how many sub-Interfaces we can create on Cisco router 3845 and /or IRS2911?

[m-abooali]

Hi,

I was wondering if you good folks can tell me how many sub-interfaces we can create on Cisco router 3845 and/or ISR 2911 to support vlans?

I assume there must be a limit!?

Best Regards,

Masood

[Mark Malone · Accepted solution]

Hi
Used to be 300 for all platforms but its moved on , would you be using more than that as subs ?

The maximum number of interfaces (physical, subinterface, or virtual) a router can handle depends on the maximum number of SWIDBs that the router can use. This limit used to be set to 300 for all platforms, but with the emergence of features such as frame-relay subinterfaces, multilink Point-to-Point Protocol (PPP), and virtual private dial-up network (VPDN) that uses virtual interfaces, this value has proven to be insufficient on some platforms.

[m-abooali]

Thank you. surely not more than 300 vlans.