Dell Force10 C150 Configuration Manual page 200

Figure 9-26. Viewing Established Sessions for VLAN Neighbors
R2(conf-if-vl-200)#bfd neighbor 2.2.3.2
R2(conf-if-vl-200)#do show bfd neighbors
*
Ad Dn
C
I
O
R
V
LocalAddr
* 2.2.3.2
Changing session parameters
BFD sessions are configured with default intervals and a default role. The parameters that can be
configured are: Desired TX Interval, Required Min RX Interval, Detection Multiplier, and system role.
These parameters are configured per interface; if a configuration change is made, the change affects all
sessions on that interface.
Caution: When configuring BFD on VLAN or LAG interfaces on the C-Series, Dell Force10 recommends
a minimum value of 500 milliseconds for both the transmit and minimum receive time, which yields a final
detection time of (500ms *3) 1500 milliseconds.
To change session parameters on an interface:
Step Task
1 Change session parameters for all
sessions on an interface.
View session parameters using the command
page 179.
Disabling BFD for VLANs
If BFD is disabled on an interface, sessions on the interface are torn down. A final Admin Down control
packet is sent to all neighbors, and sessions on the remote system change to the Down state
page 179).
To disable BFD on a VLAN interface:
Step Task
1 Disable all sessions on a VLAN
interface.
200 | Bidirectional Forwarding Detection
- Active session role
- Admin Down
- CLI
- ISIS
VLAN BFD Sessions Enabled
- OSPF
- Static Route (RTM)
- VRRP
RemoteAddr
2.2.3.1
Interface State Rx-int Tx-int Mult Clients
Vl 200 Up 100
Command Syntax
bfd interval milliseconds min_rx milliseconds
multiplier value role active
[
show bfd neighbors detail
Command Syntax
no bfd enable
100 3 C
Command Mode
INTERFACE VLAN
passive
| ]
, as shown in Figure 9-8 on
Command Mode
INTERFACE VLAN
(Message 3 on