What Is Maximum Number Of End-to-end Propagation Delays
May 2, 2011
When using CSMA/CD what is the maximum number of end-to-end propagation delays that could elapse from the time a sender starts its transmission until:the collision is detected? the frame it is sending has a collision?
I have a BT Home Hub 3 and quite often get messages "cannot connect to network". I have many (>20) devices connected. Have I reached the limit? With four kids in the house the pressure to connect even more devices is growing.
I tried to add some more MACs to our Controllers through the WCS. I hate mac-filtering. We plan on stopping sometime. Three of the Controllers(4402s) are reporting that we have reached the max which appears to be 506.First, is there anyway to increase this number?Second, if not, any experience with deleting clients? Should I use reporting to find MACs that haven't been used for sometime and delete them? Is there a better way?
I know this sounds a simple and easy question, but I can't find the answer anywhere - so here it is :-I need to know the maximum number of vpn tunnels that a Cisco 881 can handle.(In context, we have a group of users, who work from home and this office, so their laptops have the cisco vpn client, I need to know how many of these vpn connections the 881 can handle at once before it dies a death.)Hote - I have read somewhere a line that state maximum number of users is 20 but think this was in reference to some VOIP service.
Is there a cisco best practice on the maximum number of NAT statements on a Cisco ASA? We have a 5520 and a coworker is adding static NAT policies so a vendor can monitor around 1,029 nodes. The problem is each node inside is a 10.X.X.X and to keep the IPs from overlapping with other customers the vendor monitors they would like us to NAT to a 172.16.X.X scheme.
We are having random issues of users not being able to connect to our wireless network consistently. The users will have successfully accessed the network previously but then will have difficulty associating to the network. After a period of time, the association appears successful again. My first thoughts were that there was a restriction on the number of clients that could associate to a given AP at any one time.This is the equipment we have:1x Cisco Wireless Control Server (WCS) 6.0.181.04x Cisco 5508 Wireless LAN Controllers 6.0.196.060x Aironet 1142N Lightweight Access Points (LAP) Is there a hard or recommended maximum number of clients per LAP? If so, where is this defined? From what I have read on these forums, Cisco apparently recommends about 25 clients per AP but I can not find any official documentation to support this.When I go to WCS Home > General > Top APs by Client Count, the top AP reports 20 clients. However, if I click on the AP Name and go to the Current Associated Clients tab, it is only listing 8 clients - why is this?
How many routed ethernet ports do they support when using HWIC-1FE and HWIC-2FE modules? On the Cisco site for the two interface modules and in the corrseponding PDF of supported interfaces for 29xx routers a maximum number of 2 2port modules(HWIC-2FE) and 2 1port modules(HWIC-2FE) is written.Does this mean, that I can put in 4 L3 HWIC modules into one Cisco 2921 router by combining these two HWIC modules resulting in a total number of 7 interfaces for this router?
What are the maximum number of AE2500 wireless adapters can be installed on a PC running Windows XP SP3 using the windows wireless zero configuration? Recently I'm working on a program that needs multiple seperate wireless connections on a Windows XP SP3 PC. Each wireless adaptor is given a static IP address to respond to traffic at some specific ports. I can install four AE2500 adaptors without problem, but it disconnects the first AE2500 device when I plug in the fifth AE2500 adapter. I've tried on different windows XP machines. They all get the same problem. I wonder if it is a limitation in the AE2500 driver.BTW I've also tried to install an Valet AM10 adaptor as the fifth adapter, it seems ok. Yet installing more AM10 adapters beyond the fifth (4 AE2500 + 1 AM10) requires some luck. It may disconnect the other AM10 devices when I plug in another AM10 adapter.
Is there a maximum number of licenses for connections to a 877?The reason I ask is that our routers are managed by a datacentre and when I asked for the login details I was told that I couldnt have them due to licensing reasons with no other explanation.
I have a few sites using the RV042 with wireless access points and some of them have over 50 devices.In reviewing the documentation (specifically,[URL]), I came across this:Enable DHCP server: Check the box to allow the router to dynamically assign IP addresses to up to 50 connected devices. Uncheck the box if you have another DHCP server on the network or you want to configure static IP addresses for your network devices.Is this accurate? Or will the RV042 allow more than 50 devices?
Is there a limit to the number of ssid's that can be supported in h-reap mode? I need to deploy at least 4 but the documentation does not necessarily say. I'm deploying these ssid's on a 7500 controller.
I need to know the maximum number of MAC addresses that can be entered in to the MAC security filter list on the AP541N.I know it has a maximum number of 200 concurrent users, however the documentation does not specifiy whether this also applies to the MAC filter.
I have used wireless acces points in the past that allow hundreds of users but only allow 64 MAC addresses, so this is very important.
what is the maximum number of etherchannels i can build on a Cisco 2960S stack. We hoping to connected 15 servers using 2 port channels between two stacked 2960 for redunancey. So what is the max number of channels can i build using the 2960S? Is the max 6 or is it more?
Background: currently have a WRT320N, thinking of upgrading to an EA4500 assuming ONE feature has been improved: Port Forwarding.
Scenario: Currently I have a WRT320N router, and while it "does everything we need" it has one limitation that is now getting in the way: limitation on number of forwardable ports. In the port forwarding panel, it has 15 total rows: the first five rows can be enabled for specificaly named services (SMTP, FTP, etc). The last 10 rows are fully customizable in that we can set the name, ports and protocol.
