Update on ipv6 labs  

Sunday, December 21, 2008

ipv6 labs are done.. there were few new concepts apart from ts and cbt ..the tunnels .. neverthless attempted and these labs are not like the usual one .. its as simple as configuring the ipv4 address .. so there is nothing to explain nor to post configs .. here are few important concepts on tunnels ..


r1#config t
Enter configuration commands, one per line. End with CNTL/Z.
r1(config)#ipv6 multicast-routing
r1(config)#int tunnel10
r1(config-if)#tunnel mode
*Mar 1 00:26:46.847: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel10, changed state to down
r1(config-if)#tunnel mode ?
aurp AURP TunnelTalk AppleTalk encapsulation
cayman Cayman TunnelTalk AppleTalk encapsulation
dvmrp DVMRP multicast tunnel
eon EON compatible CLNS tunnel
gre generic route encapsulation protocol
ipip IP over IP encapsulation
ipsec IPSec tunnel encapsulation
iptalk Apple IPTalk encapsulation
ipv6 Generic packet tunneling in IPv6
ipv6ip IPv6 over IP encapsulation
mpls MPLS encapsulations
nos IP over IP encapsulation (KA9Q/NOS compatible)
rbscp RBSCP in IP tunnel

r1(config-if)#tunnel mode ipv6ip
r1(config-if)#tunnel source ?
A.B.C.D ip address
Async Async interface
BVI Bridge-Group Virtual Interface
CDMA-Ix CDMA Ix interface
CTunnel CTunnel interface
Dialer Dialer interface
FastEthernet FastEthernet IEEE 802.3
Lex Lex interface
Loopback Loopback interface
MFR Multilink Frame Relay bundle interface
Multilink Multilink-group interface
Null Null interface
Port-channel Ethernet Channel of interfaces
Serial Serial
Tunnel Tunnel interface
Vif PGM Multicast Host interface
Virtual-PPP Virtual PPP interface
Virtual-Template Virtual Template interface
Virtual-TokenRing Virtual TokenRing
X:X:X:X::X IPv6 address
XTagATM Extended Tag ATM interface
vmi Virtual Multipoint Interface

r1(config-if)#tunnel source serial0/0 ?

r1(config-if)#tunnel source serial0/0
r1(config-if)#tunnel destination ?

r1(config-if)#tunnel destination
r1(config-if)#ipv6 addr fec0::12:2/112

do it on the other side of the router you should see the connectivity .. iam going into a comparison which is right or wrong .. but these are very much similar to ospf virtual links ... you can have connectivity without connectivity .. did i say anything ????

any ways author of the lab guide compare them to loopbacks .... so all in all its simple .. configure a tunnel , include source and destication and bingo ..
and never ever forget the ipv6 unicast-routing ..its damn horrible and you will go nuts like me .!!!! missed one packet .... hehe


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