I work for an ISP and we are currently bonding 5x 6Mb ADSL connections for use as a wireless backhaul. We are currently using a Cisco 3725 and bonding the links via MLPPP. This set up is working fine except that we are not getting the full 30Mb on the download side. We are seeing more like 18 to 20. I am wondering if we can acheive the full speed with our current set up or will we need something different to get the job done.
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We are bonding two LLU DSL lines using MLP. Our LLU provider supports MLP bonding and we have a few other customers working well on Cisco 1841s, although not such high sync speed lines as this problem site.
So the lines work well with no interface errors and sync speeds are very good and evenly matched between the two lines (approx 14Mbps downstream). It's all good - it's great in fact except that it just doesn't work properly! By that I mean we're not seeing the downstream throughput we'd expect. We actually get the downstream throughput of less than a single DSL line, so about 12Mbps. Upstream bonded throughput is fine and in line with the sync speeds.
Both circuits are 'active' in the PPP multilink bundle and I see 3 sessions on our core LNS Cisco 7301 (c7301-boot-mz.124-2.T.bin) - i.e. 2x circuits + 1x bundle. We've checked the circuits individually and 'actual' throughput (using NetPerf software) is similar for both lines and in line with the sync speeds.
We are seeing quite high CPU (50%) on the Cisco 1841 (c1841-ipbasek9-mz.124-24.T1.bin) at the customer premesis, but having tested a Cisco 2951 on the customer premesis with two new HWIC-1ADSL-M cards, this is not the cause. The 2951 ran at 5% CPU whilst we experienced the same problem.
We've checked the setup of both Cisco CPE and LNS with our LLU provider and they are happy with the MLP config. They themselves have been able to bond two similarly sync'd Annex-M DSL lines and get 25Mbps throughput on a 1841.
I'm going to combine 2 512 kbps ADSL line in my PC. i know that it would be much better to get a 1 MB ADSL connection...but the problem is where i live now there is not better speed than this! Well i have a PC with 2 LANs - 2 phone lines - 2 ADSL modems - as far as i learned from Google , by no means it is possible to combine them to have 1 MB data rate but it is possible for example IDM would works with one 512 and another program with another 512..!! And load balancing is the only solution for this which it needs a special routers ! it is somehow difficult for me to provide one ..!! so my question is :
1- Is there any other solution for combining this 2 lines?! I heard something about teaming.
2- Is it possible to use load balancing by software?
3- How about the efficiency and ping time?
I've 6 ADSL lines that provided by the same ISP and i've Cisco router 2600, so, how can I connect the six lines to the cisco router and running load balancing between them ??
View 3 Replies View RelatedI have the requirement to provide a Cisco Router with 3 x ADSL lines (768k) to increase the internet speed.PPP multilink is not supported from the ISP.
Is it possbile to distribute the traffic between this three ADSL lines?How can I configure this?
I have the following hardware configuration:
1 x CISCO1921-SEC/K9
2 x EHWIC-VA-DSL-B
The third ADSL line is connected over an ADSL modem at one fixed Router Gigabit interface.
We have a cisco 1941 with line t1 Symmetric, (Also have Cisco 1841 unused, but works) I would like to connect the Cisco 1841 to four Adsl Backup lines in case the T1 or the Main cisco 1941 go down I know a BGP is needed on our ISP site,
How can i connect four Adsl lines to The cisco 1841 (Backup) and make them work in a Load Balancing way.
I want to configure my router to use 2 ADSL lines each with a dialer and a modem in RFC2684 mode. I have a 2821 (IOS 12.4) with an HWIC-4ESW.
My network topology is like this :
ADSL Modem 1 (RFC2684) --
(Fa0/0/0)
Router -- (Gi0/1) MyLAN
(Fa0/0/1)
ADSL Modem 2 (RFC2684) --/
1. I configure my DSL Modem in RFC 2684. The first use 172.16.0.2/29 and the second 172.16.0.3/29. I connect this devices to Fa0/0/0 and Fa0/0/1.
2. I configure Vlan1 to use the network configured on my modem :
interface Vlan1
ip address 172.16.0.1 255.255.255.248
3. I try to ping my devices :
#ping 172.16.0.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.0.3, timeout is 2 seconds:
!!!!!
[code]....
