Specifications

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Cisco SN 5428-2 Storage Router Software Configuration Guide
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Chapter 11 Maintaining and Managing the SN 5428-2 Storage Router
Managing CDP on the SN 5428-2 Storage Router
Once the failover is complete, establish a management session to Sys1 and verify—using the
show scsirouter command—that instances, scsi1, scsi2, and scsi3, are now running there.
Note Because scsi3 has no primary setting, it will remain running on Sys1 until it is explicitly stopped or failed
over, or until it is automatically failed over by HA because of an interface failure or an unfavorable target
resource comparison.
Managing CDP on the SN 5428-2 Storage Router
Cisco Discovery Protocol (CDP) is primarily used to obtain protocol addresses of neighboring devices
and to discover the platform of those devices. CDP is media- and protocol-independent and runs on all
Cisco-manufactured equipment including routers, bridges, access servers, and switches.
Each device configured for CDP sends periodic messages, known as advertisements, to a multicast
address. Each device advertises at least one address at which it can receive SNMP messages. The
advertisements contain time-to-live, or holdtime, information, which indicates the length of time a
receiving device should hold CDP information before discarding it. Each device also listens to the
periodic CDP messages sent by others in order to learn about neighboring devices and determine when
their interfaces to the media go up or down.
The storage router is enabled, by default, to exchange CDP information with other CDP-enabled devices
in the network. CDP can be enabled or disabled for individual interfaces on the storage router, and the
holdtime for receiving devices and the frequency of CDP transmissions from the storage router can be
modified.
Disable CDP for Selected Interfaces
CDP can be enabled or disabled for the storage router management, HA, and Gigabit Ethernet interfaces.
By default, all interfaces are enabled for CDP. Use the following procedure to disable CDP for an
interface.
Command Description
Step 1
enable Enter Administrator mode.
Step 2
show cluster
or
show scsirouter scsi3 brief
Verify that the SCSI routing instance to be moved is indeed
running on Sys2.
Step 3
failover scsirouter scsi3 to Sys1 Failover the desired SCSI routing instance, scsi3, to Sys1.
Command Description
Step 1
enable Enter Administrator mode.
Step 2
no cdp interface ge2 enable Disable CDP on the desired interface (ge2).
Step 3
show cdp interface Confirm that CDP is disabled for the interface.
Step 4
save system bootconfig (Optional) Save the CDP change to the storage router bootable
configuration.