BFD/4/hwBfdIPv6SessDown

Message

BFD/4/hwBfdIPv6SessDown: Session changes to DOWN. (Index=[Index], ConfigurationName=[ConfigurationName], BindIfIndex=[BindIfIndex], BindIfName=[BindIfName], Diagnosis=[Diagnosis], BindVrfIndex=[BindVrfIndex], BindVpnName=[BindVpnName], SessionType=[SessionType], BindType=[BindType], StaticLspName=[StaticLspName], PwSecondary=[PwSecondary], VcId=[VcId], VsiName=[VsiName], VsiPeerAddress=[VsiPeerAddress], DiscrAuto=[DiscrAuto], PeerIpv6=[PeerIpv6], Ipv6NextHop=[Ipv6NextHop])

Description

The BFD IPv6 session went Down.

Parameters

Parameter Name	Parameter Meaning
Index	BFD session ID
ConfigurationName	BFD session name
BindIfIndex	Bound interface index
BindIfName	Bound interface name
Diagnosis	Session diagnostic word 0: No diagnostic word 1: Detection time Down 2: Echo detection Down 3: Neighbor advertisement Down 4: Forwarding plane reset 5: Path Down 6: Cascading path Down 7: Administratively Down 8: Reverse cascading path Down 9: Peer administratively Down 25: IP error code stop 26: IP error code start 27: Section error code stop 28: Section error code start 29: LSP error code stop 30: LSP ingress error code start 31: LSP transit error code start
BindVrfIndex	Index of the bound VPN instance
BindVpnName	Name of the bound VPN instance
SessionType	Indicates the type of a session. 1: static, which indicates that the BFD session is statically configured. 2: Dynamic, which indicates that the BFD session is dynamically triggered. 3: Entire_Dynamic: indicates that a BFD session is dynamically triggered. After the function of passively creating a BFD session is enabled on the egress of the LSP, the BFD session is created. 4: Static_Auto: indicates a static BFD session with automatically negotiated discriminators.
BindType	Bound type: 2 or 3: Peer IP address (multi-hop IP link detection). 1 or 4: Interface (single-hop IP link detection). 9: LDP_LSP (LDP LSP detection). 11: TE_LSP (detection of the LSP bound to a TE tunnel). 12: TE_TUNNEL (TE tunnel detection). 13: PW (PW link detection). 15: VSI_PW (VSI PW link detection).
StaticLspName	Static LSP name The value is always -.
PwSecondary	Secondary PW flag. 1: primary PW. 2: secondary PW. 3: non-PW link.
VcId	VC ID
VsiName	VSI name
VsiPeerAddress	VSI peer address
DiscrAuto	Static auto-negotiation discriminator
PeerIpv6	Bound destination IPv6 address
Ipv6NextHop	Next hop IPv6 address

Possible Causes

Cause 1: The interface to which the session is bound went Down.

Cause 2: The peer BFD session was deleted or shut down.

Cause 3: The link went Down or was blocked, which Cause s a forwarding failure.

Procedure

1. Run the display interface command to check whether the physical state of the interface bound to the session is Up.

If yes, go to Step 2.
If no, go to Step 6.

2. Check whether the session state is automatically restored.

If yes, go to Step 6.
If no, go to Step 3.

3. Run the display bfd session all command to check whether the BFD sessions are deleted on the two ends.

If yes, go to Step 6.
If no, go to Step 5.

4. Run the ping ip-address command to check whether the link monitored by the BFD session is working properly.

If yes, go to Step 6.
If no, go to Step 5.

5. Collect log information and configuration information, and then contact technical support personnel.

6. End.