Configuration Guide User guide

FastIron Configuration Guide 1219
53-1002494-02
Route learning and advertising parameters
For example, to advertise the summarized prefix 2001:DB8::/36 instead of the IPv6 address
2001:469e:0:adff:8935:e838:78:e0ff with a prefix length of 64 bits from Ethernet interface 3/1,
enter the following commands.
Brocade(config)# interface ethernet 3/1
Brocade(config-if-e100-3/1)# ipv6 address 2001:db8:0:adff:8935:e838:78:
e0ff /64
Brocade(config-if-e100-3/1)# ipv6 rip summary-address 2001:db8::/36
Syntax: [no] ipv6 rip summary-address <ipv6-prefix>/<prefix-length>
You must specify the <ipv6-prefix> parameter in hexadecimal using 16-bit values between colons
as documented in RFC 2373.
You must specify the <prefix-length> parameter as a decimal value. A slash mark (/) must follow
the <ipv6-prefix> parameter and precede the <prefix-length> parameter.
To stop the advertising of the summarized IPv6 prefix, use the no form of this command.
Changing the metric of routes learned and
advertised on an interface
A router interface increases the metric of an incoming RIPng route it learns by an offset (the default
is 1). The Brocade device then places the route in the route table. When the Brocade device sends
an update, it advertises the route with the metric plus the default offset of zero in an outgoing
update message.
You can change the metric offset an individual interface adds to a route learned by the interface or
advertised by the interface. For example, to change the metric offset for incoming routes learned by
Ethernet interface 3/1 to 1 and the metric offset for outgoing routes advertised by the interface to
3, enter the following commands.
Brocade(config)#interface ethernet 3/1
Brocade(config-if-e100-3/1)#ipv6 rip metric-offset 1
Brocade(config-if-e100-3/1)#ipv6 rip metric-offset out 3
In this example, if Ethernet interface 3/1 learns about an incoming route, it will increase the
incoming metric by 2 (the default offset of 1 and the additional offset of 1 as specified in this
example). If Ethernet interface 3/1 advertises an outgoing route, it will increase the metric by 3 as
specified in this example.
Syntax: [no] ipv6 rip metric-offset <1 – 16>
Syntax: [no] ipv6 rip metric-offset out <1 – 15>
To return the metric offset to its default value, use the no form of this command.