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Configuring an Explicit Route
To add an RSVP-TE explicit route, use the following command:
config mpls rsvp-te path <path_name> add ero [ipaddress
<ipaddress/masklength> | <host_name>] {strict | loose} {order <number>}
This command adds an IP address to the explicit route object (ERO) for the specified
path name. The RSVP-TE routed path may be described by a configured sequence of the
LSRs and/or subnets traversed by the path. Each defined LSR or subnet represents an
ERO subobject. Up to 64 subobjects can be added to each path name.
When specifying an LSR using the
switch must be configured so that the
address. The
may represent an LSR router ID, loopback address, or direct router interface, or an IP
prefix, which represents a directly connected subnet. Each IP address or prefix is
included in the ERO as an IPv4 subobject. Each specified subobject must be
topologically adjacent to the next subobject, as listed in the ERO. If the subobject
matches a direct router interface or a directly attached subnet, the switch verifies that
the path message is received on the matching router interface. If the LSR specified
matches the OSPF router ID or a configured loopback IP address, the router interface on
which the packet is received is ignored.
If the IP address is specified as
adjacent to the previous subobject as listed in the ERO. If the IP address is specified as
, the loose subobject is not required to be topologically adjacent to the previous
loose
subobject as listed in the ERO. If omitted, the default subobject attribute is
IP address or prefix is included in the ERO as an IPv4 subobject.
If the subobject matches a direct router interface or a directly attached subnet, the
switch verifies that the path message is received on the matching router interface. If the
LSR specified matches the OSPF router ID or a configured loopback IP address, the
router interface which the packet is received is ignored.
The LSR path order is optionally specified using the
parameter is an integer value from 1 to 65535. IP prefixes with a lower number
number
are sequenced before IP prefixes with a higher number. You can specify multiple paths
and assign them an order number. The order number determines the path that the LSP
The LSP next hop matches either the interface IP address or the OSPF router-id
1.
of the immediate neighbor LSR.
MPLS Module Installation and User Guide
keyword identifies an LSR using either a /32 address, which
ipaddress
strict
parameter, the DNS client on the
<host_name>
can first be resolved to an IP
<host_name>
, the strict subobject must be topologically
order
Configuring RSVP-TE
strict
keyword. The
order
1
. Each
5-19
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