Dell Command Line Reference Guide for the S4048–ON System 9.14.2.5

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seq

Assign a sequence number to a deny or permit filter in an IP access list while creating the filter.

Syntax
seq sequence-number {deny | permit} {source [mask] | any | host ip-address}} [count [byte] | log] [dscp value] [ecn value] [fragments] [monitor] [no-drop] [order]

To delete a filter, use the no seq sequence-number command.

Parameters
sequence-number
Enter a number from 0 to 4294967290.
deny
Enter the keyword deny to configure a filter to drop packets meeting this condition.
permit
Enter the keyword permit to configure a filter to forward packets meeting this criteria.
source
Enter an IP address in dotted decimal format of the network from which the packet was received.
mask
(OPTIONAL) Enter a network mask in /prefix format (/x) or A.B.C.D. The mask, when specified in A.B.C.D format, may be either contiguous or non-contiguous.
any
Enter the keyword any to specify that all routes are subject to the filter.
host ip-address
Enter the keyword host then the IP address to specify a host IP address or hostname.
count
(OPTIONAL) Enter the keyword count to count packets the filter processes.
bytes
(OPTIONAL) Enter the keyword bytes to count bytes the filter processes.
log
(OPTIONAL) Enter the keyword log to enter ACL matches in the log.
dscp
(OPTIONAL) Enter the keyword dcsp to match to the IP DCSCP values. The range is from 0 to 63.
ecn
(OPTIONAL) Enter the keyword ecn to match to the ECN values. The range is from 0 to 3.
order
(OPTIONAL) Enter the keyword order to specify the QoS order for the ACL entry. The range is from 0 to 254 (where 0 is the highest priority and 254 is the lowest; lower-order numbers have a higher priority). If you do not use the keyword order, the ACLs have the lowest order by default (255).
monitor
(OPTIONAL) Enter the keyword monitor to describe the traffic that you want to monitor and the ACL in which you are creating the rule is applied to the monitored interface.
NOTE: For more information, see “Flow-based Monitoring” in the Port Monitoring section of the Dell EMC Networking OS Configuration Guide.
fragments
Enter the keyword fragments to use ACLs to control packet fragments.
no-drop
Enter the keywords no-drop to match only the forwarded packets.
Defaults
Not configured
Command Modes
CONFIGURATION-STANDARD-ACCESS-LIST
Command History

This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC Networking OS Command Line Reference Guide.

Version
Description
9.12(0.0)
Removed the session–ID option from the monitor parameter.
9.11(0.0)
Added support for session–ID to the monitor parameter.
9.10(0.1)
Introduced on the S6010-ON and S4048T-ON.
9.10(0.0)
Introduced on the S3148.
9.10(0.0)
Introduced on the S6100-ON.
9.8(2.0)
Introduced on the S3100 series.
9.8(1.0)
Introduced on the Z9100–ON.
9.8(0.0P5)
Introduced on the S4048-ON.
9.8(0.0P2)
Introduced on the S3048-ON.
9.8(0.0)
Added the no-drop parameter.
9.7(0.0)
Introduced on the S6000–ON.
9.2(1.0)
Introduced on the Z9500.
9.0.2.0
Introduced on the S6000.
8.3.19.0
Introduced on the S4820T.
8.3.11.1
Introduced on the Z9000.
8.3.7.0
Introduced on the S4810.
8.3.1.0
Add the DSCP value for ACL matching.
8.2.1.0
Allows ACL control of fragmented packets for IP (Layer 3) ACLs.
8.1.1.0
Introduced on the E-Series.
7.6.1.0
Introduced on the S-Series.
7.5.1.0
Introduced on the C-Series.
7.4.1.0
Added support for the non-contiguous mask and added the monitor option.
6.5.10
Expanded to include the optional QoS order priority for the ACL entry.
Usage Information
The order option is relevant in the context of the Policy QoS feature only. The following applies:
  • The seq sequence-number command is applicable only in an ACL group.
  • The order option works across ACL groups that are applied on an interface via the QoS policy framework.
  • The order option takes precedence over seq sequence-number.
  • If you do not configure sequence-number, the rules with the same order value are ordered according to their configuration order.
  • If you configure sequence-number, the sequence-number is used as a tie breaker for rules with the same order.
Related Commands
  • deny — configure a filter to drop packets.
  • permit — configure a filter to forward packets.

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