SRX Services Gateway
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SRX - Max subinterfaces

‎03-19-2012 03:38 PM

Anyone know if there is a limit to the amount of subinterfaces that can be configured on a SRX650?

I have about 580 or so... wondering if we will hit any type of limit one day

4 REPLIES 4
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SRX Services Gateway

Re: SRX - Max subinterfaces

‎03-19-2012 11:54 PM

Running Junos 10.4, SRX650 supports 2k logical interfaces; a 'logical interface' includes a broad range of things: RETH is a logical interface, and each member of a RETH is a separate logical interface; subinterface is a logical interface; fxp0 and HA connections are logical interfaces; etc.

 

If you have a standalone 650 with no HA, MPLS, tunnels, etc then you can get close to 2k subinterfaces. As you enable other features use some sort of interface that number will decrease.

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SRX Services Gateway

Re: SRX - Max subinterfaces

‎03-20-2012 02:10 AM
Is there some documentation somewhere which sas this?
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SRX Services Gateway

Re: SRX - Max subinterfaces

‎03-24-2012 10:16 AM

Hi ,

 

If you mean logical units (interfaces) by subinterfaces,  Then16384 is the maximum number.  For ethernet interfaces, i think this number is quite high ( as the maximum vlan no is 4K only)

 

[edit]
lab@host1-a# commit check
[edit interfaces st0]
  'unit 65432'
    ifl number above 16385 is allowed only for demux0 and pp0 devices
error: configuration check-out failed

http://www.juniper.net/techpubs/en_US/junos11.4/information-products/topic-collections/security/soft...

 

unit

Number of the logical interface created on a physical interface.

A value from 0 through 16384.

If no logical interface number is specified, unit 0 is the default, but must be explicitly configured.

Note: A VoIP interface must have the logical interface number 0

Regards,
Pradeep 2xJNCIE(SEC/ENT)
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SRX Services Gateway

Re: SRX - Max subinterfaces

‎12-11-2019 01:46 AM

The amount of logical units depends on the type of physical interface and its encapsulation configuration. as to GE interface, if the vlan-tagging is not enabled, the amout is 1, if the vlan-tagging is enabled, the amount depends on the range of vland id, as to srx650, it is 0-4094. we can get the valid range of vland id by trying a invalid vlan id as below

 

root@jiaxin# set interfaces ge-0/0/2 unit 0 vlan-id 10000
error: Value 10000 is not within range (0..4094)

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