Cisco :: Routing Between Wireless And LAN Subnet
Oct 27, 2012
I have a cisco 877w and ive setup two ssids on it each with different vlans (I intend to use the zone based firewall to lock down the guest zone later)
Ive made a quick diagram of my network its a single server with 2 NIC's one for the internal lan and another for the external network (direct connection to the router) The server hosts 3 virtualized servers with the ecternal nic only shared with the tmg 2010 server.
So my problem is that when I connect to the 10.0.1.1 network as 10.0.1.2 I can only ping the internal network however the internal network is incapable of responding (pinging back) giving destination host unreachable. I know I need some kind of routing but im not sure where to apply it on the TMG server with the next hop as 10.0.0.10 or on the router.
The guest wifi is intended to bypass the network firewall and not allow access to the internal network. I've enabled ip routing on the cisco router and attached the config below.
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Oct 4, 2012
I was assigned a static block over PPPoE from the ISP. I can connect to the internet using the gateway address but I need to route the other static IPs to my servers. I might say that I accomplished it on a couple of older routers - E1200 & WRT120N, but I cannot get it to work on my new EA3500. I have 5 usable IPs plus the gateway IP that is assigned with the PPPoE connection on the WAN port.
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Mar 28, 2013
I recently installed a couple of Cisco Aironet 3600 Series Wireless Access Points at a remote site. While I was at the site everything seemed OK, The clients were able to get connected to the access points, the guest network worked fine, I could SSH into the access points, and I could ping them. The problem is when I went back to my home site I tried to SSH into the access points through an ASA IPSec VPN Tunnel and it couldn’t find it. When I try to ping the access points they “time out”. I can ping and connect all other addresses (via RDP, HTTP, etc..) on the same subnet which should rule out an access list problem. A couple of notes to be aware of:
The WAP’s have the Autonomous IOS installed (Version 15.2(2)JB) The WAP’s are connected to Dell PowerConnect 5724 (Not by choice.. We are a Cisco shop, these were already there and have plans this year to replace)
I can ping and SSH with Putty to the WAP’s from the local subnet I cannot ping or SSH from a remote subnet to the WAP’s. I can access all other IP’s and Computers from a remote subnet.
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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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Feb 12, 2012
I'm wanting to use the SRP527W (from Telstra) to route a block of assigned internet addresses (/29) over the WAN internet IP address. Is this possible on the 527W, or does it only do NAT routing?
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Nov 8, 2011
I need to route a subnet from a 7204 to 2 different gateway's which are not Cisco based. I cannot use HSRP, GLBP or VRRP as the other 2 gateways don't support theses protocols. Yet they do support OSPF, RIP, and BGP.... Take note that this setup is in a ISP scenario. How can I acheive gateway redundancy?
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May 24, 2012
Got a shiny new SG 200 26P which seems to work fine operationally.owever, when I am trying to access the web interface from a different IP subnet, the web brower just times out.If I put my PC on the same IP subnet, it works just fine. From the other subnet, I can ping the switch fine. The default gateway is set on the switch, and from the web interface I can ping and dns resolve other hosts and on the internet. I've tried to create a management profile to 'allow all from everywhere' basically, but still no luck.I'm completely stumped. I've tried to reset to firmware defaults, and I'm now runinng the latest firmware. I woudl suppose that the switch would allow itself to be managed via the web interface from all subnets by default. Any thoughts? The fact that the switch can ping internet hosts makes be believe it's own default gateway and IP are all ok and working.. (and I can ping it from anywhere in my network).
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Feb 27, 2013
I have a few questions regarding IPv6.
Question 1.
I have no idea how to route IPv6. My provider has provided me with a subnet. This subnet is for example 1:1:1::/48
The router of the provider is located at 1:1:1::1 and my router should get 1:1:1::2(Cisco router). Every subnet I want to create must be routed by 1:1:1::2, for example if I want to create 1:1:1:1111::/64 it needs to be routerd by 1:1:1::2
How do I configure this on the RV220w?
Question 2.
