06-11-2006 02:58 AM - edited 03-03-2019 12:57 PM
Hi Guys,
I am facing a tunnel issue.I am trying to create a tunnel 6to4 tunnel using ipv6.When i executes sh ip interface tunnel0 i see the destiantion is unknown.The confgs are written below with the troubleshooting part also.
Router 1
ipv6 unicast-routing
interface s0/1
ip address 30.0.0.1 255.0.0.0
clock rate 1200
no shutdown
interface tunnel0
ipv6 enable
ipv6 address 2002:c0a8:6301::1/64
tunnel source serial0/1
tunnel mode ipv6ip 6to4
no shutdown
ipv6 route 2002::/16 tunnel0
R4
ipv6 unicast-routing
interface s0/1
ip address 30.0.0.2 255.0.0.0
no shutdown
interface tunnel0
ipv6 enable
ipv6 address 2002:c0a8:6301::2/64
tunnel source serial0/1
tunnel mode ipv6ip 6to4
no shutdown
ipv6 route 2002::/16 tunnel0
***********************************************************
Error
IER1#sh interfaces tunne
IER1#sh interfaces tunnel 0
Tunnel0 is up, line protocol is up
Hardware is Tunnel
MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation TUNNEL, loopback not set
Keepalive not set
Tunnel source 30.0.0.1 (Serial0/1), destination UNKNOWN
Tunnel protocol/transport IPv6 6to4
Fast tunneling enabled
Tunnel transmit bandwidth 8000 (kbps)
Tunnel receive bandwidth 8000 (kbps)
Last input never, output 00:04:28, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/0 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
6 packets output, 552 bytes, 0 underruns
06-11-2006 08:05 AM
This is actually a cosmetic bug since the destination address is not required for 6to4 tunnels.The packets are forwarded using the ipv4 address embedded in the ipv6 address of the incoming packets.
Hope this helps,
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