Just One VLAN Not Being Forwarded?
Aug 30, 2012
I attached a really ugly picture of how the switches are connected. Basically, we have 4 VLANs in the company. Everything works fine on all VLANs, except the management VLAN (ID 1 - yeah, also the default VLAN ID, I know it's bad and it's going to change some day but...one step at a time). All the switches have their management interface on VLAN1.Here's what works and what doesn't work:If I connect my PC, on VLAN1, to switch number 5 (or any other one on the same row with it) or 4, I can ping 5 (and the entire row), 4 and 3. I cannot however ping 1 and 2If I connect my PC on VLAN1 to switch number 3 I can only ping 1,2 and 3.So basically from what I can gather, switch number 3 (D-Link) is not forwarding VLAN frames containing the tag 1 from and towards the trunk between it and switch number 4 (Cisco).What is strange is that this only happens on VLAN1, everything works perfectly on the others. And it stopped working when we installed the D-Link, we didn't have any problems when instead of the D-Link we had a 48-port netgear switch.
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Jul 2, 2011
I Get a mail From Someone which claims which says that they are forwarding a mail from someone How do i find out that the mail i have received s from that original person onlyBecause that person is not replying to me directlyHe forwards mail to a second person{assume} and that person forward me the mail::how do i find out that the mail i have got is really originated from that first person only
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Oct 25, 2011
I have my 2Wire AT&T U-Verse router properly set up to forward the port 25565 from my machine. (Incidentally, PortForward.com gives me a blank page when I try to look up how to do this.) However, when I test the port is indeed open ( Open Port Check Tool - Test Port Forwarding on Your Router ), it returns as closed. Yes, I'm running the server software while I run the test. I only have the Windows Firewall, but I ran attempts while the firewall was completely disabled as well as with just the appropriate programs allowed.
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Jan 6, 2013
I am trying to create a server in a game called Minecraft. I have forwarded port 25565 (which I put in the server settings for incoming connections and I checked that 10 times so that is ok) on my thomson TG787. I've opened the same port on my firewall in windows 7. I've disabled my firewall completely. But it's still blocked. It's simply doesn't work..I'm 100% I fixed it on the router.
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May 24, 2012
someone at work sent me an e-mail they claim was forwarded. I don't think it was, and I need to know before I ask, because accusing someone of making it look forwarded, I viewed the source code, but I can't tell, it was sent through a microsoft exchange server.I think they copied and pasted and changed dates, is there anyway to tell from the source code?
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Jan 23, 2011
I am trying to create a server in a game called Minecraft. I have forwarded port 25565 (which I put in the server settings for incoming connections and I checked that 10 times so that is ok) on my netgear wnd3700. I've opened the same port on my firewall in windows 7. I've disabled my firewall completely. Everything should be cool, but still, checking with canyouseeme.org and asking friends to join. It is still blocked. It simply doesn't work.. I checked my router for any firewall but couldnt see any.. So yeah I'm 100% I fixed it on the router, unless someone is gonna tell me that there is still an option in the router that might fix it.. but I think I did something wrong in the firewall..Although I have been trying to get this to work all day.. I'd rather get some advice on the firewall or other options in my router. Btw, I am using AVG free edition, and I am pretty sure there is no firewall in that version, but there might be something I have to disable in order for this to work ?
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Jul 20, 2012
i'm trying to use VNC as a remote desktop i was told to forward port 5900 in order to connect. but whatever i do i still an error saying that the port is not forwarded..Connection test failed.VNC Server appears to be behind a NAT router with IP address x.x.x.x. You will need to configure that router to forward port 5900 to this computer before you can connect to VNC Server over the Internet.as you can see here the port is forwarded to the server computers local IP.i have no firewalls active, and no anti-virus software that could be blocking VNC.
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Aug 11, 2011
What am I missing - can't get my new SG 200-08 Switch to handle Jumbo Frames
I have set the MTU size to 9216, saved the conf. and rebooted the box - however when I try to "ping -f -l 8000 xxx.xxx.xxx.xxx" through it (or to the switch itself) I recieve only "Request timed out"!?
I have tried MTU=9000 as well.....
F/W: 1.0.1.0
Is there anything, apart from increasing the MTU size, that needs to be done?
