The following table lists the match conditions that can be used with ACL (Access Control List)s, and whether the condition can be used for ingress ACLs only, or with both ingress and egress. The conditions are not case-sensitive; for example, the match condition listed in the table as TCP-flags can also be written as tcp-flags. Within ACL Match Conditions are five different data types used in matching packets.
ACL Match Conditions lists general match conditions that apply to all traffic, unless otherwise noted. ACL Match Condition Data Types the data types and details on using them.
ACL Match Conditions
| Match Conditions | Description | Applicable IP Protocols/ Direction |
|---|---|---|
| ethernet-type number | Ethernet packet type. In place of the numeric value, you can specify one of the following text synonyms (the field values are also listed): ETHER-P-IP (0x0800), ETHER-P-8021Q (0x8100), ETHER-P-IPV6 (0x86DD). | Ethernet/Ingress and Egress |
| ethernet-source-address mac-address | Ethernet source MAC address | Ethernet/Ingress and Egress |
|
ethernet-source-address mac-address mask mask or ethernet-source-address mac-address/mask |
Ethernet source MAC address and mask. The mask is optional, and is in the same format as the MAC address, for example: ethernet-source-address 00:01:02:03:01:01 mask ff:ff:ff:ff:00:00or ethernet-source-address 00:01:02:03:01:01 / ff:ff:ff:ff:00:00Only those bits of the MAC address whose corresponding bit in the mask is set to 1 will be used as match criteria. So, the example above will match 00:01:02:03:xx:xx. If the mask is not supplied then it will be assumed to be ff:ff:ff:ff:ff:ff. In other words, all bits of the MAC address will be used for matching. |
Ethernet/Ingress and Egress |
| ethernet-destination-address mac-address | Ethernet destination MAC address | Ethernet/Ingress and Egress |
|
ethernet-destination-address mac-address mask mask or ethernet-source-address mac-address/mask |
Ethernet destination MAC address and mask. The mask is optional, and is in the same format as the MAC address, for example: ethernet-destination-address 00:01:02:03:01:01 mask ff:ff:ff:ff:00:00or ethernet-destination-address 00:01:02:03:01:01 / ff:ff:ff:ff:00:00Only those bits of the MAC address whose corresponding bit in the mask is set to 1 will be used as match criteria. So, the example above will match 00:01:02:03:xx:xx. If the mask is not supplied then it will be assumed to be ff:ff:ff:ff:ff:ff. In other words, all bits of the MAC address will be used for matching. |
Ethernet/Ingress and Egress |
| source-address prefix |
IP source address and mask. Use either all IPv4 or all IPv6 addresses in an ACL. On Summit series switches, using arbitrary mask arguments is supported. Masks are not restricted to be of a subnet type. Examples of arbitrary IPv4 and IPv6 masks include 10.22.3.4 and 1:0:0:ffff:2:4. The 1s in the mask indicate the corresponding bits of the source-address that should be used as part of the match criteria. |
All IP/Ingress and Egress |
| destination-address prefix |
IP destination address and mask. On Summit series switches, using arbitrary mask arguments is supported. Masks are not restricted to be of a subnet type. Examples of arbitrary IPv4 and IPv6 masks include 10.22.3.4 and 1:0:0:ffff:2:4. The 1s in the mask indicate the corresponding bits of the destination-address that should be used as part of the match criteria. |
All IP/Ingress and Egress |
| source-port {number|range} |
TCP or UDP source port. You must also specify the protocol match condition to determine which protocol is being used on the port, any time you use the this match condition. In place of the numeric value, you can specify one of the text synonyms listed under destination port. If no source-port is specified, the default source-port is “any.” |
TCP, UDP/Ingress and Egress |
| source-port number { mask value } | TCP or UDP port and mask. The mask is optional, and it can be decimal value or a hexadecimal value. | TCP,UDP/Ingress and Egress |