I have the possibility to create vlans on the RV220W. I can configure IPv4 addressen per vlan. Only for IPv6 this is not possible.How do I configure this or when will new software be released to configure this?Or do I have to edit the configuration file?
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Jul 16, 2012
Getting a lot of the following errors on our 5508 form the same subnet: 10.20.0.1 255.255.248.0 . I tried researching and not getting much.
broffu_SocketReceive: Jul 17 10:11:10.068: %DATAPLANE-3-DP_MSG: broffu_fp_dapi_cmd.c:2891 FP0.09:(7089389)[cmdAddIpv4:2921]failed to find ipv4 10.20.6.58
[code]....
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Mar 7, 2012
Two networks. NetA: IP subnetID 10.101.x.x subnet 255.255.0.0. Devices have static-assigned IP's. Only DHCP runs on wireless AP for wireless client connection. IP addressing scheme set by hardware vendor, so not under my control. NetB: IP subnet 10.x.x.x subnet 255.0.0.0. Campus LAN and also not under my control. DHCP supplied addressing. how to get NetA devices to route to NetB?I would like to be able to provide Internet access (via NetB)to NetA devices.
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Sep 25, 2012
I have to get a list of external subnet's and external IP's for several properties so that the web based time card software can restrict access.I can get external IP easy, but I don't see an easy way to get the subnet. Is the only way to do this by contacting comcast/att at for each location and check with them?
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Sep 25, 2012
I am carving up an internet Class C for customer. This class C is used by 3 distinct QA, Corporate and Production firewalls. I want to carve up IP space so there is a /26 for each environment. The issue I have is the firewalls may need communication with each other via the public IP space. Currently I don’t have any L3 switches in between the firewalls and the edge internet router. So with subnetting, it would seem I need to push everything through the internet router for the intra-firewall communication.I would rather not push this traffic through the edge router, so I came up with an idea to allocate all firewall outside interface IP’s in the 4th (last remaining) /26. That way, I can allow firewalls to communicate over the primary interface IP’s, which will all be in the same subnet – without going through a routing “engine”/device.
For the actual environment subnets (NAT's on respective firewalls), I create a static route on the edge router pointing to each of the firewall’s primary IP’s for the respective environment routes (the first 3 - /26’s).This is still a beta design, but I have done this before on small scale when ISP gave me 2 subnets for example, assuming I was going to put a router in between the customer firewall and ISP. I would use the “routed subnet” on the ASA interface, and then pull the NAT’s from the other subnet. The ISP would have to add a static route directing the NAT subnet to the “routed subnet” correct IP - which would be the firewall outside interface primary IP.I recently found out that with ASA OS 8.4.3 and up, ASA will not proxy arp for IP’s not in its local interface subnet. This means the ISP/router will have to assign static ARP entries on the edge router. This can get messy after the first few NAT entries. So I am debating the design now. I think this kind of stuff going forward won’t be worthwhile with newer ASA 8.4.3 code.
How to communicate between different ASA’s, while still carving up the Class C into usable smaller subnets? The primary reason for doing this in the first place is to support routing on the edge router. I am thinking it might be time to ask for another Class C to do the routing functions, and keep the firewalls all at Layer 2 in one /24 - Class C?
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Feb 20, 2012
I’ve configured a small WLAN for a school that wants to have wireless network access for their staff as well as for guests doing presentations. They want the staff to have access to everything on the 192.168.1.0 /24 network as well as the Internet. They want the guests to only have access to the Internet. I have attached a picture which shows how the network has been configured with 4 Cisco AP1242G AP’s attached to a Cisco SF302-08MP PoE switch and then to a Symantec Security Gateway to the Internet.
