Dear Yusuke, The topology which i have created is comprised of only *OVSSwitch* class. Now the *legacy nodes* which i have created have a *failmode attribute* value of *standalone* and they are not connected to the controller. As per the *tcpdump* used I noted that when the packet reaches from OpenFlow switch to legacy switch of the same class its not able to forward it.
An example has been depicted in the attached file below. With Regards Mir Wajahat Hussain On Thu, Jun 13, 2019 at 11:11 AM Yusuke Iwase <iwase.yusu...@gmail.com> wrote: > Hi, > > What does "legacy node" exactly mean? Cisco switch or Linux machine? > > As far as I know, some switches including Linux bridge do not transplant > LLDP packets for a loop prevention mechanism. Please confirm which switch > or node drops the packets first. > > Thanks, > Iwase > > > 2019年6月13日(木) 1:58 Wajahat Hussain Mir <mir.wajahat.huss...@gmail.com>: > >> Hi, >> >> I have a query pertaining to *LLDP* (*ether-type = 0x88cc)*. When an >> *OpenFlow* switch forwards *LLDP* packet to a *legacy node* why the >> legacy node is unable to forward it. Is it because of non understanding of >> the protocol or is it on account of *TTL *field in the LLDP frame. >> >> Any help will be highly appreciated. >> >> >> >> >> >> >> >> With Regards >> Mir Wajahat Hussain >> _______________________________________________ >> Ryu-devel mailing list >> Ryu-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/ryu-devel >> >
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