Show mac address table cisco asr

For example, Last flapped: Aggregated Ethernet interfaces only Input rate in bits per second bps and packets per second pps. Information about the interface. Information about the link.

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MAC address and corresponding number of input frames, input bytes, output frames, and output bytes. Displayed for mac-address option for ge , xe , and et interface types only Display information about policers applied to a logical interface-MAC pair. Policer type —Type of policer that is out of spec with respect to the configuration. It can be one or more of the following:. Input premium —Number of high-priority rating out-of-spec frames or bytes received.

Output premium —Number of high-priority rating out-of-spec frames or bytes sent. Input aggregate —Total number of out-of-spec frames or bytes received. Ethernet, MTU: None, Source filtering: Disabled, Flow control: Enabled Device flags: Present Running Interface flags: None, Loopback: Disabled, Source filtering: Disabled, Minimum links needed: Interface flags: Configured, Input bytes: Policer type Discarded frames Discarded bytes Output aggregate Physical Interface.

Physical interface. Name of the physical interface. Interface index. Physical interface index number, which reflects its initialization sequence. SNMP ifIndex. SNMP index number for the physical interface. Description and name of the interface. Link-level type. Encapsulation being used on the physical interface.

MTU size on the physical interface. Speed at which the interface is running. Source filtering.

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Whether source filtering is configured. Flow control. The incoming frame fails to match any other subinterface, so it matches the main interface that is configured for l2transport. You can list a maximum of nine values. If more values are required, they must be assigned to another subinterface. But you can manipulate the tags with the rewrite command, so you can pop remove , translate, or push add tags to the incoming VLAN tag stack: This example removes the outer tag 13 of the incoming QinQ frame and forwards the frame with the dot1q tag on top:.

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The behavior is always symmetric , which means that the outer tag 13 is popped in the ingress direction and pushed in the egress direction. An outer QinQ tag is added to the incoming frame with a dot1q tag 4.

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In the egress direction, the QinQ tag is popped. In that case, there is no check in order to ensure that the outgoing frame has the correct VLAN tags according to the encapsulation command. This is an example configuration:. In this configuration, note that: That duplicated traffic might cause some application issues.

Otherwise, the packets are not forwarded and are dropped. In a point-to-point cross connect, the AC and the PW are coupled. STP or MST BPDUs are sent untagged and are transported through the point-to-point cross connect if the main interface is configured as l2transport or if there is a l2transport subinterface configured with the encapsulation untagged or encapsulation default commands.

A bridge-domain is basically one broadcast domain where broadcasts and multicast frames are flooded.

show interfaces mac-database

One mac-address-table is associated with each bridge-domain unless MAC learning is disabled manually by configuration, which is very rare. Bridge-domains can be grouped within a bridge group. A bridge group does not have a mac-address-table or other associations; it is just used for configuration and show commands.

Add the mac-address keyword to the show l2vpn forwarding bridge-domain command if you want to check the mac-address-table:. The hardware keyword polls the hardware mac-address-table directly from the ingress or egress forwarding engines:. MST is configured on the main interface:.

Since a BVI interface is a virtual interface, there are some restrictions on the features that can be enabled: Another solution is to use an external loopback cable between two ports on the router, where one port is in the bridge-domain and one port is configured as a normal routed interface where all features can be configured.

There should be a full mesh of PWs, so each PE receives the traffic directly and does not need to forward traffic between PWs since forwarding would cause a loop. This is called the split horizon rule. Broadcasts and multicasts are flooded over all PWs in order to ensure that all hosts can receive them. The feature is disabled by default; unless you set up storm control, you accept any rate of broadcasts, multicast, and unknown unicasts. Ethernet-services access-list You can use an ethernet-services access-list in order to drop traffic from specific hosts or verify if a router is getting packets from a host on an l2transport interface:.

The hardware matches can be seen only with the hardware keyword. Use the ingress or egress keyword depending upon the direction of the access-group. The linecard location of the interface where the access-list is applied is also specified. You can also apply an ipv4 access-list on a l2transport interface as a security or troubleshooting feature:. I used cisco. Like Like. You are commenting using your WordPress. You are commenting using your Twitter account. You are commenting using your Facebook account.

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MAC address table in Cisco ASR - Network Engineering Stack Exchange

Cisco networking. Skip to content. Home About. Additional options: This example removes the outer tag 13 of the incoming QinQ frame and forwards the frame with the dot1q tag on top: Configure second inner This is an example configuration: Point-to-point service Local switching: Bound Statistics: PLU 0, tail 0 bytes dropped: Bound Platform AC context: