Cisco WAN :: VWIC2-2MFT-T1/E1 - PPP Multilink Configuration
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.
Can I use VWIC2-2MFT-T1/E1 along with NM-HDV2-2T1/E1 on 2921 and what is the minimum requirements for IOS image?As I understand, NM-HDV2-2T1/E1 is supported on 2921, however VWIC2-2MFT-T1/E1 is not, VWIC-2MFT-T1/E1 only. But VWIC-2MFT-T1/E1 is not supported on 2921.
I'm just double checking here because I saw one doc that didn't mention the 2900 on the data sheet but, I ve seen the 2900 listed with on others. I don't see the 2900s listed in this with the interface.
I have been advised by my service provider that to do ATM IMA I need an AIM-ATM and a VWIC2-2MFT-T1/E1 card, and that IMA is not support on the VWCI2-2MFT-G703 card.
i have VWIC2-2MFT-T1/E1 card installed in 2821 ISR router, ios (C2800NM-SPSERVICESK9-M), Version 12.4(25d).does this IOS supports unframed G.703 and also does this card VWIC2-2MFT-T1/E1 supports unframed????
I purchased a 2911 months ago to connect a remote site via T1 circuit.I think I might be missing some hardware to make this work on the remote end. Currently have a VWIC2-2MFT-T1/E1 card.Does this WIC actually work with this router? So no reference that this VWIC works with 2911.
I have a 3845 edge router connected to the Internet via four T1s and a HWIC-4T1/E1 card. We are adding two more T1s to the mix, and I have a VWIC2-2MFT-T1/E1 card. Here are my questions:
1. Is it correct to state that the VWIC2-2MFT-T1/E1 can support data in addition to voice?
2. I can use the HWIC and VWIC cards together to utilize the 6 T1s together?
3. Do I just add the card, configure the new slot, and add it to the same channel group?
Below is the current config regarding the existing card HWIC:
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]
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).
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.
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.
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.
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.
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)
I have a VWIC2 running two T1 circuits to two locations. Can I put the controllers on the same channel group? I also have a PPP multilink controller on a VWIC2 on channel group 0.
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
I have checked and re-checked before buying and this card is evidently supported on the 1841 for 'data mode only' which is all I need. I have 3 T1s in Multilink mode and I want to use 2 of these cards (and 3 of the 4 ports) to support it. The problem is that even though SH INVENTORY finds the card, I can't issue the "card type" command to indicate I am using it with a T1 - I get this:
R3(config)#card type t1 1 0 ^ % Invalid input detected at '^' marker.
So I tried to issue the "controller T1" command and it does not recognize the slot as containing a T1 card (which makes sense since the "card" command did not work).
I found numerous references to this card being supported in Cisco docs with a minimum OS around 12.2(8) - it varies based on the chassis. I can't find the explicit OS required for the 1841 which is a concern but I am using 12.4(13r)T. SH VERSION finds "2 Channelized T1/PRI ports" which is the MFT card.
I need to get Serial interfaces configured on these cards.
I have a problem with configuring of my vwic3-2mft-t1/e1 card on Cisco 2821 router. I need drop some raw data timeslots from E1 frame and then insert them into frame on other port. I enter the following commands:
I find these commands in Cisco 1 and 2-port T1/E1 Multiflex Voice/WAN Interface Cards for the Cisco 1700 Series Router configuration guide for vwic2 cards.But this config is not working properly. show connect output is showing status of connection "UP", show controller e1 shows no errors on both e1 ports, but data not flows between ports.What am I doing wrong? Have vwic3 and vwic2 cards different configuration procedures or not?
I had to dig this stuff out of storage and cobble together a router on short notice. I installed this WIC into a 2821 and I can see it when I do a show ver.
Cisco 2821 (revision 53.51) with 249856K/12288K bytes of memory.Processor board ID FTX1006C0P32 Gigabit Ethernet interfaces2 Channelized T1/PRI ports <-----------------------------1 Virtual Private Network (VPN) ModuleDRAM configuration is 64 bits wide with parity enabled.239K bytes of non-volatile configuration memory.125440K bytes of ATA CompactFlash (Read/Write)
When I do a sho run I see this: controller T1 0/0/0 framing esf linecode b8zs!controller T1 0/0/1 framing esf linecode b8zs
How do I configure IP interfaces on it though? It doesn't seem to show up as Serial ports on a sho int. Am I doing something wrong?
I was just given a task to setup some T1 connections. We rarely use T1 interfaces anymore as they are typically just not enough anymore. I see the newer vwic3 interfaces are supported on various 2900 series but downloaded the vwic3 configuration guide and noticed that the 1900 series routers were not in the list? Is this correct. So are vwic3-2mft-t1 ehwic cards supported or not on 1921 routers? i can see the controller interfaces but not the ports as there must be additional configuration required. Im running 15.1(4)M4 IOS version that looks to be supporting the cards.
I have a 2921 router, with UCK9 services on it. I've installed a VWIC2-2MFT but the system is not seeing it. I've been told there is a command required to enable the card, is this true? I've always done most of my UC work on the 2800 range and never had to run an enable command, it just saw the card.
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.
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
I have a 2811 that I'm in the process of turning-up to support a 4xT1 using VWIC-2MFT-T1's. The question is how to "correctly" set clocking on the MFT's.
As is typical of the 2MFT's, as soon as a 2nd T-1 on a VWIC-2MFT comes up, I start taking "Slip Sec"s on the 2nd T-1. I have tried different clock source combinations, including "clock source line primary", various "network-clock-participate" (or not) combinations, and about a dozen other stab-in-the-dark configurations. Before I started playing with it, the slips were consistently every 9 seconds. After playing with it, I got them to every 18 seconds. But there shouldn't be ANY. So the question is what SHOULD the correct timing configuration be on that platform?
The VWIC-2MFT-T1's are in slots 1 and 3, so the controllers involved are 0/1/0, 0/1/1, 0/3/0 and 0/3/1.
I am trying to install VWIC2-1MFT-T1/E1 into c2600 router w IOS C2600 Software (C2600-I-M), Version 12.3(26) with 28672K/4096K bytes of memory It is not recognized? Do I need another version of IOS?
I have not worked on the new VWIC cards lately. I would like to know how I can configure the serial IP address like we used to do in the older T1 DSU WIC cards. I do not see any interface that shows as serial. I have configured the controller as a T1 controller but still no luck.
Trying to connect two Cisco 1941 routers with VWIC2 1MFT-T1 interfaces on point-to-point T1 (No Voice). Sample configuration, this is what I have so far, but I'm not sure if it's correct. Do I need any specific information from my point to point T1 provider?
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
I am trying to use the connected WIC2-2MFT, as the servial interface on my cisco 1841.But it does not show me the option, under configuration interface
[code] What should I do to make this enable on this list?I am attaching the show tech-support, and show version of this device.
