Cisco WAN :: 1911 / Compression Methods Can Use For PPP Multilink Connection
Jul 18, 2011
I am looking for any other compression methods I can use for my PPP multilink connection. The PPP multilink compression is composed of two T1 lines. There are no slip sec errors or packet errors that I saw recently. R1 is a 1911 and R2 is a 2911.
R1 sh compress:
Multilink1
Software compression enabled
uncompressed bytes xmt/rcv 184340310/27355186
compressed bytes xmt/rcv 126395743/14139585
Compressed bytes sent: 126395743 bytes 774 Kbits/sec ratio: 1.458
[code]....
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Feb 9, 2011
I would like to know the various ways by which ISP's verify the various devices connected to their network. I live in a student apart with only 1 ISP. This ISP doesn't like the idea of clients sharing or distributing the same internet line. I purchased a wireless router in order to obtain wireless connectivity in & around my room, especially because i like using wifi on my mobile phone. My ISP then introduced MAC address authentication in order to limit the widespread use of routers, but i later figured that out and simply had to clone my pc's MAC address so that my router could obtain connectivity. But it's been about a month now since my router has lost connectivity. The only way by which i get internet is by directly connecting my pc and entering the appropriate static ip address. All my friends who also use routers in their rooms have also lost internet connection through router. I've been trying to figure out exactly which method he is presently using to authenticate the various devices connected to his network, so that i could use my router to also emulate my pc.
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Apr 17, 2012
METHODS THAT ARE SUITABLE TO CONNECT TWO OFFICES LOOKING AT THE SECURE INTRANET....
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Jun 5, 2011
My pings, connected wirelessly.My pings, connected with an ethernet cable to the same router only a moment later, no difference in what programs are open and using the connection.This is a newer laptop model from Asus, specifically this one. Windows has been updated and the computer is otherwise well-maintained, I being a (usually) proficient pc user.This is on a friend's wireless network, not my own. I won't have access to my own until tomorrow but, anecdotally, I believe the symptoms are similar but a little worse here. Concerning his network, I have been sitting in the same room with two other people connected wirelessly as well to the same network for hours on end and they experience zero noticeable spikes.I've been trying to find a solution using google with no progress.
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Jun 21, 2010
Do you know if cisco has release new version that fixed COMP-LZS feature on ASR 1000 series ? or any ETA on that ?
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Jan 24, 2011
How many synchronization methods are utilize in an Ethernet network?
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Jan 24, 2013
I have a 2504 controller and 2 2602 access points. I have managed to get them connected ok to the controller. Now I'm in the home stretch here trying to figure out how to authenticate clients to active directory 2003.I have followed a really good guide on setting up the windows 2003 CA server and have got my certificates installed ok on the controller.It looks as though I have to install the client certificate on each client laptop?? Is there a method other than client certificates with active directory?
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Feb 16, 2011
I am planning to have 2600 routers with Hardware compression module to accelerate the application performance and to optimize the wan bandwidth.I checked it 10 times optimize the bandwidth. Any pros and cons of these module.I searched in web but didn't get exact points.
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Sep 10, 2012
I would like to know if the ASA 5520 BUN K9 supports the data compression on VPN IPsec.
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Jul 22, 2012
We have an issue in .css compression on IE6. Hence we excluded .css from compression but still it is being compressed and the page is not getting displayed correctly. In addition I have also applied acceleration policy.
Is there any reason why .css not matched on the exclusion class map & getting compressed? Is optimization policy related to this issue?
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Aug 2, 2011
I have been given a task to create 2 checks using snmp for nagios. I am googling left right and center to maybe try and find the appropriate OID's that i can pass to this nagios check for both ssl throughput as well as compression throughput.
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May 24, 2011
do you know what happens if you reach the limit of, for instance 100 Mbps, compression. I know that if you reach the bandwidth limit ACE will drop packets but if you configure compression what happens if you have 110 Mbps.
I supossed that ACE will compress 100 Mbps and leave 10 Mbps without compression but I don't find this information anywhere.
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Jan 18, 2012
I need configure HTTP Compression by hardware on CSS 11503. I make config like this [URL]
My config:
service s1
ip address 10.1.66.11 (web server)
keepalive type none
[Code].....
