Dell PowerSwitch S4128F-ON OS10 Enterprise Edition User Guide Release 10.4.0ER - Page 476
Uplink Failure Detection, snmp-server host vrf, snmp-server location
View all Dell PowerSwitch S4128F-ON manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 476 highlights
snmp-server host vrf Configures a host to receive SNMP traps for the management VRF instance. Syntax Parameters Defaults Command Mode Usage Information Example snmp-server host {hostname | ipv4-address | ipv6-address} vrf management hostname | ipv4-address | ipv6-address - Enter either the name or IPv4/IPv6 address of the host. Not configured CONFIGURATION The no version of this command disables the host from receiving the SNMP traps. OS10(config)# snmp-server host 1.1.1.1 vrf management Supported Releases 10.4.0E(R1) or later snmp-server location Configures the location of the SNMP server. Syntax Parameters Default Command Mode Usage Information Example snmp-server location text text - Enter an alphanumeric string (up to 55 characters). United States CONFIGURATION The no version of this command removes the SNMP location. OS10(config)# snmp-server location datacenter10 Supported Releases 10.2.0E or later Uplink Failure Detection Uplink failure detection (UFD) indicates the loss of upstream connectivity to servers connected to the switch. A switch provides upstream connectivity for devices, such as servers. If the switch loses upstream connectivity, the downstream devices also lose connectivity. However, the downstream devices do not generally receive an indication that the upstream connectivity was lost because connectivity to the switch is still operational. To solve this issue, use UFD. UFD associates downstream interfaces with upstream interfaces. When upstream connectivity fails, the switch operationally disables its downstream links. Failures on the upstream links allow downstream devices to recognize the loss of upstream connectivity. This allows the downstream servers to select alternate paths, if available, to send traffic to upstream devices. UFD creates an association between upstream and downstream interfaces known as uplink-state group. An interface in an uplink-state group can be a physical Ethernet or fibre channel interface or a port-channel. An enabled uplink-state group tracks the state of all assigned upstream interfaces. The failure of upstream interfaces results in automatic disabling of downstream interfaces in the uplink-state group, as shown in the following illustration. By default, if all the upstream interfaces in an uplink-state group go down, all the downstream interfaces in the same uplink-state group are set into a link-down state. 476 System management