Metro Ethernet over Docsis

Hello Gurus,
I would like to know a bit more about this tecnologie (Metro Ethernet over Docsis).
I work for a cable companie and we would like to know the implicationd of implementing such a technologie.
If we go for a CPE based aproach we only have to configure a CPE like the Cisco 1805 in each costumer end-point?
Which configurations does the CMTS and backbone require?
What are the maximum speed we can offer with this technologie running on HFC?
Any help would be much appreciated.
Thanks in advance.

You might want to read this:
http://www.cisco.com/en/US/solutions/collateral/ns341/ns522/ns3/metro_ethernet_white_paper.pdf

Similar Messages

Security for Metro Ethernet over Fiber

Is metro-ethernet over fiber (point-to-point) link secure ? Can someone sniff into the network (and see unencrypted data) over Metro-ethernet point-to-point link ?

You might want to read this:
http://www.cisco.com/en/US/solutions/collateral/ns341/ns522/ns3/metro_ethernet_white_paper.pdf

Traffic Shaping on 6880 between sites over metro ethernet

Hi
I have a new dual site setup with 6880s at the core at one side and 3650 stack at the other. We have a 200mbps ethernet solution from our service provider but on testing we are maxing at a bit over 100mbps, iperf tests directly on the link are giving 200mbps so I need to apply some shaping to get the full usage from the link. In the past I have used srr bandwidth on metro switches but the 6880s don't support this. So I assume I need to setup policy maps and apply to the physical interface? The interfaces are layer 2 trunks and we are stretching vlans between the sites. E.g. siteA has vlan20 and site B has vlan 20 over the metro ethernet service, site b is layer2 only and all routing and services are provided at siteA
Is it as simple as this? It seems too easy :) So I may be missing something. I just apply this on the physical interface at each side?
policy-map POLICY-S2S-200MB
class class-default
shape average 204800000
policy-map POLICY-S2S-200MB-IN
class class-default
police cir 204800000
conform-action transmit
exceed-action drop
~
int gi1/1/1
service-policy out POLICY-S2S-200MB-OUT out
service-policy out POLICY-S2S-200MB-IN in
Your input would due treaty appreciated!
Thanks,
Aidan.

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Ah, well that's great! (Hmm, now I wonder if same feature is available on 6500 with sup2T or 6807.)
In that case, your output policy might be just as simple as what's in your OP. Cisco isn't really clear whether all their shapers (or policers) are counting L2 and L3 or just L3. I suspect many just count L3. If that's true in this case, you may need to shape about 10 to 15% slower to allow for L2 overhead (this assuming your provider is providing 200 Mbps of "wire" bandwidth.
If you're able to shape on the other side, then there should be no need to also police the ingress. Also, assuming provider limits bandwidth, there's no reason to police ingress at CIR rate.

EIGRP with over 1000 neighbors using Metro Ethernet

No documentation about using EIGRP with what kind router can build a large network using Metro Ethernet. Cisco7600 become unstable unstable after applying over 600 eigrp neighbors.

Is there a reason you need EIGRP? If you're scaling to 1000 neighbors you should really use BGP. It's meant to be scalabale (I have routers that have 150,000 BGP routes in it). It's really designed for scalability, where as I find EIGRP is preferable in a low-neighbor routing environment.
-Mike
http://cs-mars.blogspot.com

Metro Ethernet Design question

Hello,
I was wondering how service providers guarantee their security protection in the Metro Ethernet model, especially when Internet is one of the applications used over the Metro network.
For example: The customer edge switch (3550) is connected directly to the service provider aggregation layer(either Cisco Catalyst 4500 and 6500 Series switches ) .
In the network core, Cisco 12000 or Cisco 7600 Series routers.
So where is the security devices in this architecture, where is the firewalls, the IDS/IPS, that protects the service provider core from any threats.
Providing the customer with Internet in Ethernet switching technology the service will put the provider in a vulnerable position.
Am I thinking wrong here?

Hi
The CE will be hardened using storm control both multicast as well as broadcast on the ports where the end users are connected.
About the accesiability between the other users who are connected on the ports of same switches you have switchport security coded which will take care of the access violation part.
Also the maximum no of MAC address which can be permitted/allowed over the ports.
This inturn will send u a trap and can shut the port if theres any violation detected on those ports..
In the next layer where u say 6500 or 7600 u will have FWSM modules which will be taking care of filtering and other funtionalities which is very much similar to a standalone PIX firewall.
you can have redundandcy or even load balancing with
the FWSM modules over there in the 6500 switches.
And ofcourse the IP addressing schemes deployed would be in private scopes and will have either NAT pools or PAT enabled in the FWSM.
you got to have more n more ACLS on all the devices to mitigate the general known worms/virus or their variants in the network applied in applicable points.
regds

Bellsouth Metro Ethernet -- is it QinQ?

I have a customer who has bought some connections from Bellsouth's Metro Ethernet product. I am having a tough time getting someone at Bellsouth to give me any information about the product.
Are they just using QinQ (802.1q tunneling) to make it all happen? If that's the case then I should just trunk to them with 802.1q and not have to do anything else, I believe keeping the native vlan 1 should even be fine. If anyone knows anything about this or has connected sites using the Bellsouth metro-e product please let me know.
Brian

Hello,
looks like it is Ethernet over SONET, with a possibility to migrate it to EoMPLS:
"Currently BellSouth uses a specialty Ethernet switch to support its shared multipoint offering, but that may change. "We're converting to more of a general purpose device that will be part of our MPLS network and will deliver Ethernet and other services," hints Kaish.
Some carriers have implemented shared multipoint services directly over fiber, which means that those services do not include Sonet restoration capability, effectively limiting them to non-critical traffic. But BellSouth's metro Ethernet network is Sonet-based and customers can leverage Sonet's restoration capabilities, Kaish says."
http://www.findarticles.com/p/articles/mi_m0DUJ/is_13_107/ai_108408900
Another source of information supporting the statements above:
http://newsroom.cisco.com/dlls/2004/prod_070604.html
In any case this does not mean straight forward, that you can use the service to setup trunks between your switches. This depends on the interface configuration of (presumably) the 7600. They might restrict you to dot1Q with one VLAN or even to plain ethernet.
Hope this helps! Please rate all posts.
Regards, Martin
P.S.: have a look at http://www.metroethernetforum.org/presentations/SC2003_BobSmithEntNet.PDF which should answer many questions! Especially they state "Dedicated Ethernet supports VLAN tagging" - sounds like setting up a dot1Q trunk with them will be supported.

Basic:Metro Ethernet and DWDM vs SONET question

Hey, my understanding is that in order to deliver Metro Ethernet solutions, one system must be based on DWDM.
SONET, for example, cannot deliver Metro Ethernetsince that is based on TDM (not Ethernet, duhhh).
If the above is right, so I want to confirm that there is no other technology out there besides DWDM which can deliver Metro Ethernet services for enterprise customers?

Any number of underlying technologies can be used to deliver Metro Ethernet services - DWDM, SONET, pure play Ethernet over metro area fiber, etc.
It's more of an economic (what installed base does the carrier have or able to obtain the use of and at what cost) and efficiency (how much of the overall capacity can be feasibly broken into resellable Ethernet services without too much stranded or wasted capacity) question than a technological one. Some technologies lend themselves better to one or the other of those factors thus their dominance in certain markets.
The industry is very adept at achieving previously unthought-of solutions through the introduction of additional layers of abstraction (e., Ethernet over SONET, inverse multiplexing, etc.)

Is Metro-ethernet Secured ? Compare with FR/ATM

Hi,
Just would like to understand if Metro-ethernet has the same security level as FR and ATM ? Metro-ethernet has broadcast nature and it seems mirroring ethernet frame is much more easier than FR and ATM . Is there any study onto the security issues presented in the Metro-ethernet technology ?
I see a lot of customers doing IPSec on the Metro-ethernet and they don't do this on the FR or ATM links ?
Thanks

I have not seen any document, but my understanding is that FR and ATM networks do not have broadcast capability which is an inherent security feature. Sites can communicte only if a VC is configured between them. In metro ethernet, broadcasting is possible and the providers have to implement security to islolate customers by configuring some feature. Since the customers may not trust the level of security provided by the providers, they may choose to run IPSec over this type of access.

UDLD in Metro Ethernet

Can i use udld between two switches connected in a metro ethernet network? My idea is use the udld to monitoring the health of the two physical interfaces that are doing part of the ether-channel. Each switch in the Data Center Interconnect have two links of different service providers and in the case of a failure in the Service Provider network, the interface of the channel goes down.

Hello Julio,
sorry for late answer
you can try to use LACP to have LACP control frames sent over each member link.
Lack of reception of LACP frames will move a link out of the bundle
in metro ethernet environment the better tool is ethernet OAM CFM mode that can involve SP nodes in the performed tests.
Hope to help
Giuseppe

3750 Metro ethernet switch

Folks,
I have 6500's at the core and want to use the 3750 at the PE. My question is the following:
1) 3750 would do Q-IN-Q.
2) Once the packet reaches the 6500(sup 720) running MPLS. What happens to the frame. Do i use xconnect to transfer the frame to the appropriate PE?
Just confussed about how does the PE use the Q-IN-Q information to direct it to the appropriate PE?
Sample config would be highly appreciated.
Thanks

Well.. its about product features .. you gotta compare products with your requirments at various layer of your network and to come out with justification of your requirments . Any ways below is snippet for you to have some justification between two products
===============================================
What is the difference between the Cisco Catalyst 3750 Metro Series and the Cisco Catalyst 3750 Series?
The Cisco Catalyst 3750 Metro Series is built for Metro Ethernet access in a customer location, enabling the delivery of more differentiated Metro Ethernet services. These switches feature bidirectional hierarchical QoS and Traffic Shaping; intelligent 802.1Q tunneling with class-of-service (CoS) mutation; VLAN translation; MPLS, EoMPLS, and Hierarchical Virtual Private LAN Service (H-VPLS) support; and redundant AC or DC power. They are ideal for service providers seeking to deliver profitable business services, such as Layer 2, Layer 3, and MPLS VPNs, in a variety of bandwidths and with different SLAs. With flexible software options, the Cisco Catalyst 3750 Metro Series offers a cost-effective path for meeting current and future service requirements from service providers.
The standard Cisco Catalyst 3750 Series is an innovative product line for midsize organizations and enterprise branch offices. Featuring Cisco Systems® StackWise technology, Cisco Catalyst 3750 Series products improve LAN operating efficiency by combining industry-leading ease of use and high resiliency for stackable switches.
What is the Metro Ethernet positioning of the Cisco Catalyst 3750 Metro Series, the Cisco Catalyst 3550 Series, and the Cisco Catalyst 2950 Series?
Cisco Catalyst 3750 Metro Series Switches
=========================================
Cisco Catalyst 3750 Metro Series switches are a new line of premier, customer-located switches that bring greater intelligence for Metro Ethernet access, enabling the delivery of more differentiated Metro Ethernet services. These fixed configuration switches feature bidirectional hierarchical QoS and Traffic Shaping; intelligent 802.1Q tunneling; VLAN translation; MPLS, EoMPLS, and H-VPLS support; and redundant AC or DC power. They are ideal for service providers seeking to deliver profitable business services, such as Layer 2, Layer 3, and MPLS VPNs, in a variety of bandwidths and with different SLAs. With flexible software options, the Cisco Catalyst 3750 Metro Series offers a cost-effective path for meeting current and future service requirements from service providers.
Cisco Catalyst 3550 Series Switches
==================================
With a range of Fast Ethernet, Gigabit Ethernet, DC power, and fiber configurations, the Cisco Catalyst 3550 Series is an intelligent metro access switch for service providers serving the enterprise and small and medium-sized business markets. Featuring 802.1Q tunneling, high-performance IP routing, and subsecond Spanning Tree Protocol convergence, this line of powerful, cost-effective, fixed-configuration switches enables Metro Ethernet services such as Transparent LAN services and business-class Internet access.
Cisco Catalyst 2950 Series Switches
===================================
Ideal for Metro Ethernet access in residential markets, the Cisco Catalyst 2950 Series is an affordable line of fixed-configuration Fast Ethernet and Gigabit Ethernet switches. Featuring advanced rate limiting, voice VLAN support, and multicast management, these switches enable residential Metro Ethernet services such as Internet access, voice over IP (VoIP), and broadcast video.
Hope it helps
Ps rate this post if it helps u ..
Thanks and Regards
Raj

QoS on metro ethernet links

We recently got a metro ethernet link (45Mbps) between 2 of our offices.
Currently we do not have any QoS services from the provider on this link.
I want to implement QoS over this link. Should i treat this as a normal P2P link and do the QoS or should i also need to ask the SP to do some sort of QoS in their MEN.
Does it really matter to have the SP do QoS as well
Note:- I will be using the link purely as a L3 P2P link
Thanks in advance
Narayan

You would need the QOS on the MAN connect as well. Even though you are running a L3 P2P link you are traversing multiple L2 hops.
And where there may be contention by others traffic contending for the resources.
I believe in most cases your SP's 4 to 5 Classes would be good enough. Still you may want to understand his classes and also may want to negotiate the SLA terms.
Once this is taken care you can simply ask him to trust the incoming DSCP on the attachment circuit at his UPE.
You may also have to configure incoming DSCP trust on your Metro-CPE link which connects to you internal core routers.
HTH-Cheers,
Swaroop

Suggest No. of routers in a single metro-ethernet Vlan

Hi,
Just would like to know if there is a recommended no. of routers to put into a single metro-ethernet vlan. The local Metro-ethernet provider suggest 10 routers per vlan but I think 30-50 would be OK ?

This question is like how many nodes can you put into a VLAN. For an answer to be given your traffic types would need to be known. How chatty are your routers? Are you bridging? What type routing / bridging traffic (non-unicase) might you have on the wire? Baseline data from your environment is important to answer this question. There is no hard fast recommendation for this just as there is none for numbers of nodes in a VLAN or router is an OSPF area. This is completely dependant on your environment.
Hope this helps,
Don

Ethernet over Mains solution??

Hi All, at the moment my desktop PC is hardwired into the router but due to building work that needs to change, at least temporarily. So I’m thinking about Ethernet over Mains adaptors. While I’m doing it I would really like an adaptor by the TV. So I need three devices, one for the router, one for the TV and one for the desktop.
I know that these things don’t share surge adaptors and a few other things and I’m not quite sure about putting one on a standard extension lead, so I’m looking for adaptors with pass through mains.
If it makes a difference I already have a Devolo dLan 500 AVtriple+ on the way from Amazon that I ordered thinking it was a triple pack, not a single triple adaptor but £60+ I was expecting to get the solution for that not a single device. Also I don’t need them to be wireless and I only get 5mbps broadband and if I need a high volume transfer between devices, which is rare, I would be ok plugging into the router which is a home hub 2.
Having already messed up I am starting my research again but thought I would ask here in case somebody has already solved this or has any advice.
Thanks for any help.

Hi Thompson,
I have just set up a powerline network, using devolo devices.
So, basically you want to plug your router into a network device, so your internet connection can be shared remotely by your PC and your TV/Sky using ethernet cables? Devolo do three pack setups, in the following guises - the second option having powerline pass through connectors...
You could go for either this:
Devolo dLAN 500 Duo Network Kit
or this (power pass through):
Devolo dLAN 500 Duo Plus Network Kit
I am only stating devolo as I have knowledge of them, and are a piece of cake to set up - literally plug in and away you go, you don't even have to bother with the software that comes with them to monitor the network if you don't want to, although it is worth it as it will auto detect the firmware on the devices and let you know if there are updates available.
Devolos support seems pretty good as well, I am currently in the middle of a very extensive email exchange with their support team in Germany because i emailed them purely enquiring why I couldn't see a device on an old laptop using their software.They have been very helpful so far.
Dare I say it I would stick with the 500mbps as devolo no longer produces the 200 versions, although are still available from various outlets.
You could buy another make, getting a two pack and a third single adaptor, but I don't think there will be much difference in price when all told. At least with the above packs they are all in one box.
For additional information, I don't find these drop off in terms of speed that much. I have a device plugged in upstairs which is connected to my router, then I have a 500Av Triple + Wireless downstairs, into which is linked a slingbox and my sky box, and a wii connected wirelessly. The transfer speed between the two devices shows 494mbs, so a drop off of 6mbs. I also have an older 200 Av in another room, which shows a transfer speed of around 178mbs.
Hope the above helps.

VPLS and H-VPLS w.r.t Metro Ethernet

Can someone please explain me VPLS and H-VPLS as to how it can be used in a Metro Ethernet Environment????Any diagramatic explanation will be highly appreciable...
Regards,
NISHA

Thanks a lot for the presentations Harot...
As I'm a bit new to MPLS technology, I have some doubts in my mind so far Layer 3 VPNs are concerned. Let's consider a typical Scenario :
CE-->PE-->P-->P-->PE-->CE....
Could u pls tell me where MP-BGP runs (whether in PE to P or PE to CE b'coz somewhere i read the protocol used between PE-CE is MP-BGP and that's why I'm confused) and what is it's purpose. So far I know MP-BGP is run in order to make the VPNv4 routes unique i.e IPV4+VPNv4. I would highly appreciate ur feedback if u explain the layer 3 concept entirely protocol wise...i.e IGP, MP-BGP in a MPLS domain. What I know so far is CE-PE protocol can be anything right from static to BGP. P-PE is MP-BGP.
Kindly pl. correct me wherever I'm wrong...
Thanks in advance...
NISHA

Customer Equipment for Metro Ethernet Link

Hi All
It has been some time since I utilised Cisco network kit to provide private circuit point to point connectivity and I wonder if someone could give me a little guidence.
The customer is shortly to implement a new 100Mb Metro Ethernet link to connect two of their branches. They initially intend to use the link for data only traffic but eventually will want to route VOIP traffic across the link so bandwidth management and QoS will be essential components. It is unlikely that further links will be added to this link so built in expansion of the chosen routers may not be required.
Budget will be an issue on this so I would appreciate any advice or recomendations.
Thanks
J.

Hello James,
I think it would be better to get in touch with your Cisco Account Team as this question cannot be answered on a forum post.
Thanks,
Karim

Metro Ethernet over Docsis

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