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cisco:certification_topics:ccie-ei:1.1.ai
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Managing MAC table
- The MAC address type can either be static or dynamic.
- Show the VLAN, MAC address, Type, and Port.
sh mac address-table Mac Address Table ------------------------------------------- Vlan Mac Address Type Ports ---- ----------- -------- ----- All 0100.0ccc.cccc STATIC CPU 1 0011.321b.6374 DYNAMIC Po1 1 0060.2e01.b9ab DYNAMIC Gi1/0/22 6 e063.da86.8322 DYNAMIC Gi1/0/48 6 f099.bf03.2158 DYNAMIC Gi1/0/43 99 0040.9d43.3597 DYNAMIC Gi1/0/38 3 e063.da86.8322 DYNAMIC Gi1/0/48 4 e063.da86.8322 DYNAMIC Gi1/0/48 5 e063.da86.8322 DYNAMIC Gi1/0/48 97 e063.da86.8322 DYNAMIC Gi1/0/48 98 e063.da86.8322 DYNAMIC Gi1/0/48 971 e063.da86.8322 DYNAMIC Gi1/0/48 202 e063.da86.8322 DYNAMIC Gi1/0/48- STATIC means the MAC address was manually set either from the factory or user.
- DYNAMIC means the MAC address was learned dynamically.
- Determine the port a MAC address belongs to.
switch#show mac address-table address 588a.5af5.69da Mac Address Table ------------------------------------------- Vlan Mac Address Type Ports ---- ----------- -------- ----- 1611 588a.5af5.69da DYNAMIC Gi1/0/15
- Determine the MAC address for a port.
switch#show mac address-table interface gigabitEthernet 1/0/15 Mac Address Table ------------------------------------------- Vlan Mac Address Type Ports ---- ----------- -------- ----- 1611 588a.5af5.69da DYNAMIC Gi1/0/15
- A port may contain more than one MAC address.
switch#show mac address-table interface gigabitEthernet 1/0/48 Mac Address Table ------------------------------------------- Vlan Mac Address Type Ports ---- ----------- -------- ----- 1 e063.da86.8318 DYNAMIC Gi1/0/48 1 e063.da86.8322 DYNAMIC Gi1/0/48 6 e063.da86.8322 DYNAMIC Gi1/0/48 99 e063.da86.8322 DYNAMIC Gi1/0/48 3 e063.da86.8322 DYNAMIC Gi1/0/48 4 e063.da86.8322 DYNAMIC Gi1/0/48 5 e063.da86.8322 DYNAMIC Gi1/0/48 97 e063.da86.8322 DYNAMIC Gi1/0/48 98 e063.da86.8322 DYNAMIC Gi1/0/48 971 e063.da86.8322 DYNAMIC Gi1/0/48 202 e063.da86.8322 DYNAMIC Gi1/0/48 131 e063.da86.8322 DYNAMIC Gi1/0/48 7 e063.da86.8322 DYNAMIC Gi1/0/48 3939 e063.da86.8322 DYNAMIC Gi1/0/48 200 e063.da86.8322 DYNAMIC Gi1/0/48 201 e063.da86.8322 DYNAMIC Gi1/0/48 1612 e063.da86.8322 DYNAMIC Gi1/0/48 1613 e063.da86.8322 DYNAMIC Gi1/0/48 1614 e063.da86.8322 DYNAMIC Gi1/0/48 1615 e063.da86.8322 DYNAMIC Gi1/0/48 1611 e063.da86.8322 DYNAMIC Gi1/0/48 1610 e063.da86.8322 DYNAMIC Gi1/0/48 32 e063.da86.8322 DYNAMIC Gi1/0/48 Total Mac Addresses for this criterion: 23
- Filter results for only VLAN 202.
switch#show mac address-table interface gigabitEthernet 1/0/48 vlan 202 Mac Address Table ------------------------------------------- Vlan Mac Address Type Ports ---- ----------- -------- ----- 202 e063.da86.8322 DYNAMIC Gi1/0/48 Total Mac Addresses for this criterion: 1
- Static interface configuration.
sw-27(config)#mac address-table static 2000.2000.2027 vlan 6 interface tenGigabitEthernet 1/0/1
sw-27#show mac address-table static | i Te1/0/1 6 2000.2000.2027 STATIC Te1/0/1
- Statically configure a MAC address on an interface.
sw-27(config)#int te 1/0/1 sw-27(config-if)#mac-address 2000.2000.2002
- Certain MAC addresses will not work and an error message will appear.
sw-27(config-if)#mac-address 0000.0000.0000 % Malformed hex mac address sw-27(config-if)#mac-address 1111.1111.1111 % Malformed hex mac address
- Verify MAC address on an interface.
