SRX3400 supports a maximum of up
to four SPCs,two NPCs, four IOCs, and six NP-IOCs per chassis. However
you must install at least one SPcs and NPC on the chassis. On SRX3400
and SRX3600 devices you must install PICs on the front slots of the
chassis. For more details, see SR X1400 , SRX3400 , and SRX3600 Services Gateway Module Guide