welham.net

Sharing photo albums on Facebook

stevew — Sun, 20 Dec 2009 18:34:43 +0000

There is a Facebook group to rally support for this feature and a couple of related feature requests. ( request 1 | request 2)

Mumm Napa – Grapes

stevew — Sun, 19 Oct 2008 18:59:49 +0000

V+ set-top box with Hitachi 42PD9R10

stevew — Wed, 14 May 2008 21:05:06 +0000

To get a V+ set-top box remote doing volume and mute on a Hitachi 42PD9R10 (42″ plasma) follow the V+ instructions and use the remote code 0173

Sorting IP addresses using sort

stevew — Sat, 05 Apr 2008 12:38:42 +0000

Sort a list of IP addresses naturally by octet number: # sort -t. -k 1,1n -k 2,2n -k 3,3n -k 4,4n

Listing all maildir mailboxes in mutt

stevew — Sat, 29 Mar 2008 19:22:58 +0000

The following line of config, when added to Muttrc, will ensure that all Maildir directories in ~/Maildir are available to browse via the Mutt userinterface (using “c” or TAB): mailboxes echo -n "+ "; ls -ad ~/Maildir/.* | sed -e "s/^.*Maildir\/$[^\/]*$.*$/+\1/" -e "s/ /\\\\\\\ /g" | xargs

NPAD client on Solaris

stevew — Mon, 11 Feb 2008 18:22:43 +0000

NPAD is a tool to diagnose TCP performance issues. I hit the following issue when compiling the CLI client (diag-client.c) on Solaris 10 x86: cc diag-client.c -o diag-client Undefined first referenced symbol in file gethostbyname diag-client.o socket diag-client.o connect diag-client.o ld: fatal: Symbol referencing errors. No output written to diag-client Fixed linkage with cc -lsocket -lnsl -lm diag-client.c -o diag-client

Free(-ish) multicast traffic generator

stevew — Mon, 19 Nov 2007 22:11:03 +0000

Whilst working through labs for the BSCI CCNP exam (using the fantastic Dynagen / Dynamips) I came across the need for a multicast traffic generator. Googling showed me there was “MINT” but further investigation showed it didn’t do Windows, a little more faffing about with hping, nemesis and bittwist got me no closer.

Then I found a link which solved all my problems. I have the Windows Resource Kit and it does multicast generation. Magic. C:>mcast /intf:10.254.0.254 /send /intvl:1000 /numpkts:100000 /grps:224.1.1.1,224.2.2.2

Cacti with Cisco SAA

stevew — Fri, 04 May 2007 21:50:55 +0000

I contributed a standard deviation jitter graph to the excellent Cisco SAA graphing templates – these are extremely powerful if you’re lucky enough to have Cisco routers that support the function. I only wish I had the voice feature set so I could get the MOS/ICPIF scores.

Yet again I’m amazed at how good an application Cacti has become and how good the user community is.

Cisco SIP ALG

stevew — Fri, 04 May 2007 19:31:28 +0000

I stumbled across an issue with Cisco’s “NAT Support for SIP” feature today. Some very long SIP invites (actually spanning two packets as a SIP continuation) were being truncated. The 1420 byte initial packet was losing 15 bytes, the 72 byte continuation was unaffected. A “debug ip nat sip” showed the error:

IPNAT SIP SDP: End of line beyond end of buffer.

It doesn’t seem this buffer can be tuned so this behaviour appears to be buggy. Nothing on the Cisco bug toolkit so I’ve raised a TAC request.