Replacing S Series Switches with CE Series Switches
Networking Requirements
As shown in Figure 3-18, two S9300 switches function as aggregation switches and work in Virtual Router Redundancy Protocol (VRRP) backup mode. S9300-1 is the master switch, and S9300-2 is the backup switch. The switches connect to the Internet through an upstream router and connect to downstream access devices. The S9300 switches cannot meet service requirements on the live network through bandwidth expansion. Therefore, two CE12800 series switches are used to replace the S9300 switches.
Configuration Roadmap
The S9300 aggregation switches work in master/backup mode. Before the replacement, shut down the uplink and downlink interfaces on the backup switch. After services are switched to the master switch, replace the backup switch. After the backup switch is replaced and connected to the network, switch services to the backup switch and verify the services. If no problem occurs, replace the master switch. If any problems occur, stop the replacement operations, find the causes, and determine whether to continue the operations or perform a rollback.
- Check the current switch running status and save the check results.
- Save configurations of the two S9300s, and then shut down the uplink and downlink interfaces of S9300-2.
- Configure data for CE12800-2.
- Connect CE12800-2 to the network. Check whether the receive and transmit optical power of interfaces on the switch is normal and test link connectivity.
- Switch services to CE12800-2. Replace S9300-1 using the same method for replacing S9300-2.
- Verify whether the network connectivity and services are normal.
Procedure
- Check the current switch running status based on information
in the following table, and save the check results.
Table 3-3 Switch running status check items
Check Item
Command
Comparing running configurations and saving the configurations
<S9300> compare configuration
<S9300> display current-configuration
Checking the registration status of cards
<S9300> display device
<S9300> display device pic-status
Checking alarm information
<S9300> display alarm all
Checking the CPU and memory usage
<S9300> display health
Checking the running status of fans
<S9300> display fan
Checking the running status of power modules
<S9300> display power
Checking brief information about the status of interfaces
<S9300> display ip interface brief
<S9300> display interface brief
<S9300> display interface description
Checking detailed information about interfaces
<S9300> display interface
Collecting log information
<S9300> display log
Checking the OSPF neighbor status
<S9300> display ospf peer
Checking the IS-IS neighbor status
<S9300> display isis peer
Checking the BGP neighbor status
<S9300> display bgp vpnv4 all peer
Checking the LDP session status
<S9300> display mpls ldp session
Checking the LSP status
<S9300> display mpls lsp
Checking configuration information about VPN instances
<S9300> display ip vpn-instance
Checking route statistics in the routing table
<S9300> display ip routing-table statistics
Checking connectivity of direct links
Ping IP addresses of upstream, downstream, and peer devices.
- Save configurations of the S9300 series switches, and then
shut down the uplink and downlink interfaces of S9300-2.
<Quidway> system-view [Quidway] sysname S9300-2 [S9300-2] quit <S9300-2> save The current configuration will be written to cfcard:/vrpcfg.zip. Are you sure to continue?[Y/N] y Now saving the current configuration to the slot 7. Save the configuration successfully. <S9300-2> system-view [S9300-2] interface xgigabitEthernet 1/0/2 [S9300-2-XGigabitEthernet1/0/2] shutdown [S9300-2-XGigabitEthernet1/0/2] quit [S9300-2] interface xgigabitEthernet 1/0/3 [S9300-2-XGigabitEthernet1/0/3] shutdown [S9300-2-XGigabitEthernet1/0/3] quit
Ensure that XGE1/0/1 is in Up state so that services can be switched to the backup switch.
- Configure CE12800-2 based on the configuration file of
S9300-2.
Default configurations for some functions of the CE12800/CE12800E and S9300 series switches are different, therefore, loops may occur during replacement. You need to check whether the default configurations of the CE12800 and CE12800E series switches differ from those of the S9300 series switches based on the configuration manual of the S9300 series switches. Run the display current-configuration include-default command in any view of a CE12800 or CE12800E series switch to check its configuration file containing the default configurations.
- Connect CE12800-2 to the network and run the display
interface transceiver verbose command to check whether the
receive and transmit optical power on interfaces is normal, then ping
IP addresses of upstream, downstream, and peer devices to check link
connectivity.
<HUAWEI> display interface 10ge 1/0/3 transceiver verbose 10GE1/0/3 transceiver information: ... ------------------------------------------------------------------- Alarm information: LOS Alarm ------------------------------------------------------------------- Diagnostic information: Temperature (Celsius) :34.68 Voltage (V) :3.36 Bias Current (mA) :7.03 Bias High Threshold (mA) :10.00 Bias Low Threshold (mA) :2.60 Current RX Power (dBm) :-50.00 Default RX Power High Threshold (dBm) :1.50 Default RX Power Low Threshold (dBm) :-14.00 Current TX Power (dBm) :-2.22 Default TX Power High Threshold (dBm) :-1.00 Default TX Power Low Threshold (dBm) :-8.00 -------------------------------------------------------------------If the value of Current RX Power is between the values of Default RX Power High Threshold (dBm) and Default RX Power Low Threshold (dBm), the receive optical power is normal. Otherwise, check whether the remote optical module is normal or connects to an optical fiber properly. Similarly, if the value of Current TX Power exceeds the allowed range, the transmit optical power is abnormal. Check whether the local optical module is normal or connects to an optical fiber properly.
- Run the display vrrp command in any view of S9300-1 and the display vrrp verbose command in any view of CE12800-2 to check the VRRP status of S9300-1 and CE12800-2 respectively. The normal VRRP status of S9300-1 is Master, and that of CE12800-2 is Backup.
- Shut down the uplink and downlink interfaces of the master
switch S9300-1 so that services can be switched to the backup switch
CE12800-2. Check whether the VRRP status of CE12800-2 is Master.
<HUAWEI> display vrrp verbose Vlanif100 | Virtual Router 1 State : Master Virtual IP : 10.1.1.100 Master IP : 10.1.1.2 Send VRRP Packet To Subvlan : all PriorityRun : 120 PriorityConfig : 120 MasterPriority : 120 Preempt : YES Delay Time : 20 s Remain : -- TimerRun : 2 s ...
- Replace S9300-1 using the same method for replacing S9300-2. For details, see step 2 to step 6.
- After the replacement, check the following aspects:
Check link connectivity and whether IP addresses of upstream, downstream, and peer devices can be pinged.
Run the display interface transceiver verbose command to check whether the receive and transmit optical power on interfaces is normal.
Run the display device command to check the registration status of cards.
Run the display alarm all and display logbuffer commands to view alarms and logs. Compare the alarms and logs with those before the replacement, and check whether new alarms and logs are generated.
