Bandwidth between Routers

I am being told that between cisco routers if there is only one user they only can take up to 50% of the bandwidth, not 100%....and when a second user comes on they could take the other 50%...and then they get bumped down as more users come on line....is this corret? If it is why can't the first user take all 100% and then get bumped down as a second user comes on line. I am trying to find the documentation on this so I can understand it better. I am told this is only for Cisco routers.
Thanks,
Mike

By default there is no limitation on a users use of bandwidth.
A user can use 100% of a line and if a second user comes along the traffic is not in any way split 50-50. It will depend on lots of factors as to how the split is done.
Cisco does have something called fair-queue on slower lines but this just make interactive traffic a little more preferred but does not have a lot of effect on the bandwidth each user gets.

Similar Messages

Share bandwidth between two subinterface

dears
I have 2 subinterface (f0/1.100 & f0/1.101)
and i have 10 Mb BW
how to share bandwidth between two subinterface ???

How do you want to share the bandwidth?
What device and IOS version?

100 Mbps bandwidth between 2 location over Ethernet which router model is suitable?

Hi,
We want use 100 Mbps bandwidth between 2 location over Ethernet which router model is suitable?
Sanjay Nalawade.

Hello Sanjay,
I'm afraid the question is too generic to be addressed in a forum post, since the answer may depend on several variables.
My suggestion is to contact your Cisco Account Manager and ask for the assistance of a System Engineer who can make a project for your needs.
Regards,
Antonio

Need to know how to calculate and allocate the server side bandwidth between two exchange sites for DAG replication

Hi All,
Please have a look in to the below mentioned environment.
primary site :SITE 1
server 1
server 2
secondary site :SITE 2
server 3
Note : All the above three servers are in single DAG .All the database are mounted on the server (server 1) which is located in the primary site (I.E SITE 1).
On that 5 databases we are having 3500 users .Based on the user designation we have allocated the mailbox size.
Query : Each and every day we are having the large no copy queue length for all the five databases to the server located in SITE 2.
Please help me out on this and also tell me is there any tool available to exactly get the required bandwidth for the exchange servers located between the active directory sites.
Thanks & Regards S.Nithyanandham

I don't know of any tool that can calculate things for you but latency is the biggest thing you have to worry about. The other issues is looking at the network gear between the 2 sites. I have seen many times were switches get maxed out if they are set to
1 GB or even ports getting maxed out and need to bonded for more throughput. Test your latency from the edge of each site then test it within to see if there is a difference.
Regardless of their geographic location relative to other DAG members, each member of the DAG must have round trip network latency no greater than 500 milliseconds between each other member.
As the round trip latency between two Mailbox servers hosting copies of a database increases, the potential for replication not being up to date also increases. Regardless of the latency of the solution, customers should validate that the networks between
all DAG members is capable of satisfying the data protection and availability goals of the deployment. Configurations with higher latency values may require special tuning of DAG, replication, and network parameters, such as increasing the number of databases
or decreasing the number of mailboxes per database, to achieve the desired goals.
Round trip latency requirements may not be the most stringent network bandwidth and latency requirement for a multi-datacenter configuration. You must evaluate the total network load, which
includes client access, Active Directory, transport, continuous replication, and other application traffic, to determine the necessary network requirements for your environment.
http://technet.microsoft.com/en-us/library/dd638104(v=exchg.150).aspx
DJ Grijalva | MCITP: EMA 2007/2010 SPA 2010 | www.persistentcerebro.com

Bandwidth between server and client

HI
What is the minimum bandwidth can be allocated between server and client?

Hi,
Your question has no standard answer. The minimum bandwidth is variable to each specific system. It depends on many other factors too.
Thanks,
Gordon

ASR ZBFW Config sync between routers?

