Can you use interface range on subints?

int range gigabitEthernet 0/0/0.2 - gigabitEthernet 0/0/0.50

Never tried it personally.


> From: [email protected]
> Date: Thu, 18 Sep 2014 21:56:01 -0400
> To: [email protected]
> Subject: [c-nsp] Bulk applying filters to subinterfaces
> 
> So we’re a bit odd in that our small cadre of DSL subs don’t use PPPoE or 
> even DHCP (these are mainly business customers).  This is mostly just inertia 
> - static setup works, we have a system for adding circuits that works, etc.
> 
> So we have a GigE interface, and each sub comes in on a VLAN.  Our CLEC deals 
> with the ATM to ethernet conversion, so these really just look like a bunch 
> of plain old ethernet VLANs.
> 
> Our problem is the our CLEC supplies the CPE.  A large number of them are 
> broken in fun ways - for example, they run UPNP, a DNS recursor and an NTP 
> server.  Guess what happens if you configure these services to only listen on 
> the LAN?  Well, it still listens on the WAN side.  And UPNP is more fun, 
> disabling the service does not disable it.
> 
> So we now have customers being used in DDoS attacks as amplifiers (UPNP is 
> apparently the hot new thing).  I need to basically drop an access list on 
> every sub.  If we were running PPPoE, this would be easy, just make it part 
> of the cloned template.
> 
> Are there any cool tricks that cover plain old ethernet subinterfaces that 
> would allow me to add an access-list to all of them in one fell swoop?
> 
> Thanks,
> 
> Charles
> 
> _______________________________________________
> cisco-nsp mailing list  [email protected]
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
                                          
_______________________________________________
cisco-nsp mailing list  [email protected]
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/

Reply via email to