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Feb 26, 2006
I have three E1 as a part of Multilink group. If any one goes down. loadbalancing between the rest of the two E1 does not work...
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Mar 7, 2012
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]
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Jun 15, 2011
I think I have my PPP multilink setup correctly. Though I am getting AL lights on one of my connections via a VWIC2-2MFT-T1/E1 card. One AL light is on at each location. Though I checked with my ISP and they said it was my network cables as everything looked good on their end. Currently one T1 circuit is connected at each end so users do not see a disruption. This is a new install with two routers and the config is shown below.
Router 1-----
controller T1 0/0/0
cablelength long 0db
channel-group 0 timeslots 1-24
(code)
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Feb 18, 2013
I have a Cisco 2821 with two serial interfaces bundled using PPP multilink. I want to monitor traffic flow (net flow) on the multilink interface. I have tried configuring ip route-cache flow/ ip flow ingress / egress but no luck.The other thing is when I do sh ip cache flow I guess I should see the multilink interface in both Source and destination columns which is not happening (not showing in destination column).The other router with same config but with ATM sub-interface working properly (same IOS). Are there any hits on this ? Also, is it possible to use SPAN feature ? The monitoring server is at some other site (coming via WAN).
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Feb 6, 2013
I have two Cisco Routers 3800 series for my internet traffic (2 ISP). I configure HSRP on the interfaces gigabitethernet and at the main router I put the multilink interface to track. When the connection drops to the main router traffic does not switch on my second router.
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Apr 3, 2003
Customer site connected to a PE using 2 x E1 circuits aggregated using Multilink PPP. The CE is a 1760, and the PE is a 7206. This is the customer HQ site.
Connected to the same PE are three other sites from the same customer. Each is connected with a single E1, again each CE is a 1760.
During some testing the customer did some large file transfers concurrently from each of the three remote sites into the HQ, so we had data coming into the PE via the three E1's (6Mbps) and then being routed onto the 4 Mbps Multilink PPP interface into the HQ, which is a potential bottleneck. This test failed miserably with packets being dropped on the output interface on the PE facing the HQ.
But then if Multilink PPP encap is removed, and we just connect the HQ using one E1 with HDLC encapsulation, the test works, even though we have half the bandwidth to the HQ, so an even greater potential bottleneck.
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Oct 16, 2011
I have a question regarding mlppp and bonding mpls T1 circuits. For the longest time we have been able to get by on one T1 circuit coming into our 3845 router. Well this T1 has now become congested and they are wanting to add bandwidth to this T1. We connect to the phone company via an MPLS T1 currently. So now it appears as though we are going to purchase another MPLS T1 circuit and bond the two T1's together. The way our network is currently set up, we utilize the same AS number on all of our remote routers regardless of location. Keep in mind I don't have any sort of mlppp set up at this moment, so unfortunately I can't post any configs. I'm just questioning the design portion and how to go about doing this.
Here is where my dilemma begins........
For every MPLS circuit we order on the remote end, we specifiy an IP for the remote router itself and one for the provider to assign to their equipment (the bgp neighbor statements). Now granted i'm no BGP extraordinaire, not even a novice really, but I don't understand how I am going to bring two T1 circuits into the same router (basically with 2 pairs of IP's). In order to bond the two T1's together, i'll need to create a multilink interface and assign an IP to that, but yet I still have 2 SETS of ip addresses. And if that isn't enough of a dilemma, I also need to spedify a neighbor statement in order for my AS to bind to the adjacent provider AS, but yet I have two IP addresses for that as well.
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Feb 14, 2012
MPLS customer with 4 T1s in a multilink. If one of the T1s drops there is a brief delay in traffic picking back up and I actually lose packets from premise back to CO. You can see this loss both with pinging across the circuit and with techs on either end running JPerf. It can take as long as 6 seconds for the reconvergence to actually happen on the multilink and traffic picks back up. In my experience this is normal behavior for Mulitlinks
I'd also like to note that it is indeed much quicker reconvergence when you physically pull the T1, any of the T1s, rather than administratively shutting down one of them and I understand that the hardware is quicker than software and that's a good thing, obviously. I've tried this with and without ppp mulitlink fragment disabled on either end and every other combo between the two. Each of the 4 serial interfaces are on line timing and I tried free-running just on the off chance that it could imrpove the loss, but it gets worse.....back to line timing. I've even tried this on other CPE platforms like two different versions of Adtran CPEs and I get the same thing. Currently I have a new 2821 CPE in place and still get the same thing. Still see a brief amount of traffic loss up to 6-7 seconds or so at times.
7600 side:
interface Multilink592
ip vrf forwarding ******************
ip address *************************
load-interval 30
no peer neighbor-route
ppp multilink
ppp multilink group 592
ppp multilink fragment disable
no cdp enable
service-policy output VPN-TEMPLATE-2(code)
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Oct 15, 2012
I am configuring ISDN Interface on 2 Cisco 886VA Version 15.2(3)T . I am unable to set ppp multilink on the BRI0 interface and on the dialer interface. It's like the command doen't exist anymore.How can I fix that so that i can have 128 K bandwidth between ma 2 sites ?.
Router1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router1(config)#int bri0
Router1P(config-if)#ppp multilink
[code]....
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May 8, 2012
I have configured multicast (ip pim dense-mode) on two 2911 routers that are connected by a Multilink (3Mbps) Wan connection.The configuration work fine for awhile and sometimes all day but at some point one of the Multilink interfaces stop passing multicast traffic.I perform a sh multilink 1 on the interfaces and one interfaces show the multicast packets incrementing and the other does not, it just stops.The only fix for this is to hard reboot both routers and the multicast traffic begins to flow once again.
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Jan 5, 2011
We have 4 data T1s providing our office with 6Mbs of internet bandwidth.I have been trying to track down the reason(s) for the steadily increasing frame and abort errors on the Multilink interface of our new router.We have a new 2961 with 2 2 port T1 interface cards (VWIC2-2MFT-T1/E1).
At first it looked like the T1s were completely clean, but after diving down a bit the last of the 4 T1s does appear to have a decent amount of slip and error seconds.Is that something that would cause the Multilink interface to show input, frame, and abort errors?Any config or debug commands I should start with to narrow down what might be causing this problem?
Config snippets:
card type t1 0 0card type t1 0 1!controller T1 0/0/0clock source internalcablelength short 440channel-group 0 timeslots 1-24description HCFD-XXXXXX!controller T1 0/0/1clock source internalcablelength short 440channel-group 0 timeslots 1-24description HCFD-XXXXXX!controller T1 0/1/0clock source internalcablelength short 440channel-group 0 timeslots 1-24description HCFD-XXXXXX!controller T1 0/1/1clock source internalcablelength short 440channel-group 0 timeslots 1-24description HCFD-XXXXXX!interface Multilink1ip address X.X.X.X 255.255.255.252ip nat outsideip virtual-reassemblyppp multilinkppp multilink group 1ppp multilink fragment disable!interface Serial0/0/0:0description T1 : HCFD-XXXXXXno ip addressencapsulation pppppp
[code]....
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Nov 1, 2011
I just finished setting up a bundle of (2) T1's in a multilink bundle and I'm having issues with one of the T1's not wanting to join the bundle.
The router I'm using on the remote office location is a 3620 router running code c3620-i-mz.121-1c.bin
The campus router which is a 7206 is setup the same exact way with multilink 240 and like I've said, serial 0/0 is joined to the bundle just fine, so we are running off one T1 connection.
The serial interface that is not working is: serial 0/1
Here is a show-run:
interface Multilink240
ip address 172.18.xxx.xxx 255.255.255.252
ip route-cache flow
ip ospf network point-to-point
service-policy output PhonesFirst
ppp multilink
[code].....
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Jun 11, 2012
One of my customer has raised a new requirement for implementation of short sequence number format support in PPP multilink header for Cisco MWR 2941 E1/T1 serial interface, whereas router is supporting long sequence number format.here is the output of "debug ppp negotiation" command:-Currently in the MWR debugging logs we can see that by default MWR is sending long sequence header format as below
*Mar 13 01:32:55.438: Se0/2:0 LCP: O CONFREQ [REQsent] id 238 len 25
*Mar 13 01:32:55.438: Se0/2:0 LCP: MagicNumber 0x26CDF693 (0x050626CDF693)
*Mar 13 01:32:55.438: Se0/2:0 LCP: MRRU 1500 (0x110405DC)
*Mar 13 01:32:55.438: Se0/2:0 LCP: EndpointDisc 2 16.16.16.11 (0x1307021010100B)
*Mar 13 01:32:55.438: Se0/2:0 LCP: MultilinkHdrFmt seq long classes 2 (0x1B040202)
While as per the requirement PPP multilink header should support short sequence.
MWR configuration:
controller E1 0/2
framing NO-CRC4
clock source line
channel-group 0 timeslots 1-31
[code]....
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Feb 3, 2011
I have a Cisco 3725 running IOS 12.3. I have three WAN connections (2 x 100Mb and 1 x 2Mb serial) and I need to replace the 2Mb serial connection with a further 100Mb connection. However, I have not got any spare 100Mb sockets.My plan is to use a switch that supports VLANs, connect the three WAN connections to the switch, each in their own VLAN, then connect the switch to one port on the router, configuring the switch port as a trunk (so that it passes all three VLANs across the link) and configuring the router so that for that single Ethernet interface, it has three subinterfaces each configured for a VLAN that matches the VLAN used for the corresponding WAN connection.
I am a bit rusty on my IOS so I wanted to run this all past the community for feedback. [code] Any thoughts on whether or not that will work? Are there any commands from the original interface configurations that I CANNOT use when moving them to a subinterface? I'm thinking that the speed & duplex commands need to be removed?
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Dec 18, 2011
We're getting "Connaction Timeout / Connection Failure" error messages several time per day. Here is our setup:
Verizon FiOS Internet (ONT Box) --> Cisco ASA 5505 --> EdgeMarc 4500 Router --> Cisco 300-24G Switch --> Dell PE1950 Servers
From past few months, we keep getting Connection Timeout and Connection Failure error messages in our vendor application which connects to SQL Server 2005. Also Terminal Server 2003 keep disconnecting for every few hours.After several days of troubleshooting, we come to know that this Cisco ASA 5500 is not working properly. When I access the ASDM, it shows several warning messages.I know there is a setting option to configure TimeOut, but is there anyway to test and track the ASA 5500 regarding this Timeout issues?
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Nov 26, 2012
I have a problem with my computer connections.When I plug in a network cable to access LAN, a wireless Internet connection gets disconnected.When I unplug the cable internet connection through wireless comes up.Some computers can support both connections cable for LAN and wireless for Internet.Other computers do not support both connections.
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Jun 25, 2012
I am trying to confgure a VPN connection on a Cisco ASA 5505, and I am supposed to translate the inside network from 10.200 76.0 to host 10.1.4.204, and then from that scheme establish a VPN with the host 66.179.80.108 on network 192.168.50.0/24. I was told that this Cisco ASA appliace would be able to translate the network address as a mask in order to make the necessary connection with the other site connection.
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Nov 15, 2012
I have an Acer 7750G, running Windows 7,connected to our home network using a Dynex router. At the moment this is the only laptop in the house that is having problems with connectivity. Starting yesterday, it only connects intermittently. When I run diagnostics, it says the following problems have been fixed but it either solves the problem for a few minutes only or not at all: "Problem with wireless adapter or access point" or "Default gateway is not available".
IPV6 connectivity also shows 'no internet access' and sometimes IPV4 reports no internet. I've unplugged and rebooted the modem and router a few times but that hasn't solved the problem.
Edit: I ran troubleshoot again, and it says the following issue is not fixed: "Wireless Network Connection 2 does not have a valid IP configuration".
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Nov 29, 2012
so I would like to know if I have a cisco 800 series lets say with interface fa0/0 being my public interface.can I have on this interface an easyvpn connection to a hub and a crypto map xyz connection to another hub?all the tests I've done using gns3 indicate no. when I have both on the same interface only eazyvpn works. when I remove the eazyvpn from the interface then site to site works.I know with a crypto map I can have different tunnels but my question is a crypto map and an eazyvpn on the same outside interface can it work.if yes, do you have a configuration example of the 2 hubs and the spoke?
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Mar 21, 2011
I just bought a "DLink Xtreme N Gigabit Router DIR-655" I configured it correctly. It works well for the wireless connection but my Lan connection (wired connection) does not work. The Lan computer connects to the router but cannot access the internet. All of my machines work OK with a Netgear G router, including the Lan computer.
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