Cisco WAN :: ASA5510 VRF-Lite Two Customers Same Subnet
Apr 6, 2012
We want to deploy a NMS (Network Monitoring System), in this case SolarWinds, to monitor devices we have deployed at the customer site. We will make an IP VPN connection (ASA5510 with Cisco 800's) to the customer site. We have one primary NMS installation running in our datacenter. This NMS has to have a connection to all customer sites. We run into a problem when two customers use the same subnet. We want to use VRF-Lite to solve this problem but I am stuck in my design.
I have attached "VRF.jpg" to show the (basic) design I have made. The connection from customer to the router in the datacenter is not a problem. We can put the fa0.1 and vpn interface in the same VRF group. Via one physical cable we will go from router to NMS in which the NMS has multiple virtual interfaces. The datacenter router will route between the 192.168.x.x (NMS) and 10.1.1.x (Customer).What I can't seem to comprehend is how the NMS can decide how to get to Customer 1 or Customer 2. The customer can reach the NMS one-way but the NMS has no way to reply back because if it replies to 10.1.1.1 it can either use interface fa0.1 or interface fa0.2.
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Jul 6, 2011
Is it possible to have the same subnet on all of the endpoints of a hub and spoke VPN tunnel? I have to create 18 ASA5505 tunnels back to one ASA5510. Instead of having 18 subnets out there it sounds more efficient for my application just to have one. Sort of a CLOUD (there's that word) arraignment.
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Feb 14, 2013
This question is in the context of servers sitting in a colocation environment behind an ASA5510 with security plus license.Our colo provider is going to be statically routing a /28 public subnet to our ASA5510 (say 1.1.1.0/28). We will also be getting a single IP (say 2.2.2.2/30) on a small router-to-router subnet (2.2.2.0/30) to which the 1.1.1.0/28 subnet will be statically routed to our ASA5510 from our colo provider.I will obviously set the outside interface of the ASA to be 2.2.2.2/30 so that the colo provider can route the 1.1.1.0/28 subnet to it. I will also set a default route to 2.2.2.1 which is the IP of our colo providers gateway (and the router that will be statically routing the 1.1.1.0/28 subnet to us).
We have various servers in the same rack as the ASA (connected via a 3750G switch). Some of these servers need to be exposed to the internet (web, email, etc servers) and some do not (database servers).I'm considering 2 different ways of designing the network but I have questions about both and not sure which way to go:
1) Scenario #1: Using NAT and private IP's for all servers.In this scenario where/how do I assign the internal network (say 10.1.1.0/24) and the public routed subnet (1.1.1.0/28)? I assume the internal 10.1.1.0/24 is an inside network assigned to the interface connected to the 3750G (to which all the servers connect). However, where do I assign the public routed subnet (1.1.1.0/28) since it is somewhat "nebulous" in that it has to reside somewhere on the ASA so that it can then NAT to the internal (10.1.1.0/24) IP's. Also, is it considered an outside or inside network - and on which interface? My confusion is that If its added to the outside interface then won't that conflict with the 2.2.2.2 IP to which the colo provider is routing our 1.1.1.0/28 subnet to? And if its on the inside interface connected to the 3750G then wont that conflict with the 10.1.1.0/24 private IP range of the servers?
2) Scenario #2: Using public IP's for all servers:This scenario seems more straightforward to me: I would want to assign IP's from the statically routed subnet (1.1.1.0/28) to my servers so that range would be configured as an inside network on the interface connected to the 3750G (to which all the servers connect). This would be configured on a specific VLAN (say vlan 50). I would then have another VLAN (say VLAN 100) on the 3750G that has a private IP range (say 10.1.1.0/24) so that non-public servers (database, etc) would reside on there. All public servers that need access to private servers would have a NIC on both VLANS (50 + 100). My question is is this the correct way of approaching this? I also like this because I dont have to worry about NAT and the ASA can act as a router/firewall and things are clear in terms of whats happening.
Ultimately I'm not sure which is the best way to go in terms of having all servers on a private IP range and just NAT to them (as per scenario 1), or implement scenario 2 where servers have two interfaces.The main thing thats bugging me from scenario 1 is I'm not sure where/how to assign the statically routed subnet (1.1.1.0/28) on the ASA? (inside? outside? which interface?).
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Aug 7, 2011
I am using an ASA5510 for internal firewalling in my QA environment. How do I allow RDP from one subnet to those protected by the firewall? Preferably using the ASDM.
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Apr 30, 2012
How to make Nas Box accessible by his customers so that they can upload large files to it rather than rely on posting these to him (e.g. on CDs/DVDs).He has the Nas Box for his own use and ideally would like to link it through his business website so that a customer can go there and upload files. Another option seems to be opening the network to his customers as well but I'm not sure about how to approach either of these options.
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Nov 13, 2012
We have a 5525 that has not been deployed to production yet so we're using it in the lab. I want to lab some upgrades from 8.2 to 8.6 for some customers but the 5525 comes loaded with 8.6. Would there be any problem with reimaging the 5525 with 8.2? I'm just not sure if there would be an issue with this new hardware running that old software.
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Aug 22, 2011
I do alot with computers themselves, but, my networking skills are rusty and lacking....so, I'm hoping this is a simple one!I have a customer with a medium sized network (about 20 desktop computers) that are setup with a Domain.The business is a car dealership and he wants to be able to offer wireless to the folks that are waiting (but not give them access to the network, printers, server).I've never setup a wireless network where access to only the internet and not the network itself is the goal, so I'm not sure how to do it properly.Is there an easy way to explain how I should be hooking it up? Or will the network information, type of router, etc. be necessary?
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Jun 5, 2011
We're trying to access Citrix applications on customer`s server, but the error message attached pops up every time I try to access any application. Actually, this is the same error message when we try to use ssh protocol. I'm pretty sure I have loaded all the plugins for this. All the other functionalists are ok for this equipment.
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Jul 20, 2011
I can't receive mails from some customers, asa 5505 log get the message: "ASA_Outside|Deny TCP (no connection) from X.X.X.X/35702 to ASA_Outside/25 flags ACK on interface outside".
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May 15, 2012
I have a Cisco 7606 running 12.2. I want to limit the interface that is used by one of our customers to 30M.
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Mar 31, 2013
Can Cisco 3945E support VRF-Lite ?
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Feb 14, 2011
Imagine organization has about 300 partners. Currently data center has 100 Cisco 1800 routers to accept P2P connections for each partner.
Now organization proposal is:
- Use MPLS and use an extranet network. Advertise a certain unique route to each partner..
- Grant unique VPN ID for each partner and VRF Lite at the data center. Then bring each partner with separate tagged VLAN to the data center via MPLS.
Can VRF Lite scale to more than 300+ partners OK?
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Jan 22, 2012
Using the VRF- Lite functionality on Cisco 3750G's (WS-C3750G-24T-S), I've got a situation currently with a set of 3750's running inter- v LAN routing for around 80/90 connected sub nets (140+ gig ports). I'm looking in the coming week at creating a new VRF and enabling OSPF for that VRF while leaving the existing routing arrangements in the Default IP Routing Table.
I'm in a situation where I can't replicate the live config into a lab to test the impact / implications of enabling / creating VRF's. I know the 3750's have a very small support for VRF's (24 if I recall) but I only plan on using 2 or 3 max currently.
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Aug 3, 2012
What I am trying to do is I have one switch with say a 10.1.9.1 sub-net I need to have one of the ports to be trucked with two vlans one for DSL and the other for a local connection with the sub-net of 10.1.5.1 both of the sub-nets are configured in the core as 9 and 5 so I have port 0 set up as a trunk and it is set up as ge-0/0/0.0 vlan_5, vlan_192 on the 10.1.9.1 subnet switch. The DSL is working but the local is not pulling a 10.1.5.1 IP and has no connectivity. Everything looks as if it is configured correctly but still the DSl is working but not the Local connection.
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Apr 2, 2012
How do I tell if my cisco 2960 has the Lan Base or Lan Lite image?
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Nov 17, 2011
I'm having a rather bizarre and highly annoying problem with static NAT on an ME6524. I've created a virtual router (VRF CORPNET) which has one physical L3 interface, one SVI and one Loop back.This Virtual router has the sole purpose of Na Ting our internet-addressable IP addresses to another set of addresses on our Corporate WAN.
There are two NAT rules - a single 1-1 Static NAT, and an overload NAT for everything else, which uses the Loop back address. The 1-1 Static NAT is used to NAT our VPN ASA, which is used to establish a Site-Site VPN to one of our counterparts on the Corporate WAN. This works fine most of the time, however once or twice a day, the NAT just stops working, our Site-site VPN drops, and traffic is being seen on our counterpart's firewall with source address UN-NATed (They see 200.200.200.1, when they should see 30.30.30.65). When we go onto the 6524 and do a show ip Nat translations we get the following (200.200.200.1 is our VPN ASA - 200.200.200.10 is just user traffic):
ZR-BDG1-6524#sh ip Nat translations
Pro Inside global Inside local Outside local Outside global
udp 30.30.30.65:500 200.200.200.1:500 30.30.40.4:500 30.30.40.4:500
udp 30.30.30.65:500 200.200.200.1:500 30.30.40.4:500 30.30.40.4:500
[code].....
As you can see, for some reason we have multiple identical PAT entries for port 500. While this is the case, traffic from our VPN ASA is crossing the box without being Na Ted. If I issue a clear ip Nat trans * then the situation is immediately resolved, and the VPN reconnects without issue.
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May 4, 2012
I am trying to “build up” a small home-network and using some of following Cisco equipment’s
ASA 5505 v8.4.3 witch base licenseCisco Catalyst 3750G with ipservices version 15.0.xand 1 qty of AP1142N I am not able to get internet access from any VRF’s.
From "MILAN (LAN) VRF, I am able to ping my gw: 10.45.45.1 but I am not able to ping for example: “linknett VRF”.
It seems that i am missing some NAT rules on ASA or ?
If i connect my laptop directly to the ASA, i am able to get internet access!
I am not feeling comfortable with a new ASA 8.4 code yet, so im not so sure which exact code's i am missing on ASA ...
attached digram including configuration files from ASA and 3750 sw.
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Jul 1, 2012
Thinking of getting one of those 8-port 2960 for a CCNP study. Is the difference between the C2960-8TC-S and the C2960-8TC-L models in Hardware, or in IOS? or both? And if it's in IOS, is the S upgradable to L?
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Apr 11, 2013
I am trying to test (if possible) the idea of having 2 6509-E switches connected directly to each other while using VRF-lite (Sup 2T). The idea is to have 3-4 separate networks. For example Net-A, Net-B,Net-C, Net-D. There is no PE router*, just these two switches. Also, there sin't any other access layer switches. All users connect directly to the 6509-E's via switch 48 port switch blades.
Net-A and Net-B on separate VRF's, but able to talk to each other. Net-C and Net-D* on separate VRF's without being able to talk to any other. Net-D* will have a PE since it comes from an external network. This is something I would like to test in a lab environment, but I am not familiar with VRF's.
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Jun 6, 2013
we have inserted into a network with VTP a Cisco Switch 2960-S, not knowing that had installed IOS LAN lite.Now I discovered that it can handle up to 64 vlan. In the network there are currently configured 62 VLAN: what happens when we exceeded the max number (64) of VLAN for that switch?
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Sep 1, 2007
I have a 1841 with 12.4(16) IOS.In my configuration I have to interfaces for internet access, without vrf:
interface ATM0/0/0
dsl operating-mode auto
pvc 8/35
encapsulation aal5mux ppp dialer
dialer pool-member 1
[code]....
This two interfaces are in the global route table because there is no vrf indication. These are for internet access (a simple adsl connection) Then, I have this interface in VRF named "lan123"
interface FastEthernet0/1.23
encapsulation dot1Q 123
ip vrf forwarding lan123
ip address 192.168.143.254 255.255.255.0
ip nat enable
Now the issue.If I write:
ip route vrf lan123 0.0.0.0 0.0.0.0 Dialer0
this works and, with nat, internet works. The question is why this works without the "global" keyword? I'm going from the vrf named "lan123" routing table to global table without the using of "global" keyword.
If I try to use:
ip route vrf lan123 0.0.0.0 0.0.0.0 Dialer0 global
there is an error indication.
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Nov 9, 2012
Unable to access switch from outside the local network. Can get to all routers and PC's
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Feb 6, 2012
We ordered 4x cisco 2960 switch with LAN Lite software by mistake. Can we upgrade them to Lan Base?When I change boot image I get Error: hardware not supported by firmware.
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Jan 4, 2012
We are trying to setup a new configuration with 2960S as access switchs and a 4507 as a core switch.I want to protect the management IP VLAN of the swich using vrf on the 4507 so we :
SHUT VLAN 1 on every switch (2960 + 4507)
CREATE A NEW VLAN 289 (management vlan) -> IP network : 10.32.126.192/26
L3 VLAN on every switch
VLAN 289 in the VRF XXX on the 4507
create tunk between the switch and the 4507 :
switch mode trunk allowed vlan 200-230
sw trunk native vlan 289
so with this configuration on the 2960 the vlan 289 is UP/DOWN and UP/UP on the 4507 I can access to the 4507 using the IP in the VLAN 289 but i cannot access to the 2960 behind the 4507 CDP connectivity is ok?
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Feb 10, 2013
I need to buy a cheap Cisco switch with DHCP server.Can you confirm that 2960-24-S, 2960-24TC-S and 2960-48TC-S be a DHCP server?
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Jul 18, 2012
A quick one because I'm scratching my head trying to figure the difference between the 2960 LAN Base and LAN Lite IOS installs. I want to put a 2960 into a site which has as layer 2 link on dark fiber taking it elsewhere. This part I'm not concerned about - the WS-C2960--24TC will do what I need without issue - but I don't know if I can get away with LAN Lite, or if I need LAN Base.
I basically need V LAN's with associated SVI's, and a routed link on the up link port (I don't care if it's a switch port with an associated SVI or a no switch port and IP address), but it's got to be able to run OSPF. Can I do this with LAN base on this series switch? Or do I need to go for a higher series (3560?). I *could* get away with static routes, but my boss is walking death on them unless I can 100% prove they're necessary, so I'd rather not right that fight!
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Apr 4, 2013
Do I need to run any special license (like IP SERVICES) on the Cisco Catalyst 4900M in order to run VRF lite?
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Jun 20, 2012
I have some 2960 switches with Lan Lite ios in my infrastructure.And I try to configure them to support "trust device cisco-phone" and "switchport priority extend cos 0" on ports with cisco phones.But LAN Lite image does not support "mls qos trust device cisco-phone".can I use any workaround to trust cos of cisco phone and to remark PC traffic with cos 0?
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Jun 11, 2012
I have a Linksys E3200 and I need a IP address to hook up to A Nintendo DS lite. it requires a WFC and I have trouble connecting to it .
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May 15, 2013
setting up VRF-lite on redundant 6509-E chassis to account for chassis failure? Let's say I have 2x 6509-Es configured with HSRP for 2 vlans, ServerA and ServerB. So
6509-A#
!
interface Vlan10
description ServerA VLAN
ip address 10.10.10.2 255.255.255.0
ip flow ingress
standby 1 ip 10.10.10.1
standby 1 priority 105
[code].....
I now need to create an environment where the Server VLANs can be provided for two customers and they need to be wholly separate. On 6509-A, I make VRF CustomerA and VRF CustomerB and I assign Vlan10 to VRF CustomerA and Vlan20 to CustomerB. Do I create the SAME VRFs on 6509-B with the same logic?
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Jan 26, 2013
I have a 2960 SI lan lite switch that I am configuring for admin and guest access. I have wireless AP's plugged into trunked ports 2 and 3. I am using two vlan's (in addition to the native VLAN). Vlan 5 for Admin and Vlan 10 for guest access. I have ACL configured on the router preventing guest users from accessing the Admin network. I want to prevent those on the guest network from seeing other hosts in the vlan however the lan lite software does not support port ACL's. Any way to accomplish this with this switch.
version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
[Code]...
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Jun 6, 2012
ASA 5510 have two model Bun-K9 and Sec-Bun-K9 from the datasheet find out difference Port related and Redundancy. My questions is : Have any major difference for Security service between two model ?
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Mar 28, 2012
1)For 3650X I found some contradiction in the Q&A about feature set LAN Base vs IP Base:
LAN Base: Can I do static IP routing ?
LAN Base: SVI => is this for intervlan routing ?
2)For 2960, there are 2 flavors (LAN lite and LAN BASE) Q: Can I do static routing on one of these flavors ?
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