SNMPGetTable get's the entries in the table pointed to by OID. In our case
OID= .iso.org.dod.internet.mgmt.mib-2.ip.ipRouteTable. The entries are
ipRouteTable.ipRouteEntry and elements are
ipRouteTable.ipRouteEntry.ipRouteDest, etc. To group elements in an
entry you drop the ipRouteDest,etc which is what fetch(row, '.') does.
If you want one line per route you'll need to a SNMPGetTable of
1.3.6.1.2.1.4.21.1 instead of 1.3.6.1.2.1.4.21.1.1. You'll get all the
elements per line (next hop, mask, etc.) but that is similar to the
"Routing table" tab in Getif. In other words: the ipRouteTable is made up of
ipRouteEntry's, not of ipRouteDest's.
So, SNMPGetTable gets you the table at OID (ie. entries below OID). What you
are looking for is a filter on replies starting with OID.
Ludo
-Message d'origine-
De : John Repucci [mailto:john.repu...@gmail.com]
Envoyé : vendredi 15 juillet 2011 03:36
À : Ararat Synapse
Objet : Re: [Synalist] RE : SNMPGetTable error?
I'm now using v4 and I have the same issue.
I added two routes to my test router: 10.0.0.0/32 & 12.0.0.0/8 and
SNMPGetTable returns both of them on one line as "10.0.0.0","12.0.0.0".
The above routes are clearly not default routes and they should not be
combined.
This appears to happen because SNMPGetList sets the index variable x to 0
for any route whose 2,3 & 4 octet's = '0.0.0' and the following code
combines routes thus identified into row 0.
The function row := separateright(oid, baseoid + '.');does return the
correct and full IP address, but after col := fetch(row, '.'); row only
contains the last three octets. Fetch appears to remove the 1st octet from
the string contained in "row".
"col" does not appear to be used.
If I comment out the col := fetch(row, '.'); line, SNMPGetTable works as
expected.
What is that line doing and does it need to be there?
Variable values for the 12.0.0.0 route
BASEOID: 0x5f0704 '1.3.6.1.2.1.4.21.1.1'
OID: 0x5b2f0 '1.3.6.1.2.1.4.21.1.1.12.0.0.0'
ROW 0x3b14b20 '0.0.0'
Network/MaskProtoAge Slot Cost NextHop Address AS
--- -- - - -
10.0.0.0/32 Static401 1 192.168.170.254
12.0.0.0/8 Static 41 1 192.168.170.254
192.168.170.128/25 Direct 125621 0 192.168.170.254
192.168.255.78/32 Direct 125621 0 192.168.255.78
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