IP Configuration
Configuring IP
page 15-20
OmniSwitch AOS Release 7 Network Configuration Guide
June 2013
Configuring Route Map Sequences
A route map can consist of one or more sequences of statements. The sequence number determines which
statements belong to which sequence and the order in which sequences for the same route map are
processed.
To add match and set statements to an existing route map sequence, specify the same route map name and
sequence number for each statement. For example, the following series of commands creates route map
rm_1 and configures match and set statements for the rm_1 sequence 10:
-> ip route-map rm_1 sequence-number 10 action permit
-> ip route-map rm_1 sequence-number 10 match tag 8
-> ip route-map rm_1 sequence-number 10 set metric 1
To configure a new sequence of statements for an existing route map, specify the same route map name
but use a different sequence number. For example, the following commands create a sequence 20 for the
rm_1 route map:
-> ip route-map rm_1 sequence-number 20 action permit
-> ip route-map rm_1 sequence-number 20 match ipv4-interface to-finance
-> ip route-map rm_1 sequence-number 20 set metric 5
The resulting route map appears as follows:
-> show ip route-map rm_1
Route Map: rm_1 Sequence Number: 10 Action permit
match tag 8
set metric 1
Route Map: rm_1 Sequence Number: 20 Action permit
match ip4 interface to-finance
set metric 5
Sequence 10 and sequence 20 are both linked to route map rm_1 and are processed in ascending order
according to their sequence number value. There is an implied logical OR between sequences. As a result,
if there is no match for the tag value in sequence 10, then the match interface statement in sequence 20 is
processed. However, if a route matches the tag 8 value, then sequence 20 is not used. The set statement for
whichever sequence was matched is applied.
A route map sequence can contain multiple match statements. If these statements are of the same kind (for
example, match tag 5, match tag 8, and so on) then a logical OR is implied between each like statement. If
the match statements specify different types of matches (for example, match tag 5, match ip4 interface to-
finance, and so on), then a logical AND is implied between each statement. For example, the following
route map sequence
redistributes a route if its tag is either 8 or 5:
-> ip route-map rm_1 sequence-number 10 action permit
-> ip route-map rm_1 sequence-number 10 match tag 5
-> ip route-map rm_1 sequence-number 10 match tag 8
If the route has a tag of 8 or 5 and the route was learned on the IPv4 interface to-finance, the following
route map sequence redistributes a route:
-> ip route-map rm_1 sequence-number 10 action permit
-> ip route-map rm_1 sequence-number 10 match tag 5
-> ip route-map rm_1 sequence-number 10 match tag 8
-> ip route-map rm_1 sequence-number 10 match ipv4-interface to-finance