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utawakevou
Participant

Port speed for 802.11Q vlans on Cisco Router ?

I got a Cisco 2800 router and am planning to use FastEthernet 0/1 to trunk in 802.11Q VLAN's to cater for some of our radio links. Can someone point me to a document that can help me fully understand the speed and operation of the sub-interface that will be created. Or explain it here. We got a radio link that we want to trunk into this Cisco 2800 and it is suppose to be connecting at 100Mbps but currently operating at around 80Mbps. Reports shows that the max in and out traffic for this link this year till today is 25Mbps. Will it not fail teh CPU etc ?

interface FastEthernet0/1

no ip address

!

interface FastEthernet0/1.701

description WAN Radio Link One

encapsulation dot1Q 701

ip address 192.168.14.30 255.255.255.0

!

interface FastEthernet0/1.702

description WAN Radio Link Two

encapsulation dot1Q 702

ip address 192.168.1.9 255.255.255.252

!

interface FastEthernet0/1.3097

description WAN Radio Link Three

encapsulation dot1Q 703

ip address 192.168.1.13 255.255.255.252

Thank you in advance

11 REPLIES 11
Reza Sharifi
Hall of Fame Expert

The performance varies by model

Have a look at this link for router performance for the 2800 series and others:

http://www.cisco.com/web/partners/downloads/765/tools/quickreference/routerperformance.pdf

If the link 100Mb line rate, you need a different router model.

HTH

My Router is a ISR 2811 and the document says on Process Switching performance is 3,000 PPS and 1.5Mbps and on the Fas/CEF Switching it is it is 120,000 PPS and 61.44Mbps. Can you explain what does this mean in relation to the 802.11Q subinterface that Im going to create. The other 2 radio link is just connecting at 1Mbps.

Let me know

Leo Laohoo
VIP Community Legend

The other 2 radio link is just connecting at 1Mbps.

Radio?  I hope you're not talking about 802.11 a/b/g/n wireless.

Am not sure what technology our carriers are using but they are giving us 1Mbps link to 3 of our remote sites. The 100Mbps link is using 802.11 a/b/g/n wireless and it is just a point to point about 4KM in distance. By the way my plan is to have all these radio links terminated on a L2 switch then to the Cisco 2811 router

Attach herewith is my plan for the setup

Leo Laohoo
VIP Community Legend

Are you going to driving any voice or video applications to and from these remote sites?

Eventually, voice and video

Leo Laohoo
VIP Community Legend

Eventually, voice and video

Not on a 1 Mbps link you won't.

I guess will bump that up to 2Mbps. Got QoS also configured on the interface as well. But my question is what is the speed of the subinterface that has been created and encapsulated with dot1q ??

Leo Laohoo
VIP Community Legend

But my question is what is the speed of the subinterface that has been created and encapsulated with dot1q ?

Without any packet shapping?  Full speed.

Without any packet shapping. Yes. Anyway, I havealready got this setup so we can close thos now

Sorry, minus the 100m link. Just confirm with our carrier that its not 1M, its 2M links