I have been reading about, and will try to set up, Firewall Stateful Interchassis Redundancy for my edge ASR-1002-X routers. I have found the Config guide for that feature here and one of the prereqs is "The active device and the standby device must have the same Cisco IOS XE Zone-Based Firewall configuration," which makes sense.
What I can't find is how to keep the ZBFW config "in sync" between the routers.
I am assuming there is an automated way to do this, a la the ASA failover pair configuration sync process (a loose example, I grant), but I cannot find how to automate the sync. I am hoping this can be done for ONLY the ZBFW config, as the routers have different BGP configs, etc.
If there is not, does anyone know what happens while one is making changes to the ZBFW config on one or the other routers? Does this break the state sync?
Thanks for any help.
Paul

Hello Karien,
Not sure I get the question..
The definition you are looking I guess is this one:
A router can only inspect inter-VRF traffic if traffic must enter or leave a VRF through an interface to cross to a different VRF. If traffic is routed directly to another VRF, there is no physical interface where a firewall policy can inspect traffic, so the router is unable to apply inspection.
Based on that I would say that on each VRF there will need to be a dedicated security zone applied,
I will try to run a lab real quick tomorrow and get back to u,
Remember to rate all of the helpful posts. That's as important as a Thanks.
Julio Carvajal Segura

Q: Best Method for TCL scripts to pass info between routers?

I want to have routers tell each other how busy their links are. Whats the best method to pass information between TCL scripts running on different routers?
Thanks!
Tim

Likely the easiest approach is to use SNMP traps from one router to another. See https://supportforums.cisco.com/message/3713232#3713232 for an example.

E4200/E3200 in bridge mode...Guest access works, but does not roam between routers...any ideas?

I have installed wireless in my church...main router is E4200 in the office set up as follows:
IP: 192.168.0.1
Subnet: 255.255.255.0
DHCP enabled (Range = 192.168.0.4-192.168.0.103)
Guest network enabled
Static DNS (for content filtering)
NAT: Enabled
Second router E3200 (in bridge mode) - connected LAN to WAN
IP: 192.168.0.2
Subnet: 255.255.255.0
Guest Network enabled
DHCP (obviously disabled)
Static DNS (for content filtering)
NAT: Enabled
Third router E3200 (in bridge mode) - Connected LAN to WAN
IP 192.168.0.3
Subnet: 255.255.255.0
Guest network enabled
DHCP (obviously disabled)
Static DNS (for content filtering)
NAT: Enabled
The 2 routers in Bridge mode are connected to a 16-port unmanaged switch (with other PCs, etc.), which is then plugged into the main router in Port 1.
SSIDs on all 3 routers are exactly the same for both main and Guest networks.
The main network works flawlessly. The router in the office hands out IPs in the 192.168.0.XX range and you can wander throughout the church and maintain a persistent Internet connection. File and print access works fine too from anywhere in the building.
For the Guest network, you can set up a laptop next to each router, obtain an IP address, reach the logon page and surf the Internet without issue. So, the Guest Network works fine from each router.
However, if you wander around the church while on the Guest network (such as with a smart phone), the following happens:
-On either of the E3200 routers (in bridge mode) you get the login page as you wander into the range of each router. I would have thought that if you logged in once, you would be good to go.
-You get a different IP from each router. On the E3200's in Bridge mode, you get a 192.168.33.XX address. Additionally, the gateway is 192.168.33.1. On the E4200 (main router) you get a 192.168.3.XX IP and a gateway of 192.168.3.1.
-As a result of getting different IPs, the smart phone becomes confused and generally won't connect to the Internet.
So, it looks like each router maintains a separate list of who has entered the correct password to get onto the Guest network. Additionally, it appears as if each of the 2 routers, supposedly in Bridge mode, is still handing out IP addresses on the Guest Network, rather than deferring to the router in the office like they do for the main network.
I have seen a lot of postings about how to put routers into Bridge mode and problems with the Guest Network, but posts that I've seen point to the Guest network not working at all, as opposed to this issue where it works; the bridged routers, though, continue to like to hand out IP addresses on it, making wandering around the church while connected to the Internet not possible while connected to the Guest network.
Anyone else experience as similar situation? Any possible solutions out there?
Thanks!
-Gil
Solved!
Go to Solution.

