cisco
Stop IPv4 Point-To-Point Addressing your Networks
<p>IPv4 addressing on links is no longer required to route IPv4. What you say?? Yes, you can stop IPv4 addressing your point to point links with <em>Legacy IP</em> and route your IPv4 addressed packets via IPv6 next hops!</p> <ul> <li>With this we can save Public IPv4 addressing!</li> <li>We now only need a Public IPv4 loopback […]
IPv6 + Flow labels
Recently a teammate and I have come across a frame forwarding issue with ECMP on a hardware ASIC in a device I work on where the use of Flow labels are used in the ECMP hash. This was interesting as we found iperf was not setting the Flow label at all, unless you specify the -L […]
NXOS Simple IPv6 BGP Peering
It took me far to long to find out how to config this, so I’m sharing it to be more searching on the Internets. Scenario: – NXOS BGP ‘upsteam’ / ‘north bound’ peer sharing the default route only – Linux box runs Quagga sharing it’s /56 routable behind it Nexus Conf feature bgp router bgp […]
IPv6 Tacacs+ Support (tac_plus)
Recently @ Facebook we found that we required IPv6 access to TACACS for auth (AAA) for the majority of our production Network Equipment. Tacacs+ (tac_plus) is an old daemon released by Cisco in the late 90s. It still works (even at our scale) and the config was doing what we required, so it was decided that we […]
Junos Aggregated Ethernet w/LACP and Cisco Nexus Virtual Port Channel
So when I was googiling around looking for working configurations of Junos (EX in this case) AE working with a Cisco vPC (Virtual Port Channel) I could not find any examples … So I said that I would post one. I will not be covering how to set up a VPC, if you’re interested in […]
30 Levels of NAT Firewall Lab
So I am a very large geek, and proud of it. It hurt to walk past a cupboard at work knowing there was 30+ Cisco PIX 501 firewalls sitting in there collecting dust. One day it dawned on me, I wonder how crap internet would be sitting behind 30 of those slow ass god awful […]
Cisco Acknowledges AJ2010 Network
Awesome stuff. Was a lot of kit rolled out @ the Cataract Scout Park by Alan, Brett, Colin, Todd and myself – Plus many many others ! Good to see the kit was well used for quality videos like: [youtube https://www.youtube.com/watch?v=4BLvT12CPrQ&hl=en_GB&fs=1&] More info: http://blogs.cisco.com/news/comments/cisco_helps_the_22nd_australian_scout_jamboree_reach_new_digital_heights/
Maxing out Gig Ethernet with Sun x4500 Thumpers
Well the time has come where I have finally got some hardware that can max out gig ethernet. I sent 3.4 tb in 9 hours! Thats awesome! GG Cisco 3750 and 2 x Sun x4500 Thumpers running Opensolaris snv_105. Good times – I bet the copper was warm 🙂 root@dumper1:sbin> ./zfsMbufferInitialSend.sh Starting ZFS send to […]
Solaris 10 + Jumbo Frames + Link Aggregation with Cisco 3750 Switch + NFS Exporting / Mounting
Do you want to get the most out of our x4500 network throughput with NFS. Read away if you do.