4.利用VRRPv2和VRRPv3技术实现Vlan60、Vlan70、Vlan80、Vlan90网关冗余备份，VRRP ID与Vlan ID相同。VRRPv2 vip为10.10.VlanID.9（如Vlan60的VRRPv2 vip为10.10.60.9），VRRPv3 vip为FE80:VlanID::9（如Vlan60的VRRPv3 vip为FE80:60::9）。配置SW1为Vlan60、Vlan70的Master，SW2为Vlan80、Vlan90的Master。要求VRRP组中高优先级为120，低优先级为默认值，抢占模式为默认值，VRRPv2和VRRPv3发送通告报文时间间隔为默认值。当SW1或SW2上联链路发生故障，Master优先级降低30

以下是配置步骤：

1. 配置Vlan60、Vlan70、Vlan80、Vlan90，并为每个Vlan分配一个IP地址作为VRRPv2的虚拟IP地址和VRRPv3的虚拟IP地址。

interface Vlan60
  ip address 10.10.60.1 255.255.255.0
  ipv6 enable
  ipv6 address FE80:60::1/64
!
interface Vlan70
  ip address 10.10.70.1 255.255.255.0
  ipv6 enable
  ipv6 address FE80:70::1/64
!
interface Vlan80
  ip address 10.10.80.1 255.255.255.0
  ipv6 enable
  ipv6 address FE80:80::1/64
!
interface Vlan90
  ip address 10.10.90.1 255.255.255.0
  ipv6 enable
  ipv6 address FE80:90::1/64

2. 配置VRRPv2和VRRPv3，其中VRRP ID与Vlan ID相同。在SW1上为Vlan60和Vlan70配置Master，优先级为120，其他默认值；在SW2上为Vlan80和Vlan90配置Master，优先级为120，其他默认值。

interface Vlan60
  vrrp vrid 60
    priority 120
    virtual-ip-address 10.10.60.9
  vrrp vrid 60 ipv6
    priority 120
    virtual-link-local FE80:60::9
!
interface Vlan70
  vrrp vrid 70
    priority 120
    virtual-ip-address 10.10.70.9
  vrrp vrid 70 ipv6
    priority 120
    virtual-link-local FE80:70::9
!
interface Vlan80
  vrrp vrid 80
    priority 120
    virtual-ip-address 10.10.80.9
  vrrp vrid 80 ipv6
    priority 120
    virtual-link-local FE80:80::9
!
interface Vlan90
  vrrp vrid 90
    priority 120
    virtual-ip-address 10.10.90.9
  vrrp vrid 90 ipv6
    priority 120
    virtual-link-local FE80:90::9

3. 配置优先级降低30的触发条件。在SW1和SW2上配置跨链路优先级降低30的触发条件，当上联链路发生故障时触发。

interface GigabitEthernet1/0/1
  vrrp vrid 60 track GigabitEthernet1/0/2 decrement 30
  vrrp vrid 60 ipv6 track GigabitEthernet1/0/2 decrement 30
  vrrp vrid 70 track GigabitEthernet1/0/2 decrement 30
  vrrp vrid 70 ipv6 track GigabitEthernet1/0/2 decrement 30
!
interface GigabitEthernet1/0/2
  vrrp vrid 80 track GigabitEthernet1/0/1 decrement 30
  vrrp vrid 80 ipv6 track GigabitEthernet1/0/1 decrement 30
  vrrp vrid 90 track GigabitEthernet1/0/1 decrement 30
  vrrp vrid 90 ipv6 track GigabitEthernet1/0/1 decrement 30

以上是配置步骤，可以根据实际情况进行调整。