I can authenticate wirelessly to the STAFF SSID and ping anything on the 192.168.1.0 /24 network and access the Internet.I can authenticate wirelessly to the GUEST SSID and ping anything on the 172.16.1.0 /24 network, but not anything on the 192.168.1.0 /24 network (which is what we want). However, when on the GUEST network you can’t access the Internet. I added a default route to the Cisco 302-08MP switch to 192.168.1.1 (Symantec firewall) thinking that would forward the traffic from 172.16.1.0 /24 to the Symantec firewall out to the Internet, but that isn’t working.How would I go about getting the traffic from 172.16.1.0 /24 to hit the Symantec firewall and the Internet, without hitting anything else on 192.168.1.0 /24? Do I need to put the Symantec firewall in a different subnet like 192.168.2.0 /24? Am I missing anything else?I’ve worked with Extreme Networks & HP / 3Com CLI in the past, but never with Cisco and never with web based management
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Feb 9, 2012
I have Catalyst C3750G switch
with configured route to subnet 192.168.201.0/24
ip routing
ip route 192.168.201.0 255.255.255.0 192.168.160.13
192.168.160.13 is accessible
[Code].....
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Feb 14, 2012
we have some devices on the network which cannot be secured and we need to isolate from the rest of the subnet.Our switches are Cisco 2960.Is it possible to via an ACL local a specifric port down to only allow traffic from specific MAC addresses? I've had a go at this myself but not been able to make any progress. The traffic type is TCP/IP.
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Jan 14, 2013
We have two switches; a WS-C3550-48 and a WS-C3548-XL connected via fiber uplink ports. Both switches are on the same subnet 192.168.1.0 /24. I would like to change the subnet of the second switch, WS-C3548-XL, to be on 192.168.2.0 /24. Would it be possible to assign 192.168.2.x IP addresses to both uplink ports to achive this?
Or would I need to create a separate VLAN and assign both GigabitEthernet0/1 uplink ports to this VLAN?
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Feb 5, 2013
I have an issue with the device in subject. I need that some server, listed as service on CSS, can contact a content VIP on the same subnet. To allow that traffic I configured grouping on CSS (group 1) with vip address and an ACL that allow traffic from subnet 10.1.1.0/24 toward same subnet 10.1.1.0/24 and I have bound this ACL with sourcegroup 1. The nat and portmap works but never at first attempt, instead since second attempts it works. Seem like a CSS require to much time to create nat entry.
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May 4, 2011
I'm new to Cisco equipment much more familiar w/ Sonicwall w/ that said......I have a 5505 w/ Security Plus licensing
I have set up multiple VLANs as follows
VLAN 1 inside - still setup as 192.168.1.1 (will not be using this for our lan)
VLAN2 - outside
VLAN100 - LAN 10.1.1.1/24
[Code]....
If I do add all the VLANs above I understand I will probably have to make a trunk port since I only have 5 usable interfaces
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Oct 7, 2012
I have a customer who has an ASA 5505 that is handling the routing for their internal network. They are running out of available IP addresses on their subnet 192.168.1.0/24. They have dumb switches that don't suppport multiple vlans or trunking & they are only able to connect to one switchport on the ASA. He doesn't not want to purchase any new equipment or rearrange their existing equipment at this time. The customer would like to statically assign IP addesses for 192.168.1.x & 192.168.2.x and have the ASA hand out DHCP addresses for 192.168.3.x addresses. The customer suggested configuring a super subnet. A 192.168.0.0/22 address scheme would provide an ip range 192.168.0.0 - 192.168.3.255 on a single VLAN. I know this is an unconventional way to setup an internal network & I will definitely advise the customer that this should only be considered as a temporary solution until they get more appropriate network equipment.
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Sep 25, 2012
I have an issue with some traffic routing:
Machine A | Machine B (Win 2008 R2) | Machine C
Start: 192.168.5.9 > 192.168.5.5 (NIC 1) - 10.14.137.130 (NIC 2) > 10.14.137.128So the question is how do i get traffic from Machine A to Machine C. I've tried various 'Route ADD' cmds but no luck so far. So was hoping someone out there could shed some light for me?Machine B is a AD/DNS and can talk to the entire 10.14.137.x range but has no forwarders set up in DNS. And does not act as a AD/DNS server for the 10.14.137.x range. It fills these roles only for the 192.1668.5.x range.
