As many of you may know, I’m in the middle of a huge network redesign, last week our new firewalls finally arrived and it became time for us to start migrating services onto the edge network I’ve been building for the past couple months. Unfortunately, the first thing they wanted to move was a group of new proxy servers. Since they were already re-addressed and ready for the new infrastructure we figured some policy based routing (PBR) would do the trick until we were ready to flip the switch and change our default route to point out the new edge network.
I spent about a couple minutes writing up the configuration that we would need, nothing too complex. Since we planned out pointing the whole Vlan out the new infrastructure, I wrote 2 ACLs and a route-map that should’ve accomplished the following.
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Rather quietly, at least I never heard anything, on July 29th, Cisco released NX-OS Version 5.2(1) for the Nexus 7000 platform. (and the world rejoiced) This long awaited revision brings many new features to the 7k, one of those being MPLS support. (I’ll break the bad news to you now, it requires an additional license, so does FCoE. There is also a new SAN Enterprise License) But I digress, as I am upgrading my new (yet to be put into production redundant pair of 7010s) core to 5.2(1), I wanted to go down the list of new features that I find interesting…
- LISP — This is a hot topic right now, the session at Cisco Live ’11 was jammed packet with engineers chomping at the bit. Unforunately there are caveots here as well.. LISP functionality requires the use of the N7K-M132XP-12 or the N7K-M132XP-12L. LISP also requires the Transport Services Package license (N7K-TRS1K9).
- MPLS — In addition to basic MPLS support including LDP, Cisco is also offering IPv4/6 L3 VPNs, MPLS-TE, MPLS QoS, OAM, Multicast VPNs, and VRF route leaking.
- FCoE — Cisco requires the use of the N7K-F132XP-15 here. I’m not a storage guy, so I wont pretend to understand the details, but they’re also supporting storage VDC, and shared interfaces
- New OTV Features! — New features here include support for adjacency servers (allowing you to deploy without multicast enabled networks), IPv6 Clients (neighbor discovery via IPv6), Site Hardening (prevents accidental misconfigurations)
Looks like I’ve got less than 2 minutes left, time to wrap up!!
n7000-s1-dk220.127.116.11.bin 92% 142MB 124.5KB/s 01:41 ETA
Cisco has made a pretty serious leap forward with NX-OS, lets hope this continues in the future. For more information please see the NX-OS 5.2(1) release notes located at http://www.cisco.com/en/US/customer/docs/switches/datacenter/sw/5_x/nx-os/release/notes/52_nx-os_release_note.html
How many times a day do you issue a show command from configuration mode ? If you’re anything like me, its enough to get annoying. Luckily Cisco has given us the ability to user define aliases, here is a simple solution to this issue.
Router(config)#alias configure show do show
While this fixes part of the issue, you’ll need to configure additional aliases for each configuration mode that you wish to use this in. I would certainly at least setup interface and router. Are there any handy alises you use every day? Comment below to share them with us!
Update: I had to update this article to include another alias I’ve configured recently on our Nexus gear. NX-OS has eliminated the wr command to write memory, forcing you to use copy running-config startup-config or a shortened version like copy run start. Either way, I always forget at least once a day. Using the following alias we can restore that functionality!
N7K(config)#cli alias name wr copy running-config startup-config