Cisco :: Subnet Broadcast Addresses?
Oct 8, 2012Why do we need them? Could we leave the LAN with a subnet broadcast packet (for instance with an address of 192.168.1.255 /24). Are those addresses used for something?
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Cisco Switching/Routing :: SG-300 VLAN And Multiple Subnet Domain Broadcast
Jan 25, 2012I 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.
Router DHCP Handing Out IP Addresses Not On The Same Subnet?
Dec 22, 2011I have a Belkin model F9K1102 router supplying WAN/LAN connection to three PCs and 2 laptops. Two of the PCs are hardwired with the remainder PC and laptops are wireless. I'm using the default router IP of 192.168.2.1 and my ISP is Charter Cable (if that's of significance). The router is picking up all the dynamic IP information from my ISP and internal DHCP is enabled. Here's the issue though - when I connect a PC, laptop or iTouch (wired or wireless) with obtain IP settings automatically enabled the IP address it receives an IP address on a different subnet ie, 192.168.3.x and thus won't have WAN/LAN connection. I have tried to set the router IP to 192.168.3.1 and set the scope in the .3 subnet but the IP obtained by the device is .4! This makes no sense to me at all. The router is on the latest firmware (according to Belkin) and there doesn't seem to be any other update I can find. I have also tried another Belkin router (older model: F5D8236) and it does the same thing.
I'm not sure if this is related but I upgraded my service with Charter to a 18MB connection and a D3.0 Ubee cable modem - this issue seem to have began after this upgrade but I don't see how that would have any bearing on what is happening on my LAN IP scope and Charter tech support is pretty useless. My workaround is that I've static assigned an IP for each device in the same subnet as the router but it would be nice for the DHCP to function correctly.
Cisco Switching/Routing :: 5505 Running Out Of Available IP Addresses On Subnet
Oct 7, 2012I 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.
View 3 Replies View RelatedCisco Routers :: RV042 When Updating / Adding Mac Addresses / Table Is Always Sorted By IP Addresses
Oct 8, 2012In setup for old RV042 (V1), when updating / adding Mac addresses, the table is always sorted by IP addresses. But in the new oneRV042 (V3) I have, even with latest firmware 4.2.1.02 the list is random, thereby increasing the chance of user entering DUPLICATE IP addr with diff Mac addr. That will result in conflict.If the firmware sorts the DHCP entries by ip addresses, user would be able to catch duplicate ip errors even if the system does not flag the errors. All Cisco smart engineers can you all get the dhcp entries SORT by ip addresses.
View 2 Replies View RelatedAdding A Subnet To A Switch On Different Subnet?
Aug 3, 2012What 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.
View 2 Replies View RelatedCisco :: Learning Mac Address From Broadcast?
Mar 14, 2013Trying to find out if a switch learns a mac address of a connected device which only sends broadcasts to the switch port (no unicasts). For example one type of attendance terminal...
View 14 Replies View RelatedCisco Wireless :: LAP1041N - How Does AP Broadcast
Jun 27, 2012I have an AP, model AIR-LAP1041N-A-K9. How does the AP work? How does the AP broadcast?. Is It a circle and the AP is the center? Does the AP broadcast more front than back? Have any blind spot? I see the datasheet [URL] -
Integrated Antenna
#• 2.4 GHz, gain 4.0 dBi, horizontal beam width 360°
Broadcast A Mail To Hosts In LAN?
Apr 14, 2013I know that 255.255.255.255 is the broadcast address to send message to all hosts that are in LAN. what i want here is, i want to send a mail to all hosts using this address.
View 9 Replies View RelatedUnusual Broadcast On A Single PC?
May 28, 2012Is it normal for a pc to send broadcast to ip address that don't really exist? I am using wireshark to sniff my company's network activity and im seeing something like this.who has 192.168.2.102 tell 192.168.2.235
who has 192.168.2.103 tell 192.168.2.235
who has 192.168.2.104 tell 192.168.2.235
who has 192.168.2.105 tell 192.168.2.235
who has 192.168.2.106 tell 192.168.2.235
but ip address 192.168.2.102 - 192.168.2.106 are currently not being in use..
Can N And G Be Broadcast At Same Time From A N Router
Jul 5, 2011I'm trying to get a wireless N-router and a N-adapter for a room outside the range of a G router. But their are two laptops at the house. They both use g adapters. Can the N router broadcast both N and G signal at the same time? So all adapters in the house can connect to the router. Does broadcasting both signals degree the range of the N broadcast making the an additional N adapter useless?
View 4 Replies View RelatedRouter Won't Broadcast Unless Reset
May 16, 2011My router has been having major problems lately [Well, for a while now]. Before, it would make all my machines [1 PC, 2 Laptops] disconnect from the internet briefly and reconnect. This doesn't impact browsing, video watching, etc. It wouldn't even say I was disconnected. However, I know it was disconnecting because programs like AIM, MSN, and multiple video games would say I lost connection. For example, MSN would disconnect and take me out of any conversations and reconnect a second later. Friends tell me that I keep going offline and then online.
I read somewhere I should change my channel, so I did and still got the same problem. Furthermore, my router/pc are literally right next to each other. Then I read elsewhere I should do a factory reset on my router by holding the reset button for a while. So I did and it reset. It started broadcasting as an unsecured network, so I was going to secure it.
1. Log in via http://192.168.0.1 (default "username: Admin and no pass")
2. Go to setup tab ----> internet ----> internet connection wizard2.1 CHANGE PASSWORD ! click next 2.2 chose time zone (you know where you are) 2.3 Configure your Internet Connection DHCP Connection (Dynamic IP Address)Choose this if your Internet connection automatically provides you with an IP Address. Most Cable Modems use this type of connection. 2.4. press "clone your computer's MAC address" ; hostname: 'your computer name in ubuntu' ( mine is "grobar" yours is ..... )
3. Go to setup tab ----> wireless settings ----> Wireless Network Setup Wizard (after this we're gonna do manual settings)
3.1 give your network a name= SSID (e.g. 'grobar')
3.2.Automatically assign a network key (Recommended) and chose WAP or WAP2
3.3 Write down the network key!!! Or do printscr and save this page.
4. Go to setup tab ----> wireless settings ---->Manual Wireless Network Setup 4.1 Wireless Network SettingsEnable Wireless : ALWAYS Wireless Network Name : (Also called the SSID) the name you gave in 3.1 802.11 Mode : chose "mixed 802.11n,g and b" Enable Auto Channel Scan : YES Wireless Channel : AUTO Transmission Rate : BEST (Mbit/s) Channel Width : AUTO 20/40 MHz Visibility Status : !!!Invisible!!! (so that no outsiders know your SSID except you) So after I finish the Internet Connection Wizard [Setting up Password etc], the http://192.168.0.1/ page asks me to click "Connect" so it can reboot the router with the settings. When I do so, the router turns off with the power icon being orange. After about 15 seconds or so, the broadcasting icon, power icon, and PC1 icon all turn green. However, there is a globe icon on it as well and that is ORANGE.
Regardless of power cycling, redoing the process, etc. it stays orange. None of my machines can connect to it. The only way I can connect again to the router is if I do a reset again (By holding the reset button). But then, I am unsecured and live in an apartment. I would like to add that the above process is the one I did previously and it worked fine. But then I had to reset the router and a similar problem occurred but I managed to fix it somehow and the first problem I talked about started happening (Reconnecting and disconnecting). Furthermore, when I go to "Connect to a Network" one of the old SSIDs I created for the router is still there regardless of the router status (Offline, Not connected, etc). I am typing this by connecting my PC directly to my modem. Router Information: D-Link DIR-615 300N
UDP Broadcast Not Responding My Commands
Aug 30, 2012I am having issues recieving UDP response from my smart lighting control, i can here it in the same town but not from overseas..internal ip address 192.168.0.3 port 6000 it hears my commands from overseas i just cant here its response.
View 3 Replies View RelatedHow To Broadcast My Cable On Wifi To Tv
Mar 31, 2012I am considering a toshiba tv with wifi. i want to limit the cables up the wall and would like to broadcast my cable to my tv by wifi
View 2 Replies View RelatedWireless Router Won't Broadcast?
Aug 12, 2011my wireless router isn't broadcasting. It has the normal internet up but the wireless isn't allowing us to connect at all.
View 1 Replies View RelatedD-link Wireless Does Not Broadcast?
Sep 29, 2011My D-Link DIR-655 most of the time does not broadcast wireless signal. I use Windows 7 and XP with same result. I see at least a dozen of broadcasting wireless signal in my network. Even after it worked, then next time I power-on PC, the signal is not there. The Router does not show the status light for wireless usage for these non-broadcasting time. It works and does not work.
View 2 Replies View RelatedD-Link DIR-825 :: Getting Broadcast IP To Work At 192.168.0.255?
Apr 25, 2012I have an DLINK-dir 815 router.. I have tried for 10 hours to get broadcast IP to work, no luck.. All html/javascript modifications.
The WOL works on LAN, but not over internet, so I figure it's the broadcast IP that needs to be virtual servered
D-Link DIR-825 :: Can't Get To Broadcast Over 54mpbs
Dec 2, 2010I have my DIR-825 (type B, .202NA FW) all set up and wireless is working well, EXCEPT for the fact that inSSIDer consistently shows it broadcasting at only 54mbps, while it also shows several of my neighbors in the 150 and 300 ranges. I'm using a DWA 160 adapter in my notebook.
