Junos OS

Hi,

I am new to JUNOS PTX1k, how do I get the port-speed matching between these 2 PTX1K ports:

PTX1k-1   (et-0/0/37) -----------------------(port et-0/0/69) PTX1k-2

It seems PTX1k-1 et-0/0/37 already has broken into 4 channelized 10G ports already (I don't have physical access to it at the moment) whereas PTX1k-2 et-0/0/69 has 40G port-speed configured, as seen  below.

root@PTX1k-1> show interf terse
et-0/0/37:0 up down
et-0/0/37:1 up down
et-0/0/37:2 up down
et-0/0/37:3 up down

root@PTX1k-2> show chassis hardware 
Hardware inventory:
Item Version Part number Serial number Description
Chassis DP000 PTX1000
Pseudo CB 0 
Routing Engine 0 BUILTIN BUILTIN RE-PTX1000
FPC 0 REV 27 777-111111 AAAA1111 PTX1000
CPU BUILTIN BUILTIN FPC CPU
    PIC 0 BUILTIN BUILTIN 288X10GE/72X40GE/24X100GE
.......
       Xcvr 69 REV 55555-111110 NNNNNN QSFP+-40G-SR4

Right now, PTX1k-2   et-0/0/69 is not even visible.

root@ PTX1k-2> show interfaces et-0/0/69
error: device et-0/0/69 not found

Thanks,

Hi, first of all check what is configured in chassis section. And verify with this doc

By default, the network ports operate as channelized 4 x 10-Gigabit Ethernet interfaces

Can I collapse these 4 channelized 10G to connect to another 40G port?

Hey PL2,

Yes, you can, as per documentation by default, the network ports operate as channelized 4 x 10-Gigabit Ethernet interfaces—using QSFP+ to SFP+ fiber breakout cables—for a maximum of 288 10-Gigabit Ethernet ports. You can configure each of the 72 ports as a 40-Gigabit Ethernet interface, in groups of three ports—when you configure the first port in a port group to operate at 40 Gbps, that port and the next two ports operate at 40 Gbps.

If this solves your problem, please mark this post as "Accepted Solution" so we can help others too \:)/

Regards,
Lil Dexx
JNCIE-ENT#863, 3X JNCIP-[SP-ENT-DC], 4X JNCIA [cloud-DevOps-Junos-Design], Champions Ingenius, SSYB

From 'show chassis hardware', et-0/0/37 is 40G as seen below. How to make them compatible and connected?

PTX1k-1   (et-0/0/37) -----------------------(port et-0/0/69) PTX1k-2

root@PTX1k-1 > show chassis hardware
Hardware inventory:
Item Version Part number Serial number Description
Chassis DJ877 PTX1000
Pseudo CB 0
Routing Engine 0 BUILTIN BUILTIN RE-PTX1000
FPC 0 REV 18 755-555555 MCCC7777 PTX1000
CPU BUILTIN BUILTIN FPC CPU
PIC 0 BUILTIN BUILTIN 288X10GE/72X40GE/24X100GE
........
Xcvr 37 REV 01 777-777777 MN1111KA QSFP+-40G-SR4

PL2

Try this configuration:

PTX1k-1

set chassis fpc 0 pic 0 port 36 speed 40g

Please note that this command will configure these 3 ports to operate at 40GB

36,37,38 

PTX1k-2

set chassis fpc 0 pic 0 port 69 speed 40g

Please note that this command will configure these 3 ports to operate at 40GB

69.70,71

Do you want to know why it behaves like this ? is this expected?

Yes, it is, All network ports on the PTX1000 can be configured as 40-Gigabit Ethernet interfaces. You must configure 40-Gigabit Ethernet interfaces in groups of three network ports. When the port speed is configured as 40 Gbps on the first port in a port group, all three ports in the port group operate at 40 GB.

If this solves your problem, please mark this post as "Accepted Solution" so we can help others too \:)/

Regards,
Lil Dexx
JNCIE-ENT#863, 3X JNCIP-[SP-ENT-DC], 4X JNCIA [cloud-DevOps-Junos-Design], Champions Ingenius, SSYB

@LilDexx:

It still didn't work, as I did per your instructions.  Port et-0/0/69 of PTX1k-2

is still not found.

------------------

root@PTX1k-1# set chassis fpc 0 pic 0 port 36 speed 40g 

[edit]
root@PTX1k-1# commit 
commit complete

[edit]

root@PTX1k-1> show interfaces et-0/0/37 
Physical interface: et-0/0/37, Enabled, Physical link is Down
  Interface index: 419, SNMP ifIndex: 808
  Link-level type: Ethernet, MTU: 1514, Speed: 40Gbps, BPDU Error: None, Loop Detect PDU Error: None, Ethernet-Switching Error: None, Loopback: Disabled,
  Source filtering: Disabled, Flow control: Enabled
  Device flags   : Present Running Down
  Interface flags: Hardware-Down SNMP-Traps Internal: 0x4000
  Link flags     : None
  CoS queues     : 8 supported, 8 maximum usable queues
  Current address: aa:aa:aa:aa:aa:aa, Hardware address:  aa:aa:aa:aa:aa:aa,
  Last flapped   : 2020-03-02 09:59:41 PST (00:03:45 ago)
  Input rate     : 0 bps (0 pps)
  Output rate    : 0 bps (0 pps)
  Active alarms  : LINK
  Active defects : LINK, LOCAL-FAULT
  PCS statistics                      Seconds
    Bit errors                             1
    Errored blocks                         1
  Ethernet FEC Mode  :                   NONE
  Ethernet FEC statistics              Errors
    FEC Corrected Errors                    0
    FEC Uncorrected Errors                  0
    FEC Corrected Errors Rate               0
    FEC Uncorrected Errors Rate             0
  PRBS Statistics : Disabled
  Link Degrade :                      
    Link Monitoring                   :  Disable
  Interface transmit statistics: Disabled

------------
root@PTX1k-2# set chassis fpc 0 pic 0 port 69 speed 40g 

[edit]
root@ PTX1k-2# commit 
commit complete

[edit]

root@ PTX1k-2> show interfaces et-0/0/69 
error: device et-0/0/69 not found

Do you have 100gig enabled on port 71? it will disbale the port 69

Thanks
Vishal