I do understand what you were trying to do here since you would like to have only 2 SSIDs (main & guest) for perhaps easy connectivity. The reason why you were not having problems getting online wirelessly when you were connected to the main network it’s because the computer was connected to only one DHCP server since the 2 bridge routers were just acting as a switch or a passthrough device. Now with guest network access it is a different scenario, a guest network is a virtual network meaning to say it’s like your having another router embedded on your router. Since it is a virtual network, then it does not follow the parameters of the main network, hence even if the router was set to bridge mode those routers will still have their own ip address of either 192.168.33.1 or 192.168.3.1.

H323 redundancy between routers

I have 2 2800 series routers with E1 circuits on both, i can place calls on both gateways without any issues. If i pull the E1 circuit on one router, but still have IP connectivity to it from the callmanager, the route list route group will not forward outing calls to the second gateway. I'm wondering if this level of redundancy is going to work with H323. By the way if i loose ip conectivity with the first gateway the route list route group does force the outbond calls to the next H323 gateway and all works fine. Any help would be good.
dave white

Hi, why don't you use MGCP instead H.323? it's the best way to have redundancy.
http://www.cisco.com/en/US/tech/tk1077/technologies_configuration_example09186a00801ad22f.shtml

How to even out bandwidth between 2 FMS?

Hello all. I have two servers, both with FMS, and both with 1Gbps dedicated connections. Sometimes the total traffic goes above 1gbps due to the large amount of viewers, while the second server is underused, so I'd like to know if there's anyway I can even out connections (using one upstream only to a server) so that I have, for instance, 1000 viewers in one server and 1000 viewers in the other, evening out the bandwith used among them. Thank you. I believe this falls into load balancing, although I have not much knowledge in such.

user10721329 wrote:
How to find out difference between IAS Oracle Home patches and 10.1.2 Oracle Home patches.
I have read me document but i could not able to understand.
Please help meWhat docoument you are referring to?
If you source the application env file APPS<CONTEXT_NAME>.env file under $APPL_TOP directory then this will set ORACLE_HOME to 10.1.2
If you source the application env file <CONTEXT_NAME>.env file under $INST_TOP/ora/10.1.3 directory then this will set ORACLE_HOME to 10.1.3
Environment Settings
http://docs.oracle.com/cd/E18727_01/doc.121/e12841/T120505T120509.htm#F_92659x3Ax20H1x20Head1x3Ax20Environmentx20Settings
Thanks,
Hussein

Networking and limiting others bandwidth between my iMac and other PC's,

Hello!
Ok, here's the setup:
One iMac (mine!), three Xbox 360's (that need some bandwidth priority) and two PC's.
We have a really low internet connection, and everything connects wirelessly to our Belkin router.
One of our housemates is (sorry to sound awful) rather unaware that every time he uses YouTube on the PC, ALL THREE Xbox's will get kicked offline (mid game,) as we're a house of four major gamers, he usually denies he was on YouTube as he knows full well we get kicked if he tries to use the site (or similar high info site).
So, I wish to use my Mac, and sorry if this is impossible, but I want to set priorities for the 360's, so that we don't get kicked off. It sounds mean however he's home alot, watching youtube, whilst we have one dedicated gaming day that he's always interrupting.
Can I set up some form of priority/monitoring system through the router and iMac?
I watch too much 24.
Camilla.

Unless your Belkin router supports bandwidth limiting for clients (unlikely on a consumer device) you will need to purchase an enterprise level router which supports this functionality.
There are other options including using a spare computer as a gateway server.
http://www.wirelessforums.org/alt-internet-wireless/wifi-network-bandwidth-limit -4632.html

Difference between routers and/or Whats better?

Hey, I currently have a WRT160N V2, I had it for a couple of years..
I been googling and searching for new and better routers but I dont know which one to choose.
I look here http://homestore.cisco.com/en-us/products/linksys_stcVVcatId551966VVviewcat.htm
And also http://www.ebay.com/sch/i.html?_trksid=p5197.m570.l1311&_nkw=linksys+wireless+router&_sacat=58058
I hope I can find one thats way better than the one I have for atleast under $120
Solved!
Go to Solution.