| destination-port {number|range} | TCP or UDP destination port. You must also specify the protocol match condition to determine which protocol is being used on the port, any time you use the this match condition. In place of the numeric value, you can specify one of the following text synonyms (the field values are also listed): afs(1483), bgp(179), biff(512), bootpc(68), bootps(67), cmd(514), cvspserver(2401), dhcp(67), domain(53), eklogin(2105), ekshell(2106), exec(512), finger(79), ftp(21), ftp-data(20), http(80), https(443), ident(113), imap(143), kerberos-sec(88), klogin(543), kpasswd(761), krb-prop(754), krbupdate(760), kshell(544), ldap(389), login(513), mobileip-agent(434), mobileip-mn(435), msdp(639), netbios-dgm(138), netbios-ns(137), netbios-ssn(139), nfsd(2049), nntp(119), ntalk(518), ntp(123), pop3(110), pptp(1723), printer(515), radacct(1813), radius(1812), rip(520), rkinit(2108), smtp(25), snmp(161), snmptrap(162), snpp(444), socks(1080), ssh(22), sunrpc(111), syslog(514), tacacs-ds(65), talk(517), telnet(23), tftp(69), timed(525), who(513), xdmcp(177), zephyr-clt(2103), or zephyr-hm(2104). | TCP, UDP/Ingress and Egress |
| destination-port number {mask value} | TCP or UDP port and mask. The mask is optional, and it can be decimal value or a hexadecimal value. Only those bits of the destination-port whose corresponding bit in the mask is set to 1 will be used as match criteria. | TCP,UDP/Ingress and Egress |
| TCP-flags bitfield | TCP flags. Normally, you specify this match in conjunction with the protocol match statement. In place of the numeric value, you can specify one of the following text synonyms (the field values are also listed): ACK(0x10), FIN(0x01), PUSH(0x08), RST(0x04), SYN(0x02), URG(0x20), SYN_ACK(0x12). | TCP/Ingress and Egress |
| IGMP-msg-type number | IGMP message type. Possible values and text synonyms: v1-report(0x12), v2-report(0x16), v3-report(0x22), V2-leave (0x17), or query(0x11). | IGMP/Ingress only |
| ICMP-Type number |
ICMP type field. Normally, you specify this match in conjunction with the protocol match statement. In place of the numeric value, you can specify one of the following text synonyms (the field values are also listed): echo-reply(0), echo-request(8), info-reply(16), info-request(15), mask-request(17), mask-reply(18), parameter-problem(12), redirect(5), router-advertisement(9), router-solicit(10), source-quench(4), time-exceeded(11), timestamp(13), timestamp-reply(14), or unreachable(3), v6-echo-request(128), v6-echo-reply(129), v6-mld-query(130), v6-mld-report(131), v6-mld-reduction(132), v6-router-soliciation(133), v6-router-advertisement(134), v6-neighbor-solicitation(135), v6-neighbor-advertisement(136), v6-redirect(137), v6-node-info-query(139), v6-node-info-reply(140), v6-unreachable(1), v6-packet-too-big(2), v6-time-exceeded(3), v6-parameter-problem(4), v6-echo-request(128), v6-echo-reply(129), v6-mld-query(130), v6-mld-report(131), v6-mld-reduction(132), v6-router-soliciation(133), v6-router-advertisement(134), v6-neighbor-solicitation(135), v6-neighbor-advertisement(136), v6-redirect(137), v6-node-info-query(139), v6-node-info-reply(140) v6-unreachable(1), v6-packet-too-big(2), v6-time-exceeded(3), v6-parameter-problem(4), v6-echo-request(128), v6-echo-reply(129), v6-mld-query(130), v6-mld-report(131), v6-mld-reduction(132), v6-router-soliciation(133), v6-router-advertisement(134), v6-neighbor-solicitation(135), v6-neighbor-advertisement(136), v6-redirect(137), v6-node-info-query(139), v6-node-info-reply(140). |
ICMP/Ingress only |
| ICMP-Code number |
ICMP code field. This value or keyword provides more specific information than the icmp-type. Because the value's meaning depends upon the associated icmp-type, you must specify the icmp-type along with the icmp-code (only available in IPv4). In place of the numeric value, you can specify one of the following text synonyms (the field values also listed); the keywords are grouped by the ICMP type with which they are associated: Parameter-problem: ip-header-bad(0), required-option-missing(1) Redirect: redirect-for-host (1), redirect-for-network (2), redirect-for-tos-and-host (3), redirect-for-tos-and-net (2) Time-exceeded: ttl-eq-zero-during-reassembly(1), ttl-eq-zero-during-transit(0) Unreachable: communication-prohibited-by-filtering(13), destination-host-prohibited(10), destination-host-unknown(7), destination-network-prohibited(9), destination-network-unknown(6), fragmentation-needed(4), host-precedence-violation(14), host-unreachable(1), host-unreachable-for-TOS(12), network-unreachable(0), network-unreachable-for-TOS(11), port-unreachable(3), precedence-cutoff-in-effect(15), protocol-unreachable(2), source-host-isolated(8), source-route-failed(5) |
