[mrtg] cfgmaker truncating ifdescr descriptions at 64 characters?

[John Kemp]

So I used snmp query to verify this, to see what I get for ifdescr,
and it appears in all Title and PageTop sections of the ".cfg" produced,
cfgmaker (mrtg 2.8.11) has truncated these lines to 64 characters in length.
Anyone else seen this?  

Since our ifdescr descriptions are typically longer, I
want cfgmaker to blast out the whole description.
For example, here's an ifdescr for one interface:

     secret-gw - eth4/2 - 255.255.55.0/23 - 255.255.55.0/23 - Multibuilding (Bowerman, Esslinger, Mac Court, Upward Bound, ...)"

    ( I used snmpwalk -v 1 secret-gw public .1.3.6.1.4.1.9.2.2.1.1.28 )

In the config and obviously later in all the web pages, 
that ends up as this:

<TITLE>secret-gw - eth4/2 - 255.255.55.0/23 - 255.255.55.0/23 - Multibu</TITLE>

It looks like 64 characters truncation.  Looking at the script, cfgmaker,
I would guess something in this area???:

   237    my(%sifdesc,%siftype,%sifspeed,%sifadminstatus,%sifoperstatus,%sciscod
   237  escr);
   238  
   239    ### May need the cisco IOS version number so we know which oid to use
   240    ###   to get the cisco description.
   241    ###
   242    ### - mjd 2/5/98 (Mike Diehn) (mdiehn at mindspring.net)
   243    ###
   244    my ($cisco_ver, $cisco_descr_oid, @ciscodescr);
   245    if ( $ciscobox ) {
   246      ($cisco_ver) = ($sysDescr =~ m/Version\s+([\d\.]+)\(\d/o);
   247      $cisco_descr_oid = ($cisco_ver ge "11.2") ? "ifAlias" : "CiscolocIfD
   247  escr";
   248    }
   249  
   250  $session->map_table ([[1,3,6,1,2,1,2,2,1,1], # ifIndex
   251                        [1,3,6,1,2,1,2,2,1,2], # ifDescr
   252                        [1,3,6,1,2,1,2,2,1,3], # ifType
   253                        [1,3,6,1,2,1,2,2,1,5], # ifSpeed
   254                        [1,3,6,1,2,1,2,2,1,7], # ifAdminStatus
   255                        [1,3,6,1,2,1,2,2,1,8]], # ifOperStatus
   256  sub ($@) {
   257      my ($rowindex,$index,$ifdescr,$iftype,$ifspeed,$ifadminstatus,$ifope
   257  rstatus) = @_;
   258      grep (defined $_ && ($_=pretty_print $_),
   259            ($index,$ifdescr,$iftype,$ifspeed,$ifadminstatus,$ifoperstatus
   259  ));
   260      $sifdesc{$index} = $ifdescr;
   261      $siftype{$index} = $iftype;
   262      $sifspeed{$index} = $ifspeed;
   263      $sifadminstatus{$index} = $ifadminstatus;
   264      $sifoperstatus{$index} = $ifoperstatus;


???
Thanks in advance if anyone can spot the location of the limit.

John Kemp (kemp at ns.uoregon.edu)

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