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NETMAN  2014

NETMAN 2014

Subject:

Re: Campus Network Plans

From:

Danny Eaton <[log in to unmask]>

Reply-To:

[log in to unmask]

Date:

Thu, 28 Aug 2014 09:39:58 -0500

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (143 lines)

Full blown L3VPNs.  

-----Original Message-----
From: Chuck Anderson [mailto:[log in to unmask]] 
Sent: Thursday, August 28, 2014 9:35 AM
To: Danny Eaton
Cc: [log in to unmask]
Subject: Re: [NETMAN] Campus Network Plans

For VRFs are you doing full-blown MPLS L3VPN or L2VPN or VPLS, or are you doing something different like trunking VLANs everywhere to transport each VRF or perhaps something else entirely?

On Thu, Aug 28, 2014 at 09:04:41AM -0500, Danny Eaton wrote:
> I’ll throw my info out to the general list, too.
> 
>  
> 
> Our current 10 year old design is 6500’s as core/aggregate distribution (for buildings with less than 3 closets)/distribution (for any building with 3 or more closets get a distinct pair of distribution routers) with 6500’s or 3750’s as access.  We just completed an evaluation of multiple vendors, and are in the process of settling the 3850’s and 4500’s for access and with ASR’s (9001/9904) as distribution, with CRS’s as core and Nexus 7k’s in the data centers.  We run MPLS with 10 or 11 (depending on if you count the native) VRF’s currently for network segmentation.  We’re looking to further segment out staff/faculty, as well as RESEARCH versus SCIENCE DMZ, etc.  This hardware gives us redundant 10 Gb uplinks from each access (whether 4500 or 3850), and a full 100 Gb core.  Cisco ISE will be utilized to move clients to the 802.1X authentication on wired, as well as help with onboarding devices to the wireless networks.  We’re using Juniper SRX’s (3600’s, and 5800’s) plus MX480’s for the border and as a firewall services block, with a pair of ASA’s for possible security group tagging transitions and VPN.  
> 
>  
> 
>  
> 
> From: The EDUCAUSE Network Management Constituent Group Listserv 
> [mailto:[log in to unmask]] On Behalf Of Dennis Bohn
> Sent: Thursday, August 28, 2014 8:50 AM
> To: [log in to unmask]
> Subject: Re: [NETMAN] Campus Network Plans
> 
>  
> 
> We are upgrading our distribution layer now: Cisco4500X in some buildings, 3650 in some small buildings, Juniper EX4550 and a Juniper access layer as a test.  We have really like having the capability of L3 connections from buildings to core, rather than a collapsed core, tho that can make sense too.  The 4500X switches are really fast, like them.  For small buildings these new 3650s that come with IP-Services without purchasing an additional license are a price point that can't be beat for a small L3 switch.  We have had some issues with the Juniper equipment, tho Junos is pretty neat once you get used to it.  
> 
> 10 gig uplinks to two Nexi, except some of the old fiber will only support 1 gig.  
> 
> Good Luck!
> 
> d.
> 
> 
> 
> 
> Dennis Bohn
> Manager of Network and Systems
> Adelphi University
> [log in to unmask]
> 5168773327
> 
>  
> 
> On Thu, Aug 28, 2014 at 8:55 AM, Patrick Dugan <[log in to unmask]> wrote:
> 
> We recently swapped out 6 Nortel/Avaya ERS8600's with a pair of Cisco 
> Nexus 7ks.  We've broken the 7k's into 3 VDC's each (Data Center, Core 
> and Perimeter) to act like our previous 6 devices.  Our distribution 
> is quickly moving to Cisco 4500x w/dual 10Gb connections back to the 
> core VDCs.  Our previous generation distribution consists of 
> Nortel/Avaya ERS5530 or ERS5632 w/ dual 10Gb connections back to the 
> core VDCs (both of these Avaya products have limited ARP capacity and 
> we're running into these limits quickly)
> 
> Thanks,
> 
> Patrick Dugan
> 
> Executive Director of Technology Infrastructure Systems Information 
> Technology Services Central Campus, Citizens (CZ)
> 704.330.6674
> www.cpcc.edu
> 
> We value your feedback. How is our service at CPCC?
> 
> 
> 
> -----Original Message-----
> From: Daniel Eklund [mailto:[log in to unmask]]
> Sent: Thursday, August 28, 2014 8:44 AM
> To: [log in to unmask]
> Subject: Re: [NETMAN] Campus Network Plans
> 
> Like Keith, we have a set of 4 Juniper MX960s in our core.  Bandwidth between the core nodes is 100G.  Our distribution layer is a tasteful collection of Cisco 6500s, 4500s, 3800s, etc.  We have most large buildings connected via 10G to the core with a redundant 10G or 1G to a second core node, and some of these have dual DLs.  Smaller buildings have dual 1G links and some small number of buildings only have 1 link.  At the AL we home run each switch to the DL at 1G to reduce oversubscription at the edge.
> 
> --
> Daniel Eklund
> Network Planning Manager
> ITS Communications Systems and Data Centers University of Michigan
> 734.763.6389
> 
> 
> On Wed, Aug 27, 2014 at 5:18 PM, Keith Jeremy Noah <[log in to unmask]> wrote:
> > We recently moved from Cisco 6509 routers, but we maintain some 
> > cisco 3750x switches at the edge.
> >
> >
> > We have moved to Juniper 960 for our core routers, mistakenly used 
> > juniper
> > 4500 EX for aggregation (do not do this, the ARP limit is too 
> > small), are now changing to juniper 5100 QFX for aggregation and 
> > juniper 4200px and 4200T for edge switches, with juniper 4200f for 
> > off-campus routing/aggregation.
> >
> >
> > This agg-edge combo allows us to make use of our soon to be 
> > installed singlemode fiber infrastructure for 10gig connectivity, 
> > which we aggregate to each switch for a potential total of ~20gig.
> >
> > As bandwidth needs increase we can add more aggregated links to 
> > handle the load.
> >
> > The Juniper 960s will also provide us with the ability to upgrade to
> > 100 gig service with the addition of a couple or very expensive line cards.
> >
> >
> > There are some minor Cisco/Juniper vlan 1/spanning tree issues you 
> > will need to sort out if you mix your environment, but we are quite 
> > happy with the end result.
> >
> >
> > Keith Noah
> > University Information Technology Services University of 
> > Wisconsin-Milwaukee Network Operations Center
> > 2025 Newport Ave. 7482A
> > Cell:414-810-6789
> > ________________________________
> > From: The EDUCAUSE Network Management Constituent Group Listserv 
> > <[log in to unmask]> on behalf of Entwistle, Bruce 
> > <[log in to unmask]>
> > Sent: Wednesday, August 27, 2014 3:02 PM
> > To: [log in to unmask]
> > Subject: [NETMAN] Campus Network Plans
> >
> >
> > We are currently in the process of planning for our next campus 
> > network infrastructure upgrade.  Our current infrastructure is a 
> > pair of Cisco 6509 core switches with redundant 1Gb links to all the 
> > buildings on campus, and at the edge are stacks of Cisco 3750 10/100 
> > switches.  Currently there is no distribution layer.  I was looking 
> > to see what other campuses are currently installing or planning to 
> > install, along with the associated inter-building bandwidth, to deal with the ever increasing amount of bandwidth required.

!DSPAM:911,53ff3e14301427265317847!

**********
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