Hey Dude, "tunnel mode gre ipv6" carries IPv4 packets over IPv6 networks, to carry IPv6 over IPv4 networks you need the "tunnel mode gre ip" command.
tunnel mode gre <-- with the "ip" keyword you can carry different types of traffic over IPv4 networks (ike IPv6), with "ipv6" keyword it's the reverse tunnel mode ipv6 <-- Carries IPv4 packets across IPv6 networks tunnel mode ipv6ip <-- Carries IPv6 packets over IPv4 networks (6to4, isatap, etc) HTH Thank you, Steve E. Di Bias | Network Engineer CCNP (R&S), CCNA (R&S/Security), FNCNE, BCNE, CE|H, CCA, MCSE, MCSA, MCTS, MCITP, A+, Net+ Valley Health System | www.valleyhealthsys.com Direct: 702-369-7594 | Mobile: 702-241-1801 Email: [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of marc abel Sent: Sunday, July 31, 2011 8:22 AM To: [email protected] Subject: [OSL | CCIE_RS] IPV6 GRE tunnel I am trying to establish an IPV6 GRE tunnel and the only way I can get it to work is if I have a valid IPv6 source and destination. Is it not possible to tunnel GRE ipv6 over IPv4? I realize you can do an ipv6ip and make this work. I guess I am a bit confused, what are the differences between tunnel mode gre tunnel mode ipv6 tunnel mode ipv6ip Thank you, Marc _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com UHS Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient (s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution of this information is prohibited. If this was sent to you in error, please notify the sender by reply e-mail and destroy all copies of the original message. _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
