1801 router performance

[ATtheincredibleaf]

So I use my 1801 to route between vlans set up on a TP-Link gigabit switch (router on a stick topology).

The only NATting I use on the router is out to the Internet.

Connected to the switch is a VMware ESXi host that has virtual machines on two subnets.

I find that file transfers between virtual machines based on different subnets can be as low as around 10 MB/sec.

This makes sense as the 1801 only has 100Base-T ports running at 100 Mb/s.

If I use a layer 3 gigabit switch to do the inter vlan routing such as a Cisco SG300-10, will I get transfer rates closer to what gigabit LAN can normally provide?

[paolo bevilacqua · Accepted solution]

That is normal. The 1801 was designed to be used as ADSL router for the speeds that were normal many years ago, not for inter-vlan routing.

For that, use a layer 3 switch.

[ATtheincredibleaf]

Hey Paolo,

Thanks for the quick response.

Do you know if the SG300-10 layer 3 switch can do inter vlan routing as although it has a CLI, it doesn't run IOS.

From reading the document link below, it sounds like I'll need a Catalyst switch.  Is this right?

How To Configure InterVLAN Routing on Layer 3 Switches

[paolo bevilacqua]

About that, please ask in "small business switches".

thank you for the nice rating and good luck!      

[ATtheincredibleaf]

Thanks again.

[Srinivas N]

Hi,

Cisco 1801 will support Intervlan also.

By enabling dot 1Q, you can creat a multiple sub interface and for those sub interface you can give your ip address

like below

Router0

Router(config)#int fastEthernet 0/0

Router(config-if)#exit

Router(config)#int fastEthernet 0/0.10

Router(config-subif)#encapsulation dot1Q 10

Router(config-subif)#ip address 10.1.1.1 255.255.255.0

Router(config-subif)#no shutdown

Router(config-subif)#exit

Router(config)#int fastEthernet 0/0.20

Router(config-subif)#encapsulation dot1Q 20

Router(config-subif)#ip address 20.1.1.1 255.255.255.0

Router(config-subif)#no shutdown

Router(config-subif)#exit

--------------------------------------------------

Thanks & Regards,
Srinivas. N.

[paolo bevilacqua]

Cisco 1801 will support Intervlan also.
By enabling dot 1Q, you can creat a multiple sub interface and for those sub interface you can give your ip address
like below

Please note that the 1801 does not have enough performances for inter-vlan routing, the very reason why the OP has posted this thread..