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I'm familiar with UNI vs NNI. Almost all my projects are MetroE and MetroE-over-DWDM using Ciena gear. I've configured a Ciena MetroE switch similarly and it worked fine. The Ciena behaves differently. I didn't realize that Cisco downstream ports were UNI by default, and I haven't  read anything on the MEF-CECP study materials about pings being blocked on UNI ports.

This is where the RTFM comes in handy. Metro ethernet switches are not normal switches, they are much funkier.

I've done something similar to a Ciena ME switch and it worked fine, so I didn't think I'd run into any issues.  I was actually just helping somebody configure their 3400 and told them it should just take a few minutes.  One hour later...

TIL that, by default, all downstream ports on the 3400 are UNI ports and pings are dropped on UNI ports.  I had a PC connected to a downstream port.  I set up an SVI and tried pinging that but failed.  Disabled the firewall on the PC and that didn't work.  Tried a different cable, port, PC and it still didn't work.    Checked the ARP table on the PC and I can see the switch.  Checked the ARP table on the switch and I can see the PC.


Looked up the configuration guide for the switch and found that the switch has a Control Plane Security feature that drops ping on UNI ports by default.

You can advertise more specific routes for the small set of servers through Link A.  Then, you can advertise the /26 through both links but set a lower MED for the advertisements through Link B so that everything else goes through Link B.  All of these affect incoming traffic only.

Manipulating outgoing traffic based on source can be done with PBR, but I don't recommend it.  I try to avoid PBR at all cost except as a temporary solution.  If there's no need to manipulate outgoing traffic based on source, then I would stay away from it.  Use local pref instead to manipulate outgoing traffic based on destination.

Are you actually peered on both links?  Do you have two neighbor statements on each router?  One for each link.

LOL I feel your pain.  What is your rotation like?

I'm trying to spec out a UPS and Metered PDU for a project that will be deployed to several sites.  I have been comparing APC and Tripp Lite and the prices for Tripp Lite are much cheaper, but I only have experience with APC.

Do you guys run Tripp Lite or other vendors in your network, and would you recommend them?  What is support like as well?  I know APC is a pain to deal with when you're trying to RMA something.

E-mail chain with the security engineer of a customer:

Me: Please send me a copy of the routing table from your ASA.
Security Engineer: The ASA is a firewall, it's not a router.
Me: Yes I understand that but I have your configs and I see that you have OSPF configured.
Security Engineer: Ok, give me a few minutes.
*I get an e-mail 10 minutes later and it contained a screenshot of the GUI showing the interfaces and description.*
Me: That just shows the interfaces.  I need you to login to the ASA via the CLI and send me the output of "show route".
*I get an e-mail with the screenshot of their entire screen which includes the routing table as well as a Google search for how to view the routing table on an ASA via CLI."

Thanks!  Less hours and 56% raise eventually won me over.

Hi all.  I've been in IT for 4 years and  I currently work in Network Engineering/Design for an ISP.  I also do consulting work for smaller ISPs and mid-large size Enterprises.  I currently have a CCNP but it's going to expire at the end of the year.  I have been studying for the CCIE, and I'm looking to renew my CCNP with the written exam.  It's a bit difficult with a new baby, but I just accepted an offer for a new job that would mean less hours in the office.