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Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
Chapter 32 IPv6 Support on the Cisco ASR 901 Router
How to Configure IPv6 Support on the Cisco ASR 901 Router
Refresh-In took 0 seconds
Sent Rcvd
Refresh activity: ---- ----
Refresh Start-of-RIB 0 1
Refresh End-of-RIB 0 1
Address tracking is disabled
Connections established 1; dropped 0
Last reset never
Transport(tcp) path-mtu-discovery is enabled
Graceful-Restart is disabled
Connection state is ESTAB, I/O status: 1, unread input bytes: 0
Connection is ECN Disabled
Mininum incoming TTL 0, Outgoing TTL 1
Local host: 2001:101::1, Local port: 57438
Foreign host: 2001:101::2, Foreign port: 179
Connection tableid (VRF): 0
Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)
Event Timers (current time is 0x4853F8):
Timer Starts Wakeups Next
Retrans 83 0 0x0
TimeWait 0 0 0x0
AckHold 83 81 0x0
SendWnd 0 0 0x0
KeepAlive 0 0 0x0
GiveUp 0 0 0x0
PmtuAger 10940 10939 0x485427
DeadWait 0 0 0x0
Linger 0 0 0x0
iss: 338855921 snduna: 338858128 sndnxt: 338858128 sndwnd: 15636
irs: 816933509 rcvnxt: 816935775 rcvwnd: 15571 delrcvwnd: 813
SRTT: 300 ms, RTTO: 303 ms, RTV: 3 ms, KRTT: 0 ms
minRTT: 0 ms, maxRTT: 300 ms, ACK hold: 200 ms
Status Flags: none
Option Flags: higher precendence, nagle, path mtu capable
Datagrams (max data segment is 1440 bytes):
Rcvd: 163 (out of order: 0), with data: 86, total data bytes: 2265
Sent: 167 (retransmit: 0 fastretransmit: 0),with data: 167, total data bytes: 8894
Verifying BFD for IPv6 Configuration
To verify the IPv6 Addressing Routing information, use the show bfd neighbors command in privileged
EXEC mode, as shown in the example.
Router# show bfd neighbors
IPv4 Sessions
NeighAddr LD/RD RH/RS State Int
101.101.101.2 6/5 Up Up Vl101
103.103.103.2 7/6 Up Up Vl103
150.150.150.2 2/1 Up Up Vl150
IPv6 Sessions
NeighAddr LD/RD RH/RS State Int
2001:10::2 16/14 Up Up Vl10