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Mar 15, 2013
I have forgot this technology name, but, I remember it can achive on between Nexus 7000s in two location, and also between two catalyst 6500.Can I ask if it can be done between one nexus and one catalyst 6500?
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Dec 13, 2011
We have 10 ADSL lines and 5 of them goes in the load balancer (One gateway) and the rests are used as default gateways for internet access. We use ADSL routers as access points for internet, but those routers should be part of our network and should be given an address in order for them to act as default gateways for internet access. I'm facing a real prob with the ADSL routers Linksys WAG54G2 because they doesn't support a subnet mask 255.255.0.0 Any recommendation for an ADSL router model that support a netmask 255.255.0.0 ?
My cisco 2811 router interface configuration ip address: 172.20.0.1 255.255.254.0.Load balancer output lan ip address: 172.20.0.5.My ADSL routers will be in the following range : 172.20.0.6 - 172.20.0.10
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Jan 25, 2012
I recently bought SG-300 28P to create the VLAN. My network hs 3 subnet 192.168.1.0, 192.168.2.0 and 192.168.3.0.My main net work is 192.168.1.0. I want to divide it to VLAN to eliminate the boardcast storm; especially from the domain 192.168.3.0
But I want all the devices from 192.168.1.0 to access other subnet.
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Jun 28, 2012
I need to configure the C3560-24TS, QoS control by IP or subnet.i tried to study books and videos many times but still feel i am not well known about QOs...
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Nov 27, 2012
how to know if my bgp neighbour advertised my network from his side or not ???
here is my config :
Gateway7600#sh ip bgp
BGP table version is 8, local router ID is 192.168.40.3
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
[code]....
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Apr 12, 2011
Main Site allows communication from Remote Site via VPN to Windows ServerMain Site also has a secondary subnet that communicates ONLY through internet but NOT to the Windows Server.Sonicwall 192.168.168.x is main siteRemote Site is 192.168.0.x connecting to Main Site to access shared folders on serverSecondary subnet at Main Site is 192.168.0.x using Windows XP PC's. They are accessing a linux server at 192.168.0.215 which Main Site has no access to.VPN remote ip's are 192.168.0.x - they can successfully access the Windows Server at 192.168.168.100 BUT NOT 192.168.0.215.GOAL: Want to connect Remote Site to Secondary subnetWilling to make router changes or whatever is necessary to get Remote Site to access Secondary Subnet with the only exception that the Secondary Subnet REMAINS.VPN DHCP is turned off but willing to turn it on.Willing to make the Linux Server 'discoverable' on the Windows Server. Don't know linux at all but another co-worker set it up and can make changes.
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Jun 20, 2012
I am trying to modify the OSPF admin distance for a specific subnet under version 5.1(5) of the Nexus 7K, but this command does not appear to be available.
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Feb 13, 2013
I have some questions about how to configure my Cisco 1941 with a routed subnet from my ISP to forward them to 1 or more servers in my LAN.1 Routed subnet /29 from my ISP (over a fiber connection).In my LAN I have (at the moment) 3 servers, and about 15 clients.I would like to use the first ip address from the routed subnet for internet traffic from all the clients in the LAN.I would like to use the second ip address from the routed subnet for server1 so that server1 accept some allowed connections and that server1 connects to the internet with the second ip address from the routed subnet
I would like to use the thirth ip address from the routed subnet for server2 so that server2 accept some allowed connections and that server2 connects to the internet with the thirth ip address from the routed subnet.I would like to use the fourth ip address from the routed subnet for server3 so that server3 accept some allowed connections and that server3 connects to the internet with the fourth ip address from the routed subnet.[code]
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Sep 6, 2012
Have our public IP address space masked on /24 at our Internet Router. The router portion of 3845 connects to Internet, while the internal switch connects to my internal network and seeds it with the public address space. The switch had a port configured no switchport (L3) with an ip address with /24 (ie 67.63.145.1 /24) this connects to internal IPS/IDS then to Firewall which NATs to internal, then packet shaper, web filter etc etc etc. I need to test my ISP speed so I need to "break in" to the link between the switch and the IPS/IDS. I figured I could configure another port on the switch on the 3845 but my problem is the port to my network is routed and is masked on entire /24. I tried to configure a port on VLAN 1 and give myself an available address in the L3 address space and this did not work (figured it would not but gave it a try)
Any way to get two ports configured to use the same subnet while one is a L3 routed port and the other is just part of that layer 3 routed network?
