Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 182
Disabling BFD for BGP, Enable BFD globally.
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session (other routing protocols) about the failure. It then depends on the individual routing protocols that uses the BGP link to determine the appropriate response to the failure condition. The typical response is to terminate the peering session for the routing protocol and reconverge by bypassing the failed neighboring router. A log message is generated whenever BFD detects a failure condition. 1 Enable BFD globally. CONFIGURATION mode bfd enable 2 Specify the AS number and enter ROUTER BGP configuration mode. CONFIGURATION mode router bgp as-number 3 Add a BGP neighbor or peer group in a remote AS. CONFIG-ROUTERBGP mode neighbor {ip-address | peer-group name} remote-as as-number 4 Enable the BGP neighbor. CONFIG-ROUTERBGP mode neighbor {ip-address | peer-group-name} no shutdown 5 Configure parameters for a BFD session established with all neighbors discovered by BGP. OR Establish a BFD session with a specified BGP neighbor or peer group using the default BFD session parameters. CONFIG-ROUTERBGP mode bfd all-neighbors [interval millisecs min_rx millisecs multiplier value role {active | passive}] OR neighbor {ip-address | peer-group-name} bfd NOTES: • When you establish a BFD session with a specified BGP neighbor or peer group using the neighbor bfd command, the default BFD session parameters are used (interval: 200 milliseconds, min_rx: 200 milliseconds, multiplier: 3 packets, and role: active). • When you explicitly enable or disable a BGP neighbor for a BFD session with the neighbor bfd or neighbor bfd disable commands, the neighbor does not inherit the BFD enable/disable values configured with the bfd all-neighbors command or configured for the peer group to which the neighbor belongs. Also, the neighbor only inherits the global timer values configured with the bfd all-neighbors command (interval, min_rx, and multiplier). 6 Repeat Steps 1 to 5 on each BGP peer participating in a BFD session. Disabling BFD for BGP You can disable BFD for BGP. To disable a BFD for BGP session with a specified neighbor, use the first command. To remove the disabled state of a BFD for BGP session with a specified neighbor, use the second command. The BGP link with the neighbor returns to normal operation and uses the BFD session parameters globally configured with the bfd all-neighbors command or configured for the peer group to which the neighbor belongs. Bidirectional Forwarding Detection (BFD) 182
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-
1,179
-
1,180
-
1,181
-
1,182
-
1,183
-
1,184
-
1,185
-
1,186
-
1,187
-
1,188
-
1,189
-
1,190
-
1,191
-
1,192
-
1,193
-
1,194
-
1,195
-
1,196
-
1,197
-
1,198
-
1,199
-
1,200
-
1,201
-
1,202
-
1,203
-
1,204
-
1,205
-
1,206
-
1,207
-
1,208
-
1,209
-
1,210
-
1,211
-
1,212
-
1,213
-
1,214
-
1,215
-
1,216
-
1,217
-
1,218
-
1,219
-
1,220
-
1,221
-
1,222
-
1,223
-
1,224
-
1,225
-
1,226
-
1,227
-
1,228
-
1,229
-
1,230
-
1,231
-
1,232
-
1,233
-
1,234
-
1,235
-
1,236
-
1,237
-
1,238
-
1,239
-
1,240
-
1,241
-
1,242
-
1,243
-
1,244
-
1,245
-
1,246
-
1,247
-
1,248
-
1,249
-
1,250
-
1,251