H3C Technologies H3C S12500 Series Switches - Manual (Page 407)

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IPv6 Session working under Ctrl mode:
Local Discr: 17 Remote Discr: 13
Source IP: 3001::3 Destination IP: 3000::1
Session State: Up Interface: Vlan-interface101
Min Trans Inter: 500ms Act Trans Inter: 500ms
Min Recv Inter: 500ms Act Detect Inter: 3000ms
Recv Pkt Num: 57 Send Pkt Num: 53
Running Up for: 00:00:06 Auth mode: Simple
Connect Type: Direct Board Num: 0
Protocol: BGP6
Diag Info: No Diagnostic
The output shows that a BFD session is established between Switch A's VLAN-interface 100 and
Switch C's VLAN-interface 101 and that BFD runs correctly.
# Display IPv6 peer information on Switch C.
display bgp ipv6 peer
BGP local router ID : 1.1.1.1
Local AS number : 200
Total number of peers : 2 Peers in established state : 2
Peer AS MsgRcvd MsgSent OutQ PrefRcv Up/Down State
2000::1 200 7 10 0 0 00:01:05 Established
3000::1 200 7 10 0 0 00:01:34 Established
The output shows that Switch A and Switch C have established the neighbor relationship.
# Display routes destined for 1200::0/64 on Switch C.
display ipv6 routing-table 1200::0 64 verbose
Routing Table :
Summary Count : 2
Destination : 1200:: PrefixLength : 64
NextHop : 3000::1 Preference : 255
RelayNextHop : 3001::2 Tag : 0H
Neighbor : 3000::1 ProcessID : 0
Interface : Vlan-interface101 Protocol : BGP4+
State : Active Adv Cost : 50
Tunnel ID : 0x0 Label : NULL
Age : 4538sec
Destination : 1200:: PrefixLength : 64
NextHop : 2000::1 Preference : 255
RelayNextHop : 2001::2 Tag : 0H
Neighbor : 2000::1 ProcessID : 0
Interface : Vlan-interface201 Protocol : BGP4+
State : Invalid Adv Cost : 100
Tunnel ID : 0x0 Label : NULL
Age : 4515sec
The output shows that Switch A and Switch C communicate through Switch B, and Switch C has
two routes to reach network 1200::0/64: Switch C<—>Switch B<—>Switch A, which is the