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Feb 6, 2012
I have a western digital USB 2tb drive. It works great on my intranet (my laptops and other devices can access it). I have a sticky Ip address and would like to be able to access my drive from my work, but I don't know how to set up or if it can be set up to work. Can the USB be port forwarded? I have the E3200 router, Windows 7 OS (if needed)
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May 8, 2013
I have a webserver running and have port80 open to recieve requests. Every once in awhile the router randomly disables this port from being forwarded. It is only this port none of the other ports I have open are disabled. I tried switching the server to another port but had the same problem.I have assume its some kind of security feature, since the server gets many requrests that it shuts down the port?
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Apr 6, 2012
i have been trying to forward port 25565 for a server on a game called minecraft. I have a bt homehub 2 and i have followed everything on portforward.com and on several videos and still no luck. I have B.T net protect plus so I don't know if the firewall is blocking the port
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Dec 9, 2012
I have been using Linksys routers for quite some time now, and recently made a big upgrade from the WRT54G to the E3000. I am familiar with the 192.168.1.1 interface and its functionality. However, I recently noticed a problem: when I set a port to forward traffic to any IP address on my network and then check whether or not it is actually open (url...), I am told that the port is still closed. More interestingly still, the first port that I forwarded when I first got the router is listed as open, but the other half dozen or so are still considered closed. I have been trying to set up a file transfer protocol (FTP) server, but can't even get traffic to forward from port 21! I even tried using the pre-configured FTP drop down on the Applications & Gaming tab, but to no avail. Has anyone had similar issues, or perhaps an idea as to why only one port is forwarded when I have followed the same steps that I have been using for years?
I tried to get in touch with Technical Support about this issue, but was told that I needed to purchase a $30 subscription in order to qualify for assistance. I don't think that I should have to pay $30 to know why the same steps work with some ports but not with others.
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May 3, 2013
I have a domain name which I register to my WAN address so I can do service hosting from my home network. I recently switched out my WRT54G running DDWRT with an EA2700. I set up my port forwards and static dhcp assignments and they are working from outside my network, but when I try any network operation involving my WAN address from my LAN machines, the connections just timeout.
I read in some posts that "you cannot do this" and "you have to test from a remote internet machine". Well, this WORKED with DDWRT, so it's not like it's impossible to make a router that does this. Why can't I do this with the EA2700? Is there some magic setting that will let this work??
The whole point of using a domain name is that I can access my services ANYWHERE using the convenient "name" thing.. genius, right? Except when I bring my laptop home and suddenly my domain goes non-responsive.
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Sep 15, 2011
We have a pair of CSS 11501,Currently it is using source ip for load balancing and 5 servers as backend , however we have users loggin in using http and based on its source IP (ISP PROXY) , it is forwarded to SERVER A.However, we have a SSL page and when the client switches over to SSL , it is forwarded to SERVER B/C/D/E based on its source IP ( REAL CLIENT IP) .This will cause the user to be terminated as the 5 servers are independent and not running in a cluster.
Is there any way that we can use the X-Forwarded-For address to load balance so that when users loging , they are sent to SERVER A (Based on X-Forwarded-For Header IP which translate to REAL CLIENT IP).This way we are able to also send it back to the same server when it uses SSL.I believe that we should be able to load balance using X-Forwarded-For IP or to rewrite the X-Forwarded-For IP into client source IP.
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Aug 11, 2011
We have an ASA Version 8.0(5)19 as our firewall.We are trying an cloud service on the internet and found that the ASA is removing the X-Forwarded-For on the header on the surf traffic.Is it possible to not remove the X-Forwarded-For in ASA?
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Sep 26, 2011
i have an ASA 5520 8.4(1) with following config
interface GigabitEthernet0/0
nameif WAN
security-level 0
ip address 216.52.185.33 255.255.255.240 standby 216.52.185.34
!
i need traffic (port 9350) from DMZ and WAN forwarded to object Production_23 port 3389, how do i achieve this ?
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Sep 26, 2012
I have a client with a cisco 1841 router with a static public ip. He has 3 dvr's he wanted to acces from the internet and we opened the ports for the dvr's ip's. The issue were having is that only the first ip that we opened shows the port opened and works ok, the other 2 ip with their ports show closed.
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May 9, 2011
I just got the game Brink an i am unable to play multiplayer due to some ports that need to be forwarded. I have a WNDR3700 net gear router an i know how to get into it an get to the port forward options i know all the information to enter except the last box it asks for a server IP adress?