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Mar 11, 2012
I have a Nexus 7K router, has 2 ospf process, ospf 1 and ospf2. OSPF1 has several subnets in 10.1.0.0/16 subnet range , OSPF2 has several subnets in 10.2.0.0/16 subnet range. I want to summary OSPF 1 subnets to 10.1.0.0/16 then redistribute to OSPF2.but OSPF 2 didn't receive 10.1.0.0/16. Below is the config
ip prefix-list all seq 10 permit 0.0.0.0/0 le 32
route-map all permit 10
match ip address prefix-list all
router ospf 1
router-id 10.10.3.9
[code]....
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May 13, 2012
I need to make some changes on our network. We currently have two sites 150 miles apart we join both by way of fiber and on each side we have Cisco 3750 stack switches, configure trunking for all V lans on one port in site one then through the the long haul fiber to site two with site one using 10.1.1.30 and site two using 10.1.1.40 as their default gateway, with static routing all V lan sub nets to the other sites default gateway life is good.
My question - seeing how we have sites using the same sub net 10.1.1.x to trunk all data to each site through switches; we need to now change the network and add each site to the MPLS network, site one switch 1 IP address 10.1.1.30 going to MPLS router one with FA0/0/0 using IP 10.1.1.31, site two having switch 1 IP address 10.1.1.40 going to MPLS router one with FA0/0/0 using 10.1.1.41. I need to know will this work.
We have the same sub net in each site 10.1.1.x to the MPLS routers then the external router interface connecting each site to local switches, will this cause any problems by using the same local sub net for each site?
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Jan 3, 2013
I've been playing around with the Cisco RV180s for a while now and have come across a problem with the subnet calculation in the static routes and routing table. Essentially, if I configure up a static route for a /16 it's entered in the routing table as a /13. If I add a /24 it's entered in the routing table as a /16. I haven't tested every subnet size and combinations but this looks like a fairly fundamental maths bug.
As a side note, I notice that the 1.0.1.9 release notes state the removal of SSH Server, however, I can not find any reference to it's existance prior to 1.0.1.9, did/does it exist in 1.0.0.30 and if so where? .
Screenshots are below and an extract from the configuration file for reference.
From the config file:
route = {}
route[1] = {}
route[1]["active"] = "1"
route[1]["dstIpAddr"] = "8.8.0.0"
route[1]["gwIpAddr"] = "192.168.1.250(code)
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Sep 28, 2011
partition the departmental IP network address block to create a staff and a student subnet. Each of these will be identified by its own network address and netmask. It is university policy that you must be economical with the IP addresses. That is, the subnets must be as small as possible, but they must be large enough to accommodate the maximum number of hosts you were given. Also, it is university policy that the respective gateway router to the outside world should always be given the highest possible host IP address in the subnet. The student subnet should have a higher IP network address than the staff subnet. The network must be able to support up to 60 machines on the staff subnet (not counting the router) and up to 120 machines on the student subnet (also not counting the router).
IP address/netmask
University network address127.158.128.0
University network mask255.255.192.0
University internet gateway IP address127.158.191.254
Department network mask255.255.254.0
Department router address127.158.129.254
Suppose that the network address of the departmental network is 127.158.128.0 (calculated by AND between Dep network mask and Dep router address)I know that 60 machines would use 6 bits for the staff subnet.the netmask of staff would be 255.255.255.192.how can I figure out the the IP network address of the staff subnet.I have worked out the range for the staff subnetwork.
127.158.128.0 - 127.158.128.63
127.158.128.1 = Gateway address
127.158.128.63 = Broadcast address
Now how can I calculate the IP network address of the staff subnet?
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