Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) - Manual (Page 158)

134 Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide
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Setting up signaled LSPs
1
The timer-value value specifies an amount of time in seconds that the router waits after the
primary or selected path comes back up before reverting to it.
Setting a Class of Service value for the LSP
The 3-bit EXP field in the MPLS header can be used to define a Class of Service (CoS) value for
packets travelling through the LSP. The user can manually set a CoS value for the LSP. The CoS
value that the user sets is applied to the CoS (EXP) field in the MPLS header of all packets entering
this LSP. This lets all packets travelling through an LSP to be treated with the same priority as they
travel the MPLS domain. The user can assign the LSP a CoS in the range 0–7.
To assign a CoS value of 7 (highest priority) to all packets traveling through LSP tunnel 1.
Brocade(config-mpls)# lsp tunnel1
Brocade(config-mpls-lsp)# cos 7
Syntax: [no] cos number
The MPLS CoS value is used for determining priority within an MPLS domain only, so when the label
is popped, the CoS value in the MPLS header is discarded; it is not copied back to the IP ToS field.
Allocating bandwidth to an LSP
The user can specify the allocation of bandwidth for an LSP, including the maximum and average
rates for packets that travel over it. Allocating bandwidth to an LSP lets the LSRs determine how
much bandwidth the LSP can consume and how much of the available bandwidth resources can be
advertised by using OSPF-TE LSAs.
The user can specify an average mean-rate kbps for the data on the LSP. When necessary, data
can travel at max-rate kbps, as long as the burst sent at the maximum rate contains no more than
max-burst bytes.
To set the maximum rate of packets that can go through an LSP (in Kbits/sec).
Brocade(config-mpls)# lsp tunnel1
Brocade(config-mpls-lsp)# traffic-eng max-rate 20
Syntax: [no] traffic-eng max-rate rate
To set the average rate of packets that can go through an LSP (in Kbits/sec).
Brocade(config-mpls)# lsp tunnel1
Brocade(config-mpls-lsp)# traffic-eng mean-rate 10
Syntax: [no] traffic-eng mean-rate rate
To set the maximum size (in bytes) of the largest burst the LSP can send at the maximum rate.
Brocade(config-mpls)# lsp tunnel1
Brocade(config-mpls-lsp)# traffic-eng max-burst 10
Syntax: [no] traffic-eng max-burst bytes