I have a Cisco 1841,c1841-ipbase-mz.124-20.T4.bin, with 2x HWIC-1ADSL-M.I have managed to bond 2x DSL with PPP multlink with the config below and traffic is being sent equally across both DSL circuits. However if i disconnect either of the DSL cables connectivity fails. I was expecting connectivity to continue to work just over the one circuit. [code]
View 1 Replies View RelatedDoes the new UCS hardware change anything ?Can we bundle 2 NICs somehow to get interface redundancy ?If still not possible to configure that in ACS 5 itself:Can it enentually be done on the "hardware" level within the appliance firmware (UCS BIOS) ?(RHEL would provide NIC bonding,,, unfortunately its not accessable from ACS5 CLI)
View 6 Replies View RelatedEven without Open vSwitch, and using the stock, Linux bonding module with 802.3ad mode I had the same problem.
From what I have read about bonding, it seems like if you bond (for example) 2x 1Gbit Ethernet connections on two servers (ie so both have two ports bonded), then if using something like 802.3ad, a file transfer should utilize both ports, and you should see a throughput of 2 Gbit/s. So this would be an increase in throughput and bandwidth, right?
But, what I generally see, is for any single TCP connection, only one port is ever utilized at a time.So for example if I'm SCPing a large file from server1 to server2, I generally see that the scp session is only using one interface, at 1 Gbit/s. I can then also run a second SCP session which will use the second port, and also move at 1 Gbit/s.
This would be increasing the bandwidth, but not the throughput, correct?Which of these behaviors is what I should be seeing with 802.3ad? I guess it depends on the hashing method? Is there a hashing method which will allow a single connection to be spread over two interfaces, allowing 2Gbit/s transfers?
I have a Cisco 6500 router at my POP site and I have a Cisco 2811 at the tail site. I have to bond 3 city to city T1s to make a 4.5Mg pipe between the 2 ends. How do I configure the routers to make this happen? This is a configuration example for a single T1:
POP end on 6500:
interface Serial1/0/1:0
ip address 10.125.1.1 255.255.255.248
Tail site on 2811:
interface Serial0/2/0
ip address 10.125.1.6 255.255.255.248
I have two switches (sanitized configs attached) and I am trying to bond int gi0/1 and gi0/2 between the two. Then I need int gi0/3 back to the main LAN switches. These are new Vlans created 982 and 983 for these switches. Question #1: do the configurations look correct? I haven't placed any laptops on the interfaces to test interconnectivity yet but I am wondering if it will work with no default routes.
The admin team needs these switches at location A for setup then they will be moved to Location B. The only thing that sucks for me is that the network admin before me created gateway interfaces for all the local Vlans on a main router as sub interfaces. For example, for these two subnets, I need to create subinterfaces below (at location A), which is why a gave the Vlan on the switches, ip addresses.
interface GigabitEthernet0/0.982
encapsulation dot1Q 982
ip address 10.98.2.1 255.255.255.0
ip flow ingress
no cdp enable
service-policy input mark-mplsqos-in
interface GigabitEthernet0/0.983
encapsulation dot1Q 983
ip address 10.98.3.1 255.255.255.0
ip flow ingress
no cdp enable
service-policy input mark-mplsqos-in
When I move the subnet to location B, I will also move the gateway. These two switches will be used mainly for a VMWare and HyperVisor environment so Vlan 982 is for VMA network and Vlan 983 is for management. The admin tells me the software needs to tag the packets, I am not sure if I care as the switches should handle that also.
I have a project in an industrial environment which requires high speed wireless connectivity between 6 buildings,one central and five remotes.The maximum distance from the central building is 100 meters (take o look at the attachment diagram).I'm thinking of using the 1252a-n or 1262a-n access point to act as a bridge (root mode) at the central building with 3 omni antennas AIR-ANT5160V-R (6dbi) or 1 omni antenna AIR-ANTNV-R (4dbi).For the remote buildings i'm thinking of using 1252a-n or 1262a-n in work group bridge mode with 1 directional antenna AIR-ANT5160NP-R (6dbi).My questions are:
-Has anybody implemented a similar scenario,point to multipoint bridging with channel bonding at 5Ghz?
-How reliable will be the use of 1252 ap in bridge mode?
-The expected total bandwidth/throughput will be 300/150mbps,so theoritical every bridge will have 60/30mbps available bandwidth/throughput?
-Which antenna model do you suggest fot the central building?
we have currently a configuration with 3 bonded (link aggregation) channels, each delivering 1 Gb/s uplink, providing a total of 3 Gb/s uplink. Due to a recent network upgrade, we can now add more channels to the same group in order to have a total of 9 Gb/s uplink, meaning that we should bond toegether 9 channels. When we tried to change the old configuration in order to include six new channels to the bondend group we noticed 2 things: one channel was left in standby (blinking orange led),no increase in the uplink bandwidth semmed to happen,By looking around it looks like the channel group is limited to a maximum of 8 channels [*].