I have my 2.4 channel set for g&n, and my 5.0 channel at N only. both WPA2 and AES. WMM enabled. I've tried any number of combinations but nothing seems to work.
If I was content with 54mbps, I'd have stuck with my old G router.
Cisco :: Block Virus By Broadcast Storm?
Oct 27, 2011To prevent virus to spread throughout the network ports or switches, can i used broadcast storm to control? sometime, network may encountered loop, or some virus spread?
interface gi0/1-24
storm-control broadcast level ?
storm-control multicast level ?
storm-control unicast level ?
storm-control action shutdown
What will be recommended level? or the threshold / pps ?I read through cisco website, and understand, however, just never apply before, what is the recommended level for ?in my network, we do have network ports connected to media server, just sharing video, song, etc for testing purpose, however not using PIM, but it work.
Cisco :: OSPF Link ID As Broadcast Address?
Sep 24, 2012I have an AS-external route being redistributed into OSPF from a static route on one of my routers. I recently changed the static route from a /24 to a /26 and all of a sudden the link ID of the segment in the OSPF database went from the network address to the broadcast address: Code:
View 5 Replies View RelatedCisco :: 4404 - Disable Broadcast SSID From Some APs
Feb 13, 2012I have WLC 4404 Controller with 180 LWAPP. i want to disable Broadcast SSID from some specified APs not all. is it possible to do that with 4404 WLC controller.
View 9 Replies View RelatedCisco Switching/Routing :: ASR 1002 And Udp Broadcast
May 16, 2013Since a upgrade in IOS XE 3.0.9, our ASR 1002 have a problem with the DHCPDISCOVER.
View 1 Replies View RelatedCisco Firewall :: Broadcast Forwarding On ASA5510
May 8, 2012Situation: On a Customer Site we have a Cisco ASA5510 in routed mode, and we have 2 networks which are both routed fine. The Customer has one device+ on lets say Network1 and a device2 on Network2.
Problem: Device1 now needs to communicate with Device2. To initiate the communication Device1 sends out a broadcast to find other devices. How can we tell the asa to just take that broadcast from that specific device1 and "route" it through Netzwork2. Is there any chance to get this working?
Cisco Wireless :: Broadcast Forwarding On WLC-4402-50-K9?
Sep 6, 2009I have problems to connect a MAC-Server from the wireless-network (WLC-4402-50-K9, Version 5.1.163). The wired clients doesn't have problems to connect to the MAC-Server. The connection works over broadcasts. The wireless-network don't forward this broadcasts. The broadcast-forwarding feature is activated. It is no problem to the MAC-server from the wireless-clients. The hole network is in the same IP-network (one broadcast-domain).
View 1 Replies View RelatedHow A Device Knows To Slow Down Broadcast Of Traffic
Feb 4, 2012how a device (PC or router, in this example) knows to slow down broadcast of traffic.Say my cable modem from my ISP is coded to only allow 50mbps.My internal network supports the normal 100mbps.How does my router know to not send my cable modem more than 50mbps of data (because anything above, I assume after the cable modems RAM fills, will be dropped).I know TCP/IP has "Autonegotiation" which determines link type, but it's only based around if t's 1000/100/10 ethernet. No custom speed variable, such as 50mbps in this case.Say I put my network uploading data maximum stress to my internet connection, at 100mbps. Will my cable modem ever send some special packet telling me router that's too much or something?I suppose if I knew this, I could also understand how when I upload a file to another computer on my network, it does it at the full 100mbps, but over the internet, limited to my upload speed; but how does my computer or router know to slow down because my ISP doesn't allow 100mbps up? It has to be able to detect link speed somehow, otherwise just constantly sending 100mbps up will result in tons of lost data at my router/cable modem, and give the computer a frequently false sense of upload speed.
View 1 Replies View RelatedAmbicon WL300N-AR Router AP And Broadcast
Feb 26, 2012They currently have three Ambicon WL300N-ARs in their network. They are set up as AP and everything has been running fine till we tried to put a security DVR/camera behind each router. The first one worked without any issues but once we connected the second DVR to the network became unusable, very slow. Someone told the IT guy that it was probably a broadcast storm. I don't know anything about the ambicon routers, but if the wireless is setup as a AP would it forward broadcast? I was under the impression that routers did not forward broadcast. or by setting it up as a AP it no longer performs as a router? The three Ambicons are connected to a unmanaged fiber switch, I asked for a make and model but he didn't know. Also connected to the fiber switch is another unmanaged netgear switch.
