Re: [Ryu-devel] Query-on-LLDP

2019-06-13 Thread Yusuke Iwase
Hi, I faced the similar problem before and if I remember correctly, OVS drops the LLDP packets as the bridge mode in factions related to the STP (Spanning Tree Protocol). Sorry I forgot the detail for it, but the follow post seems to describe some points. https://www.dorm.org/blog/finally-a-worka

Re: [Ryu-devel] Query-on-LLDP

2019-06-13 Thread Wajahat Hussain Mir
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 O

Re: [Ryu-devel] Query-on-LLDP

2019-06-12 Thread Yusuke Iwase
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

[Ryu-devel] Query-on-LLDP

2019-06-12 Thread Wajahat Hussain Mir
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