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Nov 18, 2011
I have a linksys E3000 and a WD My Book World Edition 2. (WDMBWE2)What i want is to access my WD from any where. I have tried setting up a simple single port forward to the WDMBWE2, which worked great. I was able to view all my files from anywhere.however, i wasn't prompted for any login.so basically anyone could access and modify all my data.I have obviously deactivated this again.
I have already tried setting up user accounts on my WDMBWE2 to try and solve this, but that only creates the problem of my TV and music player not being able to access it anymore(they both cant type in login information).Is there any way to make the E3000 prompt me a for login/password when requesting that port?
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Nov 4, 2011
Why is loop-back only working on ports forwarded in the Virtual Server section and not Port Forwarding or even DMZ? I have seen a post about loop-back on the DIR-655 from a while ago that had said to disable SPI and change NAT Endpoint to independent, I have done this and loop-back still doesn't work.
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Nov 30, 2009
I have two Catalyst 6506 in VSS mode with VS-S720-10G running 12.2(33)SXI1 IP SERVICES.I have two firewalls that communicate on to the other through a dedicated VLAN created on Catalyst 6506.
One firewall is able to ping the other one on this dedicated VLAN but if I send multicast traffic from firewall-1 I didn't receive it on firewall-2.I found a bug related to multicast issues on Cisco WS-C6509-E with VS-S720-10G. The bug ID is CSCtc59038.
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Feb 22, 2013
Version 12.2(33)SXI
int vlan 1
description client vlan
ip vrf forwarding A
ip address 10.1.1.1 255.255.255.0
standby 129 ip 10.1.1.2
standby 129 timers 1 4
standby 129 priority 105
standby 129 preempt
ip helper-address 10.1.2.20
[code]....
dhcp requests are not making it to the dhcp server SAME VRF (ip helper-addres is not doing anything.....)extended vrf traceroutes on udp 67 sourced from vlan2 are fine
I am expecting udp unicast packets on port 67 "giaddr" relay packets on the DHCP server generated and sourced by the relay on Vlan1
eg. Mar 1 01:59:06.731: DHCPD: setting giaddr to 10.1.1.1
This exact setup works in our preprod environment with the same code.Only difference is we run Distributed etherchannel on the 6500's where this doesnt work.
Wireshark on the client I can see the requests being sent Going to check it with debug ip dhcp server to check the relay logs out of production hours.
I have seen so many people say it IS and ISN'T supported on this version of the code.e.g. [URL]
I am aware the helper-adddress should inherit the vrf of the interface ip helper-address vrf command is not supported.The fact it works in the PP environment.... could this be due to the Distributed EtherChanel difference? or just some bug....
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Mar 22, 2012
I've been looking into IGMP snooping and have read that a L2 switch will forward multicast traffic to all ports connected to an interested receiver AND all mrouter ports. In a L2 'V' topology this results in all multicast traffic routed onto a VLAN being forwarded to the 2nd distribution switch. My question is how should a 6500 Sup720 deal with this unwanted multicast traffic? Both a Local SPAN of the RP and a Netdr capture suggest that this traffic is punted to the RP and ultimately dropped. Is this expected behavior or should the traffic be dropped in H/W?
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May 12, 2011
We are trying to config vlan 10 for data and vlan 20 for voice on the same port - port 1 of swtich SF300-24P to run both data and voice on different vlans.Do I have to add vlan 10 as an untagged vlan to port 1 and add vlan 20 as an tagged vlan to port 1?If I do not want to assign the native vlan 1 to port 1, how can I remove it ? The GUI page - assign VLAN to port does not allow to remove it.Aslo, what mode shall I set up on port 1? General, trunk or access ?
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Jan 12, 2013
How do I submit an RFE (Request For Enhancement) to the Cisco SBR team to encourage them to implement the missing support for VLAN to VLAN firewall rules that was available in the RVS4000 (See [URL]) and that was supposedly added to a beta release of the RV220W firmware (See [URL])?
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Jan 10, 2012
Between our hosting and a customer we have an extended vlan, traveling on a fiber, between two cisco 3560 switches.The thing is, that we want to create one or more vlans inside that extended vlan, in some way if possible?
