65
Step
Command
Remarks
5.
Enable MPLS TE for the
OSPF area.
mpls te enable
By default, an OSPF area does not
support MPLS TE.
Configuring IS-IS TE
IS-IS TE uses a sub-TLV of the extended IS reachability TLV (type 22) to carry TE attributes.
Because the extended IS reachability TLV carries wide metrics, specify a wide metric-compatible
metric style for the IS-IS process before enabling IS-IS TE. Available metric styles for IS-IS TE
include wide, compatible, or wide-compatible. For more information about IS-IS, see
Layer 3—IP
Routing Configuration Guide
.
To make sure IS-IS LSPs can be flooded on the network, specify an MTU that is equal to or greater
than 512 bytes on each IS-IS enabled interface, because of the following:
•
The length of the extended IS reachability TLV might reach the maximum of 255 bytes.
•
The LSP header takes 27 bytes and the TLV header takes two bytes.
•
The LSP might also carry the authentication information.
To configure IS-IS TE:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Create an IS-IS process
and enter IS-IS view.
isis
[
process-id
]
By default, no IS-IS process exists.
3.
Specify a metric style.
cost-style
{
wide
|
wide-compatible
|
compatible
[
relax-spf-limit
] }
By default, only narrow metric style
packets can be received and sent.
For more information about this
command, see
Layer 3—IP Routing
Command Reference
.
4.
Enable MPLS TE for the
IS-IS process.
mpls te enable
[
Level-1
|
Level-2
]
By default, an IS-IS process does
not support MPLS TE.
5.
Specify the types of the
sub-TLVs
for
carrying
DS-TE parameters.
te-subtlv
{
bw-constraint value
|
unreserved-bw-sub-pool
value
} *
By default, the
bw-constraint
parameter is carried in sub-TLV
252,
and
the
unreserved-bw-sub-pool
parameter is carried in sub-TLV
251.
Configuring MPLS TE tunnel constraints
Perform this task on the ingress node of the MPLS TE tunnel.
Configuring bandwidth constraints for an MPLS TE tunnel
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter MPLS TE tunnel
interface view.
interface tunnel
tunnel-number
[
mode mpls-te
]
N/A
3.
Configure
bandwidth
required for the tunnel, and
specify a CT for the tunnel's
traffic.
mpls te bandwidth
[
ct0
|
ct1
|
ct2
|
ct3
]
bandwidth
By default, no bandwidth is
assigned, and the class type is CT
0.
Содержание FlexNetwork 5510 HI Series
Страница 9: ...vii Remote support 460 Documentation feedback 460 Index 462 ...
Страница 318: ...309 Request list 0 Retransmit list 0 ...
Страница 363: ...354 Verify that CE 1 and CE 2 can ping each other Details not shown ...
Страница 446: ...437 The MCE has redistributed the OSPF routes of the two VPN instances into the EBGP routing tables of PE 1 ...