IPv4 only/ICMP/Ingress only |
| source-sap | SSAP is a 1 byte field with possible values 0-255 decimal. The value can be specified in decimal or hexadecimal. The SSAP field can be found at byte offset 15 in 802.3 SNAP and LLC formatted packets. | Ethernet/Ingress Only |
| destination-sap | DSAP is a 1 byte field with possible values 0-255 decimal. The value can be specified in decimal or hexadecimal. The DSAP field can be found at byte offset 14 in 802.3 SNAP and LLC formatted packets. (Available on Summit family switches, SummitStack.) | Ethernet/Ingress Only |
| snap-type | SNAP type is a 2 byte field with possible values 0-65535 decimal. The value can be specified in decimal or hexadecimal. The SNAP type field can be found a byte offset 20 in 802.3 SNAP formatted packets. | Ethernet/Ingress Only |
| ttl number {mask value} | Time To Live with mask.The mask is optional, and it can be decimal value or a hexadecimal value.Only those bits of the ttl whose corresponding bit in the mask is set to 1 will be used as match criteria.This can be used to match IPv4 Time-To-Live and IPv6 Hop Limit. | All IP/Ingress and Egress. |
| IP-TOS number | IP TOS field. In place of the numeric value, you can specify one of the following text synonyms (the field values are also listed): minimize-delay 16 (0x10), maximize-reliability 4(0x04), minimize-cost2 (0x02), and normal-service 0(0x00). | All IP/Ingress and Egress |
| IP-TOS number {mask value} | IP-TOS and mask.The mask is optional, and it can be decimal value or a hexadecimal value.Only those bits of the IP-TOS whose corresponding bit in the mask is set to 1 will be used as match criteria. | All IP/Ingress and Egress |
| dscp value | DSCP field. In place of the value, you can specify one of the DSCP numeric values (for example, 8, 16, or 24). | All IP/Ingress and Egress |
| fragments | IP fragmented packet including first fragment. FO = 0 (FO = Fragment Offset in IP header) | All IP, no L4 rules/Ingress only |
| first-fragment | Matches only first fragmented packet. FO==0. | All IP/Ingress only |
| protocol number | IP protocol field. For IPv6, this matches the Next Header field in the packet. In place of the numeric value, you can specify one of the following text synonyms (the field values are also listed): egp(8), gre(47), icmp(1), igmp(2), ipip(4), Ipv6 over ipv4(41), ospf(89), pim(103), rsvp(46), st(5), tcp(6), or udp(17). | All IP/Ingress and Egress |
| vlan-format format | VLAN-format matches packets based on its vlan format. Can be one of the 4 values: untagged - will match all untagged packets single-tagged - will match all packets with only single tag. double-tagged - will match all packets with double tag outer-tagged - will match all packets with at least one tag ex. single tag or double tag. | Ethernet/Ingress and Egress |
| vlan-id number |
Matches the VLAN tag number or the VLAN ID which is given to a VLAN when created. The ACL rule can only be applied to ports or any, and not VLANs. The following restriction applies to all platforms: The vlan-id match condition matches on the “outer” tag of a VMAN.The vlan-id ACL keyword can be used in egress ACL. |
Ethernet/Ingress and Egress |
| vlan-id number {mask value} | VLAN-id and mask.The mask is optional, and it can be decimal value or a hexadecimal value.Only those bits of the Vlan tag Number or vlan id whose corresponding bit in the mask is set to 1 will be used as match criteria. | Ethernet/Ingress and Egress |
| vxlan-vni vni number |
VNI on an egress-terminated VXLAN packet (egress VTEP scenario) or on a transit switch. Available for both static and dynamic ingress ACLs. |