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Jan 10, 2013
I have two networks at two sites with a dot1q trunk between the two L3 switches at both sites (no routers involved)
SITE A - Cisco 3750 L3 - VLAN ID 50
10.10.50.0/24
SITE B - Cisco 3750 L3 - VLAN ID 50
10.20.50.0/24
I would like to extend the SITE A VLAN to SITE B so that I can move hosts from SITE A to SITE B without needing to change their IP address but the vlan ID is already in use. Obviously the easy solution is to change the VLAN ID for one or other of the sites but both sites contain hosts that run 24/7. Is there a way to join two VLANs with different IDs together.So for example I create a new VLAN 60 at SITE B and associate it with VLAN 50 at SITE A.
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Aug 12, 2012
We have 6509 VSS with FWSM Module and we have created two context on it, one is INTERNALL CONTEXT othe is EXTERNALL Context? We have spanned various VLANS in switches and FWSM context level. All VLAN Gateways are configured in context level.
Activity description : We had planned migration of these devices into a new Datacenter, it was a planned activity. During migration of devices from one Dc to a new DC we broke the VSS and kept the primary running and removed the secondary switch and migrated this secondary to new DC and powered this device ON in the new DC and checked all the config was very much fine but this device was OFF network as secondary was brought to new DC just to limit the downtime during the primary switch movement.
During the activity ( Primary switch movement )We powered off the Primary switch and mean time before shifting into new Data center We had brought up secondary switch which was already existing in the DC was put live in the network and it was working fine without any issues.
Later we had moved Primary into new data center and tried to put into VSS with the secondary , during this period the secondary device into went into RECOVERY MODE and primary device was not responding and devices went off network and immediatly we removed the VSL link and brought up primary into production network without secondary online in the network ( Without VSS just stand alone switch ) network started working, but bringing up the primary we found that some of the VLANS in the FWSM was deleted and some VLAN had misconfiguration ( example : say original VLAN ip 10.200.112.1 has become 10.300.13.1 ) also some of the access list as well as SVI was deleted making configuration mismatch.
Wanted to know while syncronization b/n primary and secondary switch in VSS if we pull out VSL link would create this type of issues.
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Feb 2, 2011
I have set up 2 DHCP pools and 2 VLANs (1 *the native* for data / 1 VLAN for voice). When I use the command "switchport voice vlan 20" the port disapear from the show vlan brief list. When I use the "switchport access vlan 20" it shows up in the show vlan brief in the correct VLAN and gives the phone an IP. I assume that using the access instead of the voice is wrong and the phones would not configure correctly. But when I use the access the phone goes to the next step and tells me the TFTP files are not found. Why does the port disapear from the VLAN list?
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Jan 20, 2011
I have a Netgear GSM7248R switch with 5 different Vlans including th management Vlan. Each of the vlans are connected to my layer 3 switch for routing. I want to access the management vlan form any of my Vlans so my layer two switch can be detected by my snmp manager.
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Mar 31, 2013
i need to solves this little problem on 2960S lan BASE but i dont know if it is possible.
Uplink port config for gi 1/0/28 is:
switchport mode trunk
switchport trunk alloved vlan 10,11
but on interface gi 1/0/1 i want to have data from vlan 10 tagged as VLAN 20.
At this time i have solved this issue very primitively
I have set up gi 1/0/2 as int mode acces, acces vlan 20 and i have connected gi 1/0/2 with gi 1/0/3 with eth cable. int gi 1/0/3 is switchpor mode acces, switchport acces vlan 10
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Sep 16, 2012
I have a 3750G switch in my production network that only has VLAN 1 on it. All ports are in a default state and VLAN 1 is disabled. The switch is passing traffic but shouldn't having the default VLAN shut down cause the ports not to pass traffic? If I start to create VLANs will that cause the switch to stop passing traffic?
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Oct 12, 2011
I'm wanting to setup a Virtual Office scenario. Everything is working fine except for 802.1x...I can get the 881 to authenticate things connected to it, but I don't have the options of guest-vlan or auth-fail vlan.Idea is if the users takes the router home and someone, either accidentally or on pupose, connects an unauthorized Laptop, they stay off the Corp network but can get to the internet still.I found this link on Cisco's site: [URL]That link shows them configuring a guest vlan right on the fa0-3 ports of an 881W. I dont have that option on mine. I can only configure 802.1x on the vlan interface. I have 802.1x working, for things that connect to vlan1, but I would like to have a "fallback" setup.
EZVPN_Remote(config-if)#int fa1
EZVPN_Remote(config-if)#dot
EZVPN_Remote(config-if)#dot1?
dot1q
EZVPN_Remote(config-if)#dot1
[code]....
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