Cisco 500 series Administration Manual page 480
Stackable managed switch
Hide thumbs
Also See for 500 series:
- Configuration manual (1140 pages) ,
- Administration manual (653 pages) ,
- Quick start manual (72 pages)
Table of Contents
Advertisement
VRRP
Configurable Elements of VRRP
NOTE
Cisco 500 Series Stackable Managed Switch Administration Guide
The following cases might occur when configuring a virtual router:
•
All the existing VRRP routers of the virtual router operate in VRRPv3. In this
case, configure your new VRRP router to operate in VRRPv3.
•
All the existing VRRP routers of the virtual router operate in VRRPv2. In this
case, configure your new VRRP router to operate in VRRPv2.
•
If there is at least one VRRP router of the virtual router operating in both
VRRPv2 and VRRPv3. In this case, configure your VRRP router to operate in
VRRPv3 even though VRRPv2 is also interoperable.
If there are VRRPv2 only routers and VRRPv3 only routers in the virtual
NOTE
router, you must configure at least one VRRPv2 and VRRPv3 router.
When both VRRPv2 and VRRPv3 are enabled on a VRRP router, the VRRP router
transmits both VRRPv2 and VRRPv3 packets. According to VRRPv3 standards,
enabling both VRRPv2 and VRRPv3 should be done when upgrading from v2 to v3.
Mixing the two versions should not be considered as a permanent solution. Please
refer to the VRRPv3 standard for details on VRRPv2 and VRRPv3 inter-operation.
Virtual Router IP Addresses
Each virtual router is assigned one or more IP addresses for which the current
master assumes responsibility.
A VRRP router supporting a virtual router must have an IP interface on the same IP
subnet with respect to the IP addresses configured on the virtual router.
Assigning IP addresses to a virtual router is done according to the following rules:
•
All the VRRP routers supporting the virtual router must be configured with
the same virtual router IP addresses in their configuration of the virtual
router.
•
None of the IP addresses can be used in another virtual router, or in VRRP
routers that are not supporting the virtual router.
•
One of the VRRP routers supporting the virtual router must be the owner of
all the IP addresses of the virtual router. A VRRP router is the owner of the IP
addresses if the addresses are real addresses configured on its IP
interface.
•
If a VRRP router (the physical router) is the owner of the virtual router's IP
addresses, the virtual router's IP address must be configured manually on
the VRRP router, not DHCP assigned.
28
480
Advertisement
Table of Contents