Ethernet/Egress |
| dot1p priority tag | Creates an ACL with 802.1p match conditions, allowing the ACL to take action based on the VLAN tag priority. (Available on all platforms.) | All IP/Ingress |
|
arp-sender-address prefix and arp-target-address prefix |
Matches the ARP sender protocol address and target protocol address respectively. prefix => IPv4 address / mask length. They cannot be combined with an Ethernet-source-address or Ethernet-destination-address in the same rule. They can be used only when the ACL hardware database is configured to be internal for those platforms that support “external-table” ACL databases. |
ARP packets/Ingress |
| ccos | Matches customer 802.1p on UNI or NNI ports. Available
on all platforms. ccos <ccos value> |
|
| cvid | Use this match criteria in the
following scenarios: Tagged VMAN ports: installing an ACL matching “cvid” on ingress or egress will match the inner vlan-id of a double tagged packet on a tagged VMAN port. Untagged VMAN ports: installing an ACL matching “cvid” on ingress or egress will match the single VLAN tag on an untagged VMAN port. CEP VMAN ports (with or without VPLS): installing an ACL matching “cvid” on ingress or egress will match the single VLAN tag on a CEP VMAN port (without translation). CEP VMAN ports with cvid translation (with or without translation): installing an ACL matching “cvid” on ingress will match the post-translation cvid. Installing an ACL matching “cvid” on egress will match the post-translation cvid. |
Ethernet/Ingress and Egress |
| class-id |
This match condition can be specified on any rule within a policy file or within a list of dynamic access-lists. A rule cannot both match a class-id and specify a class-id as an action. When a “class-id” match criteria is specified, the associated rule will be programmed into the normal “INGRESS stage” access-list hardware resource. The range of valid class-id values varies per platform. |
Ingress only. |
| unknown-l2-unicast | Matches the unknown L2 unicast packets | Ingress only |
| unknown-l2-multicast | Matches the unknown L2 multicast packets | Ingress only |
| unknown-l3-multicast | Matches the unknown L3 multicast packets | Ingress only |
| l2-da-hit | Matches the known L2 unicast packets | Ingress only |
| l2-match | Generic bit-matching pattern starting at the Layer 4 header of four separate chunks of 32-bits, each fully bit-maskable with a unique offset. | Ingress only |
Note
When you use a configured ACL that contains a match condition with any MAC address, IGMP snooping stops working and IGMP joins are flooded to all ports in a VLAN. When you unconfigure the ACL, IGMP joins stop flooding.Note
An ACL that matches the EAPS ethernet-destination-address (00:e0:2b:00:00:04) or ethernet-source-address (00:e0:2b:00:00:01) match condition with the permit action should not be applied to an EAPS master node on EAPS ring ports. Doing so causes an EAPS PDU loop. For the EAPS master node, you should use the copy-cpu-and-drop action with either of these match conditions.Note
Directed ARP response packets cannot be blocked with ACLs from reaching the CPU and being learned.Along with the data types described in ACL Match Condition Data Types, you can use the operators <, <=, >, and >= to specify match conditions. For example, the match condition, source-port 190, will match packets with a source port greater than 190. Be sure to use a space before and after an operator.
ACL Match Condition Data Types
| Condition Data Type | Description |
|---|---|
| prefix | IP source and destination address prefixes. To specify the address prefix, use the notation prefix/prefix-length. For a host address, prefix-length should be set to 32. |
| number | Numeric value, such as TCP or UDP source and destination port number, IP protocol number. |
| range | A range of numeric values. To specify the numeric range, use the notation: number - number |
| bit-field | Used to match specific bits in an IP packet, such as TCP flags and the fragment flag. |
| mac-address | 6-byte hardware address. |
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