Cu capu' in nori

Hello

Today I installed the latest Debian release, version 6. I was a Debian 5 user when was up to date at the time, then I switched to Ubuntu because it provides updated packages. What I like about Debian is the simplicity: Ubuntu has become to automated. I prefer a clean linux distribution.

I work mostly on remote systems via ssh. I wondered why I have to wait so long for a login prompt and the answer came from an old ubuntu forum [1]. It was the /etc/nsswitch.conf file that had to be modified not to use the avahi multicast dns service. The hosts line should look like this: hosts: files dns.

[1] http://ubuntuforums.org/showthread.php?t=574818

Well, now that IANA is out of IPv4 addresses it’s time to consider migrating the infrastructure to IPv6 to have a dual stack or at least try to test the network devices if they are IPv6 ready.

Lately we received a /56 prefix for NCIT Cluster at out Faculty. We were excited at the beginning, but after we tried to deploy an IPv6 network thing weren’t that excited. Servers where ok, the linux operating system has a good IPv6 implementation, the problem was at the network equipment: Cisco routers.

The main router is a Cisco 4948 layer 3 switch which I think is has a buggy IPv6 stack. From the router I am able to ping ipv6.google.com but only if the IPv6 network is directly connected. If I add a second router, basically there are 2 routers in cascade, no mater what routes I add on the Cisco the packets aren’t routed behind the Cisco 4948 to the second router. If the networks were added as vlan interfaces directly on the main router, the routing processes goes smooth, but when it comes to static routing, the routing table is just a table.

So looks like our old Cisco 4948 router is not fully capable of doing real IPv6 work. May be a firmware upgrade will fix that, how knows because the update isn’t that new.

UPDATE:

In cele din urma a functionat. Am refacut toate configuratiile de pe echipament legate de IPv6 si acum merge rutarea fara probleme.