I recommend you getting the EA2700 for $99.99. click here
By the way if you are willing to add $30, it would be better to get the EA3500. click here

The difference of the IEEE802.1x Auth between Cisco Routers and Catalyst switches

Hello
I am investigating the difference of the IEEE802.1x Auth between Routers and Switches.
Basically dot1x auth is availlable on Catalyst Switches. however if I want to check to
PortBased Multi-Auth , MAC address Auth and any certification Auth with this feature,
Is it possible to integrate into Cisco Router such as Cisco 891F ?
In my opinion Cisco891F is also available to use basic IEEE802.1x but if it compares with Catalyst switches such as Cat3560X
I think there might be any unsupported feature on Cisco 891F.
I appreciate any information. thank you very much in advance.
Best Regards,
Masanobu Hiyoshi

Many time in interviews asked comaprison between cisco routers and switches that i was answerless bcoz i dont have much knowledge about that.Can anyone provide me the compariosin sheet of the same.how are the cisco devices differ with each other how much Bandwidth each routres support and Etc...
Ummmm ... The most common question I get is "what is the difference between a router and a switch".
However, if you get a question like this, then my impression to this line of questioning are:
1. The candidate they are looking for has in-depth knowledge of routers and switches. And I mean IN-DEPTH!;
2. They are not looking for a candidate. They just want to stroke their ego. There is not alot of people who can give you the "names and numbers" of routers and switches at a snap of a finger. And if you do happen to know the answer, then and there, then expect a tougher follow-up question.

3750 bandwidth limitation between the same vlan over the trunk

Hi All,
I have 2 3750G series switches on the trunk link. some machines are part of vlan1 on the switch 1 and some machines are the part of the same vlan1 on the other switch2. I need to limit the bandwidth between the switches for the vlan1. picture is attached.
I tried to do through the modulare policy frame work (class-map/service-map and policy-map using the police command) but problems are
1) 3750 does not support output service policy, so i cannot apply the policy on the output of the trunk link.
2) I can apply the input policy but it will be only for one machine but not for the others on the same switch. if i apply the policy on per port basis then every port has separate bw limitation. I require to limit the bandwidth on per vlan basis on the trunk port. like vlan 1 takes 10 MB, VLAN2 takes 10 MB on the trunk link when communicating between the same vlans.
Is there any solution for that scenario? your help in this case will be higly appriciated. As its the layer 2 communication, its hard for me to find the solution. if it was layer 3 then i can do it easily by using the rate-limit commmand on the interface.
thanks

On the 4500 series we use vlan-range for this,
conf t
qos aggregate-policer 10MB 10 mbps 1250000 byte conform-action transmit exceed-action drop
policy-map 10MB
class class-default
police aggregate 10MB
interface GigabitEthernet1/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,10,12,15
switchport mode trunk
switchport nonegotiate
vlan-range 1
service-policy input 10MB
service-policy output 10MB
end
dunno if the 3750's have the same options

Questions about the bandwidth.

Let me explain my existing environment
as follows :
- I have two 2801 routers with
C2801-SPSERVICESK9-M IOS
- Each router has Four-port FXS
connected to the phones
- The bandwidth between these routers
is 256 Kbps ( Leased Line )
My qouestions are as follows :
1. How many bandwidth are a call
comsumed ( per call ) ?
2. To ensure that the bandwidth of
VoIP is not excess the maximum
bandwidth of leased line. And to
ensure that the priority of VoIP
is always higher than the priority
Data. I will use RSVP and CBWFQ
with ip precedence. Are these
features suitable for the
situation ?
Thanks!! : )

hi
regarding bandwidth consumption it depends upon the kinda codec which you are gonna use up there.
ofcourse g.729 does uses minimal amount of bandwidth and also that get reflects in ur quality.
If you are gonna used some kinda RTP compression out there that can always reduce the packet length drastically to lesser size which will be easier as well u will be able to use the B/W effectively .
regarding the priority part you can always use up LLQ to have high priority for your VOICE traffic and deploy CBWFQ for your data traffic.
if u wanna have sample configs would suggest to do a search in cisco about the same ,if u need further assistance do revert..
regds

Bandwidth between Routers

Similar Messages

Maybe you are looking for