Brocade Virtual ADX Server Load Balancing Guide (Supporting ADX v03.1.00) User Manual

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Brocade Virtual ADX Server Load Balancing Guide

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Miscellaneous options

The following examples display how the output from the show ip route command will differ for the
same destination address for non-dangling and dangling VIPs. Notice that for dangling VIPs the
“gateway” is specified as a non-valid route (IPv4 and IPv6). Also, the “interface” is specified as
“drop” for IPv4 and “null” for IPv6. Display of these values is normal for dangling VIPs.

Example of non-dangling VIPs

Example of dangling VIPs

Important caveats.

•

Order of configuration is important in RHI. A user should choose between the two available
modes (dangling and non-dangling) first and configure the interface and VIP RHI accordingly.

•

Changing the interface configuration (for example: adding or deleting an IP address in the VIP
subnet or disabling the interface) while the RHI is active is not recommended.

•

To change the mode of the VIP, a user must remove RHI advertise first, change the interface
configuration and then re-enable the RHI configuration. RHI computes the mode only at the
time of enabling the RHI advertise option.

Virtual ADX#show ip route

Total number of IP routes: 1

Start index: 1 B:BGP D:Connected R:RIP S:Static O: OSPF *:Candidate

default

Destination NetMask

Gateway

Port

Cost

Type

10.1.1.0 255.255.255.0 10.1.1.105

1b1

Virtual ADX#show ipv6 route

IPv6 Routing Table - 1 entrie:

Type Codes: C - Connected, S - Static, R - RIP, O - OSPF, B - BGP, D - RA

Typ IPv6 Prefix

Next Hop Router

Interface

Dis/Metric

2001:db8::10/128

2001:db8::10

loopback 1

1/1