The problem is that of the 13 total ports I currently need to forward, only ONE of them is listed in that fixed list. So, sadly, I can only use one of those first five rows. I've now filled the remaining ten custom rows, and still have need for two additional ports (for now, may need more down the road).
Trying to get creative, I figured maybe I could just spill over to the Port Range Forwarding page and add a row or two there. The only problem: it's buggy. I've found that if the Single Port Forwarding list is filled, then the Port Forwarding Range entries don't work properly. For example, if I wanted ports 12345 and 12346 forwarded to 192.168.1.5, they work fine with two single port forwarding entries. However, if I delete those, add two other port lines I need forwarded (the single list being full again), and add a port forwarding range 12345..12346, they don't work properly, ports just are closed. Only the singles work, the ranges don't.
Question: Has the EA4500 resolved this issue and allow for either more lines (i.e. 20 customizable entries instead of 10), or, better, does it just have an [Add Entry] button to allow for additional rows to be created? In today's day and age, where one single device (such as an Xbox) can take four rows, a 10-row limit is pretty sparse. Comparing it to some competitors, for example the D-Link DIR-825 (aging, but still great) allows you to add as many as you want.
I realize "expensive" firewalls like SonicWall's have virtually unlimited customization, but I don't need many of the additional features and don't want to spend $350 on a "high-end" firewall to solve the problem of needing two more ports open.
I have a question regarding to the maximmum number of active SSID's on a WLC 5500 with 3500i, it's my understanding that the 3500i can support 16 active SSID's is it the same when connected to the WLC? Also, if possible would the WLC shutdown un-used Radios or maybe after hours?
I have a FWSM cluster that I exceeded the maximum number of static nat entries on. i migrated the connectivity off to a pair of PIX 535's that seem to be handling the adderess translation needs. however the number of NAT entries being required is increasing and being the PIX series wal EOL'd several years back..I need to replace them.. The static 1-1 nat entries cannot be summarized into network as the hosts that are being nat'd are scattered all over various micro subnets in the all 3 rfc1918 ipv4 address ranges and they are being manged directly by snmp and SNMP-trap and other services that prohibit the use of many-to-one nat. Is there a mknown maximum number of static 1-1 nat entries that can be defined on the ASA 5515-x, 5525=x and higher ASA firewalls? Say I wanted to be able to grow to 2500 or more static 1-1 nat entries. I am currently running 2010 1-1 static host nats currently.
What are the maximum number of real servers, server farms and virtual servers i can configure on ACE30 module,Is there any documentation available on cisco site where i can check this? Does it depend on the hardware or does it depend on the software version?
What is the maximum allowed number of wired clients behind a workgroup bridge? In other words, is there a limit on MAC addresses?I assume 1262 AP in WGB mode is connecting to a lighweight AP (1262 or 3502), latest IOS and WLC software. I wasn't able to find the answer from Cisco documentation.
I administer a wired SOHO network at a business I own, which is nothing more than a XP Pro machine which doubles as a file server. Typically, there are only 3 or 4 work stations in use at any given time, with 3 printers being shared. Backups are done after hours through portable USB. I have a home quality Netgear router behind a cable modem, and unfortunately need to use two 8-port unmanaged switches due to limited cabling between the workstations and the server. Said switches/cabling could prove to be the culprit, except that it used to work nicely.
A few months ago, while browsing the shared folders where the bulk of the approximately 180 Gigs worth of largely graphics files...(browsing from ANY of the terminals)...I began to be aware of random delays of up to 30 seconds or more. It seemed to be a sudden change, but has grown worse over time.
The files in question typically reside under several subdirectories, ie My Network Places/GID/Designs/Stan/Photoshop Files/TeeShirts... and browsing to the actual goodies progresses nicely until the VERY LAST directory, then WHAMMO.....XP flashlight goes back and forth, back and forth, back and forth.....you might wait half a minute before seeing the actual filenames in the window.
Its exasperating, and can randomly happen even if I'm the only person in the building, and the "server" seemingly has nothing else required of it.
Replaced my DLink 655 (had stopped working) with the E4200. Every time I enter a new url, there is a 10 second delay while the 'sending request' message is showing at the bottom of the browser. When the website is connected, there is another 'waiting for xxx' delay for several seconds.I am on a Mac system (laptop and desktop).This never happened with the The delay occurs with wireless or with wired access. Happens with Chrome, Firefox, and Safari. Does not happen if I plug the desktop directly into my cable modem. I have Optimum Boost which is the fastest ISP in the area (possibly the country).I emptied the cache thinking it is DNS problem, works for a few minutes and then back to the same routine. I've tried every setting I know.
What's the use of paying for the fastest internet access and (supposedly) the fastest router if I have to wait 15 seconds each time I visit a website. Frustrating thing is that this sometimes, not always, even happens when I am going back to a page I just visited (back button on the browser).This has to be router issue since it does not happen when my laptop or desktop is plugged directly into the modem. This does not happen to me at work either. It does not happen when I use Cablevision's wireless network in Nassau county.
Cisco device is neighbored up with a Brocade device via OSPF, and the desired routes are present.This Brocade device is neighbored up with another Brocade device via OSPF over a GRE tunnel. I am not seeing the desired routes present.What kinds of things can I look at to determine the issue? I think I've viewed the OSPF topology database (I'm not that familiar with Brocade) with the show ip ospf routes command and I'm not seeing the desired routes there either.There is no form of route filtering in place. I'll double check, but I do not believe there is any stub routing going on either.