View 1 Replies View RelatedCisco :: 4400 WLC Random Drop In Both Multicast And Broadcast On 7.0.220
May 15, 2013We have a Cisco 4400 WLC running version 7.0.220.0 and are experiencing clients randomly dropping both broadcast and multicast at the same time. This is not specific to one area of the site and the duration of the MC/Brodacast loss varies. These comms outages don’t happen on all the clients at once but usually affect one client at a time. After a few minutes or a few hours, the client will start receiving the multicast without user intervention.
The site has Cisco 1522 AP's that have rather interesting logs where the DTLS sends fatal errors, followed by CAPWAP going into discovery state. Not sure if this has the same affect or if that's a completely seperate issue.I was told it could be the GTK but I don't believe 7.0.220 has this feature even enabled. The clients are Cisco 3230 and Cisco 1310's. The clients are running version 12.4(25d)JA1 while the 3230 router is running version 12.4(24)T7. What supporting logs or configs need to be shared to better troubleshoot. This has been going on for quite some time and is frustrating the end user as multicast is essential to the operation.
Cisco Switching/Routing :: 2821 Forwarding Udp Broadcast
Jul 31, 2012I have 2821 router configured with two subinterfaces. This router is connected on cisco 2960 switch. The trunk on 2960 is configured without any prunning of vlans. I noticed that udp broadcast traffic is being forwarded through my router on native vlan 1 (this interaface do not have ip address configured). Below is configuration:
Router:
interface GigabitEthernet0/0
no ip address
duplex auto
[Code]....
Cisco WAN :: 224.0.0.10 / EIGRP Deny In Local Lan Broadcast Network?
Jul 26, 2011I have three eigrp configured routers A, B , C in a single broad cast LAN.I want to deny router A eigrp peering with router B, need to retain A peering with C. A router:no neighbor <B router lan ip> under router eigrp will work ?or how can i deny using the multicase ip address 224.0.0.10 usinng access lis an din which direction i need to apply.
View 4 Replies View RelatedCisco WAN :: Looping / Broadcast Storm - Running TSP On 3750
Jul 17, 2011We have 3750 and 4510 switches and in both we run Q-n-Q but we observed looping/Broadcast Storm we already run TSP on 3750 end and this is corporate branch but 4510 its difference branch where we run q-n-q technology.
View 1 Replies View RelatedCisco Switching/Routing :: 891W ISR / Can't Get SSID To Broadcast
May 27, 2012I'm working with some 891W's that have the internal 800-series AP. I have this router set up initially using Cisco Config Express, then, using Cisco Config Professional 2.5 I set up the firewall and other featuress that CCE doesn't do. Overall this is a very simple router, meant to be a small business Internet gateway device but is currently in my lab.
The intended WLAN setup is very simple. One SSID, with broadcast enabled, using WPA2-Personal. Auth: open Encryption is both TKIP and AES-CCM.
However no matter what I do I cannot get thhis thing to broadcast . In the past I had sometimes run into issues where if I had more than one AP running independently it would cause a channel conflict and one or both would cancel each other's radio, so I disabled all other AP's in my vicinity.
Also I've had issues in the past where f I enabled both TKIP and AES, sometimes clients can't find the AP as a result. My solution had been to disable one of them leaving just the other - no change here however.
Via the IOS, ssid config shows mbssid guest-mode which I believce is default.
Interestingly, if I do the following:
ap# Config t
ap(config)# dot11 ssid <myssid>
ap(config - ssid)#guest-mode
end
I end up with both "guest-mode" and "mbssid guest-mode" in the sh run for the AP, and voila, my AP broadcasts the SSID. However clients end up joining without any security at all, no prompts for pre-shared key or anything.
Cisco Routers :: SG500-28 Broadcast Message Across VLan
Feb 4, 2013Some background information of my current configuration.
VLAN 100
-Computer A
interface gi1/1/1
[Code]....
From computer A, i had run command prompt and ping 192.168.2.100(computer B) and successfully get a response. I had repeated the step but ping to a broadcast address (192.168.255.255) and it was unsuccessful.
Cisco Routers :: VLANs On SRP527w - Broadcast Traffic
Sep 22, 2011I require a system that will support 3 VLANs, the VLANs are purely for containment of broadcast traffic and needs to support inter-VLAN communication between client devices. Would the following configuration work:
Port based VLAN on the SRP527W with each port connected to layer 2 switches serving each VLAN.
DHCP server on the SRP527W assigning IP addresses for each of the V LANS in different ranges. (eg 10.10.1.xx, 10.10.2.xx, 10.10.3.xx). Would there be any benefit upgrading the Router to a SRP547W?