10-17-2011 08:29 PM - edited 03-07-2019 02:52 AM
Running 3750X with IP BASE. Anyways, I know I would probably need to go to IP Services but has anyone use VRF.
Ques:
1. How many VRF can I have? I assume 2
2. Anyone have sample configs as I want to run VRF in an inside cloud environment. I am new on this so detailed answer would be appreciate.
Thanks
10-17-2011 08:48 PM
Hello,
The document bellow should help configuring VRF:
Basicaly:
- Ip Services Needed indeed
- Did not find exact number supported but seems that more than to (as per document above):
The switch supports multiple VPN routing/forwarding (multi-VRF) instances in customer edge (CE) devices (multi-VRF CE) when the it is running the IP services or advanced IP services feature set. Multi-VRF CE allows a service provider to support two or more VPNs with overlapping IP addresses.
- Config samples also can be viewed by that link.
Hope this helps.
Nik
10-18-2011 04:17 PM
I do believe that the 3750X supports up to 16 vrf's.
I run a couple of 3560X's with ip services and they support 16 vrf's, think its the same for 3750X's allso.
vrf's are great and simple to configure. Basically you do the same config as you would normally do for one routing instance only you do it under a vrf instance instead
10-18-2011 07:17 PM
The maximum supported number of vrfs for the 3750 is 26.
HTH
06-10-2013 11:05 AM
where to find this numbers ..26 vrfs max .. in any documentation?
I would have the same question for the new 3850?
And a related Question would be how many OSPF processes are supported on 3750-x and 3850, that means in how many of the maximum supported vrfs we can run OSPF?
Thx
Hubert
06-10-2013 11:55 AM
Hubert,
I have tried this both on the 3750 and 3850 series and the max is 26.
output below is from a 3850
witch(config)#vrf definition 1
Switch(config-vrf)#vrf definition 2
Switch(config-vrf)#vrf definition 3
Switch(config-vrf)#vrf definition 4
Switch(config-vrf)#vrf definition 5
Switch(config-vrf)#vrf definition 6
Switch(config-vrf)#vrf definition 7
Switch(config-vrf)#vrf definition 8
Switch(config-vrf)#vrf definition 9
Switch(config-vrf)#vrf definition 10
Switch(config-vrf)#vrf definition 11
Switch(config-vrf)#vrf definition 12
Switch(config-vrf)#vrf definition 13
Switch(config-vrf)#vrf definition 14
Switch(config-vrf)#vrf definition 15
Switch(config-vrf)#vrf definition 16
Switch(config-vrf)#vrf definition 17
Switch(config-vrf)#vrf definition 18
Switch(config-vrf)#vrf definition 19
Switch(config-vrf)#vrf definition 20
Switch(config-vrf)#vrf definition 21
Switch(config-vrf)#vrf definition 22
Switch(config-vrf)#vrf definition 23
Switch(config-vrf)#vrf definition 24
Switch(config-vrf)#vrf definition 25
Switch(config-vrf)#vrf definition 26
Switch(config-vrf)#vrf definition 27
% Max VRF limit (27) reached !!!
% VRF 27 configuration failed
HTH
06-10-2013 12:03 PM
In my expierience if it is possible to configure it , it is not sure that its officially supported, :-)
Do you also have an idea about the maximum numbers of OSPF-processes?
thx
Hubert
06-10-2013 12:17 PM
For OSPF, the max is 30 on a 3850.
06-10-2013 12:53 PM
Thx where to find this number in the Documentaion?
I think it also depends on how many neighbors in every process, how many routers in the area(s) of every process, and of course the sum of router ( for this they published the numbers on max ipv4 routes)
thx
Hubert
09-01-2014 03:37 PM
Hello Reza,
Can you tell me if you try to create this vrf in a switch 3750 or 3750x?....Because the question is about 3750x.
Thanks.
01-21-2014 07:48 AM
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps5023/prod_qas09186a00801b0971.html
Q. How many VRF instances does the Cisco Catalyst 3750 Series support?
A. The Cisco Catalyst 3750 Series supports 1 global routing table and up to 26 VRF tables.
06-25-2014 03:00 AM
What would be the count fo BGP sessions on the 3850 ?
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide