SONET Metro Ethernet questions

I was wondering if anyone has had a good/bad experience deploying and working with Metro Ethernet technologies since it is fairly new. I'm planning onto linking a large office 40 miles away to my central office and considered this and PPP OC3 as 2 top choices, I was told I will be able to extend my LAN without any additional hardware, anyone can share their thoughts? reliability?

Hi,
I think it would be better to include Cisco Account Manager/SE for this upgrade, they can guide you better and can come up with LLD for this upgrade, otherwise upgrading your 17 sites without proper planning can cause you serious issues.
Yasir

Similar Messages

  • 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.)

  • Metro Ethernet implementation questions

    I am planning a Metro Ethernet upgrade for a network I manage. This is the first time I’ve implemented Metro on any network. I’m looking for some suggestions and answers to a couple questions regarding this upgrade.
    The current network is Hub and spoke connected by copper lines to 17 different locations from a DS3 @ our HQ. HQ also has a DS3 to the internet which the branch locations go out for internet. At our branches we have a private and public network on different subnets. Each branch location has either a T1 or bonded T1 connected to a Cisco 2801 router then to Netgear PoE managed switch(s).
    The upgrade of the DS3 for internet is going to 100 meg. The data side will also be 100meg at HQ, 10meg to our small locations and 100meg to the large.
    My question is what do I need to be aware of on our existing network that must change to get this working?
    1)      Will I simply go from the layer2 Metro Switch to our router?
    2)      Should I remove the router and go directly to the Netgear switch?
    3)      Do I need to VLAN the private and public networks?
    4)      Do I need to change routing tables?
    Thoughts and/or suggestions welcome.
    Let me know if more information is required to assist in answers.
    Thanks

    Hi,
    I think it would be better to include Cisco Account Manager/SE for this upgrade, they can guide you better and can come up with LLD for this upgrade, otherwise upgrading your 17 sites without proper planning can cause you serious issues.
    Yasir

  • 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.

  • 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

  • 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

  • Comcast Metro Ethernet Setup

    We have one customer with one ASA and one 3750 switch in headquater. 6 1801 Routers in 6 branches.
    All connected via MPLS/BGP provided by ATT. And it was terminated at one port on 3750.
    We plan to replace that with Metro Ethernet Hub/Spoke topology since the customer mentioned each office never talks to each other. Later on we found they have IP phones do need to talk with each other at branches.
    Question - can we still use the MetroE service but configure routing to make each office talk with each other and how that would work?? I would assume some routings on 3750.
    Any info is appreciated. thanks!
    Ben

    Hi Ben,
    It will work for sure since this is what ( in a much more complex scenario) we are implementing in our company since ab few months. Just take care of defining data and voice subnets as technically unrelated so to be free implementing very flexible and easy to manage routing policies. Is ATT providing L3VPN or what?
    Hope to help
    Alessio
    Sent from Cisco Technical Support iPad App

  • Metro ethernet, Ethernet protection ring.

    Hi everybody.
    I hope everybody is doing great.    A quick question for you guys.
    Let say we have Ethernet switches connected in a ring .We want to use Ethernet protection ring for loop avoidance and faster convergence.
    One of the switch will be RPL owner, and of the link in our ring will be chosen as RPL link.
    1)My question is what is the criteria for RPL owner selection and RPL link?  (  For e.g  in STP, we use lowest bridge priority for root bridge)
    2)  Is Ethernet protection ring provide an alternative to stp when we switches connected in ring toplogy  and fast convergence is required as is the case with metro ethernet commonly ?
    Have a great evening.

    Dear Friend
    If you want to deploy and use L2 VPN service you should
    define whst is he type of core
    do you want to use L2 VPN service based on IP or MPLS?

  • Metro Ethernet 3550 IOS

    Hello,
    Just a basic question:
    Is there an recommended IOS version for a Cat 3550 acting as a U-PE in a Metro Ethernet implementation?
    Thanks!

    The Catalyst 3550 will now provide limited support for Policy Based Routing (PBR), while Catalyst 3550 Metro Ethernet users can benefit from Layer 2 Tunneling Protocol enhancements, which allow configuration of drop and shut-down thresholds based on ingress packet rates.
    http://www.cisco.com/en/US/products/sw/iosswrel/ps1833/prod_bulletin09186a008014eed1.html

  • Help with setting up Metro Ethernet

    Can someone please help and give suggestions and possible configuration options for setting up metro ethernet in the following senario:
    Will be setting up ME between headquarters and three remote branch offices. Each remote branch will be provisioned to 10MB, and the headquarters will have one link for the aggregate provisioned to 30MB.
    My questions, we will have routers at the remotes, but how will this terminate at the headquarters? Do we connect the one ME aggregate connection to a router, or to a L3 switch? And how do you configure the headquarters devices to separate the traffic? Do you use sub interfaces like in frame relay? Please provide a sample config if possible.
    Thanks

    HI,
    Assume you have 3560 SW at your HQ and where you can terminate the ME circuts.
    Configuration in Switch as:
    3560SW#sh run int Fa0/5
    Building configuration...
    Current configuration : 123 bytes
    interface FastEthernet0/5
    description ***************
    switchport access vlan 40
    switchport mode access
    end
    Create a SVI interface at the Router, the configuration is as:
    7604-Backbone-RTR#sh run int Vl40
    Building configuration...
    Current configuration : 119 bytes
    interface Vlan40
    description *********
    ip vrf forwarding 1234-NAME-MESH
    ip address xx.xx.xx.xx 255.255.255.252
    end
    In the above configuration, VRF is applied on Interface to make the pefix unique across the Backbone.
    is it here at the remotes where I will configure the "sub-interfaces"?
    A. Yes, the case for remote is same as that of HQ.
    Pls Rate if HELPS
    Best Regards,
    Guru Prasad R.

  • 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

  • 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

  • Best way to detect failure in Metro ethernet networks

    Hello ,
    I am working for a well known provider and I am currently migrating one of my client from Frame-relay to Metro-ethernet link .
    I am actually looking for advices on what sort of mechanism to implement to detect a failure in the ME parth .
    As you probably know , failure on one of the links might cause the CE-SWITCH-PE interfaces to stay up/up and the network will not neceseraliy start converging .
    So far I have implemented BFD along with IP SLA route tracking , I am happy with BFD but the IP SLA is acting "weird" .
    - IP SLA ICMP tracking rely on ICMP packets and was too sensitive to packets lost
    - We switched to ip route sla tracking but I am still unsure about the best way to use or implement this .
    Is there some sort of best practices available somewhere for this ?
    thanks ¨
    T

    Hello Thomas,
    From what i have seen BFD is best bet as it allows to relax the L3 protocols timers ( BGP / any other protocol used between CE- PE ). Another option is to have gre tunnel between the PE - CE link and track this tunnel interface.
    Regards,
    Shreeram

  • Alerts for metro ethernet link

    Hi,
    Kindly let me know " How to enable alerts for metro ethernet link"
    Thanks..

    Hello Gureshi,
    they are probably referring to OAM, CFM and other mechanisms to detect link or service failure in metro ethernet scenarios
    see
    http://www.cisco.com/en/US/docs/switches/metro/me3400e/software/release/12.2_52_se/configuration/guide/swoam.html
    Hope to help
    Giuseppe

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