Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide - Manual (Page 268)

Modify virtual link parameters
OSPF has some parameters that you can modify for virtual links. Notice that these are the same
parameters as the ones you can modify for physical interfaces.
You can modify default values for virtual links using the following CLI command at the OSPF router
level of the CLI, as shown in the following syntax:
Syntax: [no] area { ip-addr | num } [virtual-link router-id dead-interval num | hello-interval num |
retransmit-interval num | transmit-delay num | authentication-key string | md5-authentication key
key-string | md5-authentication key-activation-wait-time num ]
Virtual link parameter descriptions
You can modify the following virtual link interface parameters:
area ip-addr | num The IP address or number of the transit area.
virtual-link router-
id The router ID of the OSPF router at the remote end of the virtual link.
dead-interval num The number of seconds that a neighbor router waits for a hello packet from the current router
before declaring the router down. The value can be from 1 - 65535 seconds. The default is
40 seconds.
hello-interval num The length of time between the transmission of hello packets. The range is 1 - 65535
seconds. The default is 10 seconds.
retransmit-interval
num The interval between the re-transmission of link state advertisements to router adjacencies
for this interface. The range is 0 - 3600 seconds. The default is 5 seconds.
transmit-delay
num The period of time it takes to transmit Link State Update packets on the interface. The range
is 0 - 3600 seconds. The default is 1 second.
authentication-key
string This parameter allows you to assign different authentication encryption methods on a port-
by-port basis. OSPF supports three methods of authentication for each interface: none,
simple encryption, and base 64 encryption. Only one encryption method can be active on an
interface at a time.
The simple encryption and base 64 encryption methods requires you to configure an
alphanumeric password on an interface. The password can be up to eight characters long.
All OSPF packets transmitted on the interface contain this password. All OSPF packets
received on the interface are checked for this password. If the password is not present, then
the packet is dropped.
By default, the authentication key is encrypted. If you want the authentication key to be in
clear text, insert a 0 between key and string. For example,
device C(config-ospf-router)# area 1 virtual-link 10.0.0.1
authentication-key 0 afternoon
The software adds a prefix to the authentication key string in the configuration. For example,
the following portion of the code has the encrypted code "2".
area 1 virtual-link 12.12.12.25 authentication-key 2 $on-o
The prefix can be one of the following:
• 0 = the key string is not encrypted and is in clear text
• 1 = the key string uses proprietary simple cryptographic 2-way algorithm
Modify virtual link parameters
268 FastIron Ethernet Switch Layer 3 Routing Configuration Guide
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