Hot Downloads

Welcome, Guest
Username: Password: Remember me
  • Page:
  • 1

TOPIC: One arm route

One arm route 13 years 1 month ago #8245

can anyone please tell me about One arm route

Please Log in to join the conversation.

Re: One arm route 12 years 10 months ago #9348

  • jwj
  • jwj's Avatar
  • Offline
  • Senior Member
  • Senior Member
  • Posts: 350
  • Thank you received: 0
I wasn't sure what one arm route meant, but I was suspecting it is another term for "router on a stick". I googled it, and lo behold, I was right! This is a term that means the interface on a router is routing multiple subnets. This can be done a couple of ways, either by creating secondary ip addresses on that interface, or by creating subinterfaces of that physical interface.

For example interface FastEthernet0/1 would be the real physical interface. A subinterface looks like this; interface FastEthernet0/1.1.

The advantage to this method is in cost savings. Extra blades or modules for routers are pretty expensive. The disadvantage is that it doesn't perform as well as a layer 3 switch.

Please Log in to join the conversation.


Re: One arm route 12 years 10 months ago #9350

  • tiamat
  • tiamat's Avatar
  • Offline
  • Distinguished Member
  • Distinguished Member
  • Posts: 102
  • Thank you received: 0
it also doesn't have to be routing different subnets or have different ip addresses or sub interfaces to be a router on a stick either. Although not an efficient method, a router with a single interface (and IP) can be the default gateway of all (or some) of the hosts on that particular subnet, routing traffic to other destinations.

Please Log in to join the conversation.

  • Page:
  • 1
Time to create page: 0.135 seconds


Cisco Routers

  • SSL WebVPN
  • Securing Routers
  • Policy Based Routing
  • Router on-a-Stick

VPN Security

  • Understand DMVPN
  • GRE/IPSec Configuration
  • Site-to-Site IPSec VPN
  • IPSec Modes

Cisco Help

  • VPN Client Windows 8
  • VPN Client Windows 7
  • CCP Display Problem
  • Cisco Support App.

Windows 2012

  • New Features
  • Licensing
  • Hyper-V / VDI
  • Install Hyper-V


  • File Permissions
  • Webmin
  • Groups - Users
  • Samba Setup