View 2 Replies View Relatedi have a problem with my adsl line connected on a HWIC-ADSL on router 2901 it was working good until yesterday the atm interface is down but the interface dialer is up .i connected this line into home adsl modem and the line is working good?
View 2 Replies View RelatedI am a traffic shaping newcomer and need some guidance as how to BEGIN to approach a problem with traffic. We have been rolling out Windows 7 at sites and the additional traffic it causes on installation is considerable as it has to request information from our central site to populate My Documents and Outlook mailboxes.This has caused some problems on sites as there traffic rates increase to the point that QoS is not sufficient to protect voice traffic and delays and one-way audio are being experienced.One question is this - is GTS a solution or is CBWFQ within GTS the solution or is something else preferable? The sites involved are data/voice with a variety of routers.Second question is this - if we have a remote site with a 3725 router as the WAN aggregator with one 4506/Sup IV and one Cat 3550-24-PWR the shaping should be best placed on the 3725, correct? Also, are there issues with shaping incoming/outgoing traffic as I seem to have read?FYI, the 3725 router has 12.4(8d) with IP VOICE/NO CRYPTO IOS version. The 4506 has 12.1(23)E4 with basic L3 feature set.
View 1 Replies View RelatedI have a 3725 router and would like to upgrade the slot:0 compact flash to a higher capacity. My question is, I can just pick up a 4GB compact flash card from walmart, or do I have to have a card from Cisco?
View 2 Replies View Relatedany 3725 IOS image that supports the ip sla command? I tried searching for it using the feature navigator but i received something like "15T" and I'm not too sure what that is.
View 4 Replies View RelatedI'm trying to bring up two t1 and bundle them into a multilink on a 3845 on one end and a 3725 on the other end. On the 3845 I have installed two VWIC-2MFT-T1-DI and on the 3725 I have installed two VWIC-2MFT-T1 and a 1DSU/CSU-T1-V2.
For some reason I'm able to bring up the T1's on the DSU/CSU WIC. When I try to connect the T1 on the other WICs, on the 3845 I see SLIPs and Interface Resets however on the 3725 there is no errors however I still see UP DOWN.
CONFIG 3845
controller T1 2/0/0
framing esf
linecode b8zs
cablelength short 133
channel-group 0 timeslots 1-24 speed 64
[code]....
I am implementing traffic export on the WAN interface of my 3725 router. I use a dialer interface for PPPoE which is applied to the Fa0/0 interface. This dialer WAN interface has Zone Based Firewall, NAT Outside, ACLs applied to it, as well as IP Traffic Export for an IPS. In what order would each of these items process a packet? In other words, is the order something like ZBF, ACL, IP Traffic Export, then NAT? How would QoS fit into something like this as well? I am asking because I am wondering how much processing the packets receive before they are mirrored over to my IPS.
View 1 Replies View Related I have a Cisco 3725 router with IOS version "Cisco IOS Software, 3700 Software (C3725-ADVIPSERVICESK9-M), Version 12.4(12)". And this router is serving as a CE route for our MPLS connection to the service Provider. We do also have multiple VRFs ( around 10) and the WAN interface is DS3. So we created point-to-point subinterfaces and we put them in different vrfs. We have now transitioned to a new ISP and the ISP requested us to mark all of our outgoing traffics with DSCP AF31. So I have created the following policy-map
policy-map TRAFFIC-OUT-WAN-AF31
class TRAFFIC-OUT-WAN
set ip dscp af31
class-map match-any TRAFFIC-OUT-WAN
match any
Now we do have multiple GRE tunnel interfaces sourced from one of the WAN subinterface ( which is a member of VRF A). So the moment I applied the the policy-map on this WAN sub-interface (using the syntax "service-policy out TRAFFIC-OUT-WAN-AF31"), most of the GRE tunnels went down. And there is eBGP running on top of these GRE tunnels.
I'm trying to migrate the running-config from our old 3725 router to our new 3945e router. Almost all of the config is copied over except for a few lines that come up as unrecongnized commands. So it looks like these commands were either removed or changed to something new.
View 12 Replies View RelatedI have been using a route map to pick WAN exit points (PBR) on a 3725 router. This have been working fine with /24 networks. I am trying to pick the first /28 piece out of the 10.1.1.0 network and send it out a different exit from the rest of that network. I have tried the /28 entry at the start and end of the route map, although I thought the first match would stop any further route map processing. The entry does not seem to have any effect, as traffic from all addresses in the 10.1.1.0 /24 network exit per the "route-map 10-LAN permit 11" section.
access-list 5 remark Ten Dot 1 low 63 IPs
access-list 5 remark SDM_ACL Category=2access-list 5 remark Ten Dot One Low 63 IPs access-list 5 permit 10.1.1.0 0.0.0.63 log
[ code]....
Cisco 3725
IOS: (C3725-ADVENTERPRISEK9-M), Version 12.4(15)T9
Wireless Module NME
Brief current running config below:
interface FastEthernet0/0
description WAN LINK
bandwidth 8192
[Code].....
I have a 3725 routeur configured to receive the PPP/ATM/DSL connexion of our customer. I have found that the routeur has created 1035 virtual-access (1035 is his max) but I only have 85 customer on this router
View 1 Replies View RelatedI have 3725 router with internal CF and external slot for CF. I tried upgrading and ended up deleting the iOS version on the internal flash, and can not now put the iOS back!! I turned it off.... so there was no active iOS..
I have tried formatting the CF card on an 1841 but the 3725 won't read it. It is obviously stuck at ROMMON
What is the correct way to format a CF card so my 3725 will read it and I can get an iOS back on it!!
I am setting up multiple vlan interfaces on a pair of HSRP Routers that will provide layer 3 routing for a network. I am seeing this command sporadically show up in the router config mac-address-table static 0000.0c07.acd2 vlan 210
I am not entering this command. So far, it has not shown up on the companion 3725 router. I have a 2nd vlan I have just created and the problem hasn't shown up for that vlan as yet.Using C3725-ADVSECURITYK9-M), Version 12.4(15)T7, RELEASE SOFTWARE (fc3) on the routers.
I have a 3725 router that is reporting the following syslog message:
%FAN-3-FAN_FAILED: Fans had a rotation error reported.
When I do a show environment all, I am getting the following message:
Fan status: Warning- low fan rpm condition detected.
Both the the fans are functional and are rotating fine. How do I repair?
I seem to be having a problem with DNS name resolution after configuring my router (Cisco 3725 running IOS image: c3725-adventerprisek9-mz.124-25.bin) for handling DHCP requests.
Before I made the change, everything was working correctly; I could ping Google.com from a computer inside my LAN and would get response from one of Google's public IP's like normal.
I had a separate DHCP/DNS server running Windows Server 2008 handling the DHCP request and DNS queries.
When I made the change, I turned off the DHCP/DNS server and issued the following DHCP commands to my router:
Code...
I'm trying to configure a SPAN session on a Cisco 3725 router, but it won't let me complete the command. The router has two Fast Ethernet interfaces: 0/0 and 0/1. I'm trying to configure a SPAN session with Fa0/0 as the source interface and Fa0/1 as the destination interface. [code] But when I try to configure the session, it seems like it's giving me the option to configure the SPAN session, but in the end the router won't let me: [code] When I type "?", why would it give me the option of using the Fast Ethernet interface as source port, then when I try to execute the command, it doesn't like it?
View 7 Replies View RelatedI read that there are internal and external flash memory in 3725 router that can max up to 128mb. So adding the sizes of internal and external flash memory, will that total to 256mb?
And also is the internal flash of 3725 just the same with its external flash?
I had the 2 circuits go down at the same time from our ISP and I had to power cycle the router and when it came back up I went from VA # 2 to now VA 3#....I know what is what but it is confusing for my counterpart and I can not remove the old entry for VA#1 and VA#2. [code]
View 3 Replies View RelatedI'm developing a project where I use the SNMP protocol to discover the network. By discovering the network I mean go through all the routers and switches and retrieve the IP routing table from routers and the forwarding table from switches. With the routers I have no problem. For the switches I need to know for each port the MAC addresses and the Vlans. Basically it's use SNMP to find a port number from a MAC address. To do that i followed this tutorial: [URL]
The problem is that I'm using a Cisco 3725 Router with IOS 12.4 (21) and a NM-16ESW module to work as a Switch and when I use the OID .1.3.6.1.2.1.17 corresponding to the BRIDGE-MIB as it follows:
snmpwalk -v2c -c myrouter 10.1.1.5 .1.3.6.1.2.1.17
it returns:
SNMPv2-SMI::mib-2.17.1.1.0 = Hex-STRING: 00 00 00 00 00 00
SNMPv2-SMI::mib-2.17.1.2.0 = INTEGER: 0
SNMPv2-SMI::mib-2.17.1.3.0 = INTEGER: 4
From this I guess there's no information on the router about Vlans or anything. Other thing is that when I use community string indexing it returns a timeout. My theory is that this version doesn't support indexing but I don't know.
how can I get the Port Number from a MAC address from this "switch" (it's a router working as a switch) using SNMP?
