Incoming ICMP fragment count : 0
=================================================================================
4
Clear all the 6rd counters using the clear cgn tunnel v6rd 6rd1 statistics command.
RP/0/RP0/CPU0:BR1#clear cgn tunnel v6rd 6rd1 statistics
Ping to BR Anycast Address
•
IPv6 Ping from RG to BR Anycast Address
etc/init.d/service_wan_ipv6 # ping 2001:B006:4010:1010::
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:B006:4010:1010::, timeout is 2 seconds:
PING 2001:B006:4010:1010::(2001:B006:4010:1010::)56 data bytes
64 bytes from 2001:B006:4010:1010::1 : seq=1 ttl=62 time=1.122 ms
64 bytes from 2001:B006:4010:1010::1 : seq=2 ttl=62 time=0.914 ms
--- 2001:B006:4010:1010:: ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
Reply will configure IPv6 unicast address as Src address (2001:B006:4010:1010::1).Note
RP/0/RP0/CPU0:BR1#show cgn tunnel v6rd 6rd1 statistics
IPv6 to IPv4
=============
Incoming packet count : 5
IPv6 ICMP
==========
Incoming packets count : 5
Reply packets count : 5
Enable Additional 6rd Features
•
Common 6rd IPv4 Prefix & Suffix Length
◦
IPv4 Prefix Length : This common prefix can be provisioned on the router and therefore need
not be carried in the IPv6 destination to identify a tunnel endpoint.
◦
IPv4 Suffix Length : All the 6RD CEs and the BR can agree on a common tail portion of the V4
address to identify a tunnel endpoint.
All the BR parameters have to be given in Single Commit.Note
•
p
•
6rd Tunnel TTL and TOS
◦
By default the IPv6 Traffic class and Hoplimit field will be copied to the IPv4 TTL and TOS fields
respectively. This default behavior MAY be overridden by above configuration.
◦
tos value is in decimal
service cgn demo
service-type tunnel v6rd 6rd1
tos 160
ttl 100
commit
Cisco IOS XR Carrier Grade NAT Configuration Guide for the Cisco CRS Router, Release 5.2.x
OL-32659-01 75
Implementing Carrier Grade NAT on Cisco IOS XR Software
Configuring IPv6 Rapid Development
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