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Dear All,The penultimate para in Section 3, Page 6 of 6PE RFC 4798 states the following: "Otherwise, routers in the IPv4 MPLS network have the option to generate an ICMP "Packet Too Big" message using mechanisms as described in Section 2.3.2 .... of ...
Hi All,I need some info on the following 6PE scenario.The 6PE rfc states that second label must be used. Though I understand the above condition in a penultimate hop popping scenario, I am not clear about it when PHP is not involved. When PHP is not ...
Hi All,802.1ag defines and classifies MEP as 'Down MEP' and 'Up MEP' where as Y.1731 doesn't classify MEPs. How will be the implementation when a device supports both 802.1ag and Y.1731 standards? Can we assume the MEP in Y.1731 implementation always...
Hi,I am interested in knowing how Q in Q concept will be applicable in CFM. Will the CFM messages be tagged with C-VLAN and S-VLAN tags or Q in Q is applicable only for the frames containing data?Thanks in advance.Sriram K
Hi,Going through the Draft 8 of IEEE 802.1ag, I came across Down MEP and Up MEP. The draft defines Up MEP as "A MEP residing in a Bridge that transmits CFM PDUs and receives them from, the direction of the Bridge Relay Entity" and Down MEP as "A MEP ...
Thanks Harold. The router generates ICMP "Packet Too Big" message When the IPv6 data packet's length exceeds the MTU. There is a possibility of ICMP "Packet Too Big" message size exceeding the interface MTU (if the IPv6 payload itself is more than th...
Harold,Thanks for your reply.My doubt is, if the PHP doesn't take place and the top label is not a explicit-null label (e.g. label value = 30), will the 6PE router still be popping the top label (with value = 30) and look in to the next label (label ...
Thank you very much for the replies. That was very helpful.So, I believe the last hop label must be either implicit null or explicit null. Any other label value in the last hop will not work, since the egress 6PE will be forwarding a labeled (IPv6 pr...
Thanks for your reply. I think I wasn't clear enough. By the terms "Up MEP" and "Down MEP", I meant the direction of the MEP and not the state. In cisco's terms Up MEP = Inward facing MEP(MAC Relay entity side transmission) and Down MEP = Outward fac...
