Note: This field is three bits in length and maps directly to IP Precedence TOS bits to provide class of service (COS).
S-bit:
Can be configured 0 or 1
Note; The S field is one bit in length and is used for stacking labels. This is important as it is used to indicate the last label
in the label stack.
TTL:
Can be configured in the range 0 to 255. The default setting is 128 hops
Note: Used to decrement the time-to-live counter.
BERT Setup - Header with MPLS Label
BERT Setup - MPLS Label Summary
IP Tab:
In the IP tab the user must configure the destination IP address and source address. The user may also configure
the following IP header fields;
IP TOS (for quality of service testing);
Legacy TOS (Precedence)
- The first three bits of the IP TOS field can be edited;
000 - Best Effort
001 - Bulk Data
010 - Transactional
011 - Call Signaling
100 - Streaming Video
101 - Voice
110 - Routing
111 - Reserve
DSCP (Differentiated Services Code Point)
- The first six bits of the IP TOS can be edited to provide more
granular service classification.
For more information on the definition of DSCP field in IPv4 and IPv6 headers, refer to
Time To Live (TTL):
Can be configured in the range 0 to 255
Fragment offset byte:
Can be configured in the range 0 to 65.528
Note: The fragment offset field, measured in units of eight-byte blocks, is 13 bits long and specifies the offset of a
particular fragment relative to the beginning of the original unfragmented IP datagram.
Protocol field:
UDP (0x11) or TCP (0x06)
BERT Setup - IP settings (DSCP
)
BERT Setup - IP settings (Legacy TOS
)
MX100/120 e-Manual D07-00-004 Rev A04
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