[Bridge] Invalid BPDU transmission?
Rodolfo Giometti
giometti at enneenne.com
Tue Oct 5 02:54:58 PDT 2010
Hello,
in function STP_transmit_check_conditions (rstplib/transmit.c) the
case:
case IDLE:
if (!port->helloWhen) return STP_hop_2_state (this,
TRANSMIT_PERIODIC);
if (!port->sendRSTP && port->newInfo &&
(port->txCount < TxHoldCount) &&
(port->role == DesignatedPort) &&
port->helloWhen)
return STP_hop_2_state (this, TRANSMIT_CONFIG);
if (!port->sendRSTP && port->newInfo &&
(port->txCount < TxHoldCount) &&
(port->role == RootPort) &&
port->helloWhen)
return STP_hop_2_state (this, TRANSMIT_TCN);
if (port->sendRSTP && port->newInfo &&
(port->txCount < TxHoldCount) &&
((port->role == RootPort) || <----
(port->role == DesignatedPort)))
return STP_hop_2_state (this, TRANSMIT_RSTP);
break;
states that a RSTP bpdu can be transmitted even throught a RootPort
which, IMHO, is not correct... only topology change BPDU should be
sent over the RootPort. That's why I suggest to remove the line with
the arrow (<----).
Comments? :)
Ciao,
Rodolfo
--
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Linux Device Driver giometti at linux.it
Embedded Systems phone: +39 349 2432127
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