Configuring IPv6 route preferences

Before you begin

Important

Changing route preferences can affect system performance and network accessibility while you perform the procedure. Change a prefix list or a routing protocol before you activate the protocols.

1. Enter either Global Configuration mode or VRF Router Configuration mode for a specific VRF context:

   enable

   configure terminal

   Optional: router vrf WORD<1-16>

2. Configure the route preference:

   ipv6 route preference protocol <static|ebgp|ibgp|ospfv3-intra|ospfv3-inter|ospfv3-extern1|ospfv3-extern2|ripng|spbm-level1> <0-255>

3. Confirm that the configuration is correct:

   show ipv6 route preference [vrf WORD<1–16> | vrfids WORD<0–512>]

Example

Configure the route preference to RIPng and confirm the configuration is correct.

Switch:1>enable
Switch:1#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Switch:1(config)#ipv6 route preference protocol ripng 10
Switch:1(config)#show ipv6 route preference 
===============================================================================================
                                IPv6 Route Preference - GlobalRouter
===============================================================================================
PROTOCOL        DEFAULT    CONFIG    
-----------------------------------------------------------------------------------------------
LOCAL           0          0         
STATIC          5          5         
SPBM_L1         7          7         
OSPFv3_INTRA    20         20        
OSPFv3_INTER    25         25        
EBGP            45         45        
RIPNG           100        100       
OSPFv3_E1       120        120       
OSPFv3_E2       125        125       
IBGP            175        175