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Replacing cEdge in Cisco SDWAN environment

July 09, 2024 , ,

Replacing cEdge in Cisco SDWAN environment 

Replacing the cEdge router with another cEdge through an RMA process for Cisco SDWAN , we need to put the basic configuration on the new RMA router and should be reachable via vManage. It is important that you should know the new router serial number should be learned to vManage NMS.

Replacing cEdge in Cisco SDWAN
Fig 1.1- Replacing cEdge

Here are the steps below :

Step 1: Make sure your new RMA device is compatible with the vManage/vSmart Controller versions else it will not support. 

Step 2: Add the bootstrap configuration on the cEdge router with the following as under "system" as shown below

C8000-NDNA# Config-transaction
C8000-NDNA(config)# system
C8000-NDNA(config-system)# system-ip 10.10.10.1
C8000-NDNA(config-system)# site-id 2000
C8000-NDNA(config-system)# organization-name NDNA-111
C8000-NDNA(config-system)# vbond 123.11.23.12
C8000-NDNA(config-system)# exit
C8000-NDNA(config)# exit
C8000-NDNA#

Step 3: Make sure System clocks that are properly configured on the cEdge and that are compatible with other devices/controllers in a SDWAN Fabric.

C8000-NDNA#sh clock
11:43:59.361 EDT Tue Jul 9 2024
C8000-NDNA#

Step 4: Now you need to configure one of the transport interface (VPN0) on the new RMA device with the tunnel interface as below:

C8000-NDNA# Config-transaction
C8000-NDNA(config)# interface GigabitEthernet0/0/1
C8000-NDNA(config-if)# description MPLS
C8000-NDNA(config-if)# ip address 10.20.20.26 255.255.255.252
C8000-NDNA(config-if)# no ip redirects
C8000-NDNA(config-if)# ip tcp adjust-mss 1360
C8000-NDNA(config-if)# arp timeout 1200
C8000-NDNA(config-if)# exit
C8000-NDNA(config)# ip route 0.0.0.0 0.0.0.0 10.20.20.25
C8000-NDNA(config)# interface Tunnel1 
C8000-NDNA(config-if)# ip unnumbered GigabitEthernet0/0/1
C8000-NDNA(config-if)# no ip redirects
C8000-NDNA(config-if)# ipv6 unnumbered GigabitEthernet0/0/1
C8000-NDNA(config-if)# no ipv6 redirects
C8000-NDNA(config-if)# tunnel source GigabitEthernet0/0/1
C8000-NDNA(config-if)# tunnel mode sdwan
C8000-NDNA(config-if)# exit
C8000-NDNA(config)# exit
C8000-NDNA#

Step 5: Configure the interface under "sdwan" as shown below to make a part of sdwan.

C8000-NDNA# Config-transaction
C8000-NDNA(config)# sdwan
C8000-NDNA(config-sdwan)# interface GigabitEthernet0/0/1
C8000-NDNA(config-sdwan)# tunnel-interface
C8000-NDNA(config-sdwan)# encapsulation ipsec weight 1
C8000-NDNA(config-sdwan)# color mpls
C8000-NDNA(config-sdwan)# allow-service all
C8000-NDNA(config-sdwan)# no allow-service bgp
C8000-NDNA(config-sdwan)# allow-service dhcp
C8000-NDNA(config-sdwan)# allow-service dns
C8000-NDNA(config-sdwan)# allow-service icmp
C8000-NDNA(config-sdwan)# allow-service sshd
C8000-NDNA(config-sdwan)# no allow-service netconf
C8000-NDNA(config-sdwan)# no allow-service ntp
C8000-NDNA(config-sdwan)# no allow-service ospf
C8000-NDNA(config-sdwan)# no allow-service stun
C8000-NDNA(config-sdwan)# exit
C8000-NDNA(config)#exit 
C8000-NDNA#

Step 6: Once to added the configuration, move MPLS link from old router to new router as same MPLS configuration is present on new ISR router. MPLS link will come up and you will be see the router is available on vManage.

Step 7: Now copy the device template and save it from the old router. Once done, Now in cert, move the old router from valid to staging and move the rest of the links from old router to new one.

Step 8: Now attached the device template on the new router and upload the saved file to that new router template, it will take all the parameters and values and push the configuration.

Step 9 : Once all configuration pushed, Check sdwan control connections and other configurations.

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