sw-27#show interface te 1/0/1 | i address Hardware is Ten Gigabit Ethernet, address is 2000.2000.2002 (bia 0c75.bded.1881)
Aging Time
- Aging time for all VLANs.
sw-27#show mac address-table aging-time Global Aging Time: 300 Vlan Aging Time ---- ---------- 97 123 131 8340 5 35 201 125 200 30 99 30 98 240
- Aging time for one VLAN.
sw-27#show mac address-table aging-time vlan 97 Global Aging Time: 300 Vlan Aging Time ---- ---------- 97 123
MAC Address Count
- Number of MAC addresses present in all VLANs
sw-27#show mac address-table count Mac Entries for Vlan 1: --------------------------- Dynamic Address Count : 2 Static Address Count : 1 Total Mac Addresses : 3 Mac Entries for Vlan 6: --------------------------- Dynamic Address Count : 1 Static Address Count : 0 Total Mac Addresses : 1 Mac Entries for Vlan 97: --------------------------- Dynamic Address Count : 1 Static Address Count : 0 Total Mac Addresses : 1 Mac Entries for Vlan 131: --------------------------- Dynamic Address Count : 1 Static Address Count : 0 Total Mac Addresses : 1 Mac Entries for Vlan 5: --------------------------- Dynamic Address Count : 1 Static Address Count : 0 Total Mac Addresses : 1 Mac Entries for Vlan 201: --------------------------- Dynamic Address Count : 1 Static Address Count : 0 Total Mac Addresses : 1 Mac Entries for Vlan 200: --------------------------- Dynamic Address Count : 1 Static Address Count : 0 Total Mac Addresses : 1 Mac Entries for Vlan 99: --------------------------- Dynamic Address Count : 1 Static Address Count : 0 Total Mac Addresses : 1 Mac Entries for Vlan 3939: --------------------------- Dynamic Address Count : 1 Static Address Count : 0 Total Mac Addresses : 1 Total Dynamic Address Count : 10 Total Static Address Count : 1 Total Mac Address In Use : 11 Total Mac Address Space Available: 32757
Dynamic MAC Addresses
- Display only dynamic MAC addresses.
sw-27#show mac address-table dynamic Mac Address Table ------------------------------------------- Vlan Mac Address Type Ports ---- ----------- -------- ----- 1 c4b3.6a02.a097 DYNAMIC Te1/0/23 1 c4b3.6a02.a098 DYNAMIC Te1/0/24 6 c4b3.6a02.a08f DYNAMIC Te1/0/15 97 c4b3.6a02.a090 DYNAMIC Te1/0/16 131 c4b3.6a02.a091 DYNAMIC Te1/0/17 5 c4b3.6a02.a092 DYNAMIC Te1/0/18 201 c4b3.6a02.a093 DYNAMIC Te1/0/19 200 c4b3.6a02.a094 DYNAMIC Te1/0/20 99 c4b3.6a02.a095 DYNAMIC Te1/0/21 3939 c4b3.6a02.a096 DYNAMIC Te1/0/22 Total Mac Addresses for this criterion: 10
Learning Status
- This feature is deprecated.
Static MAC Addresses
- Display static MAC addresses.
MAC Address Count
MAC Address Count
MAC Address Count
All MAC Address-Table Combinations
- Other combinations include.
switch#show mac address-table ? address Address to lookup in the table aging-time MAC address table aging parameters count Number of MAC addresses in the table dynamic List dynamic MAC addresses interface List MAC adresses on a specific interface learning Display learning on VLAN or interface move MAC Move information multicast List multicast MAC addresses notification MAC notification parameters and history table secure List secure MAC addresses static List static MAC addresses vlan List MAC addresses on a specific vlan | Output modifiers <cr>
Managing Switching Table Sizes
General
- For lower-end switches, the finite memory can be adjusted to accommodate switch roles.
- This is done by changing the switch template.
- Also called: SDM, or Switch Database Management.
Template Options
- Template options include, but are not limited to.
- default
- Default bias
- access
- Access bias
- routing
- Unicast bias
- vlan
- VLAN bias
- dual-ipv4-and-ipv6
- Supports IPv4 and IPv6
- Display current template (on a 9300-24UX
sw-27#show sdm prefer Showing SDM Template Info This is the Access template. Number of VLANs: 4094 Unicast MAC addresses: 32768 Overflow Unicast MAC addresses: 1024 L2 Multicast entries: 8192 Overflow L2 Multicast entries: 512 L3 Multicast entries: 8192 Overflow L3 Multicast entries: 512 Directly connected routes: 24576 Indirect routes: 8192 Security Access Control Entries: 5120 QoS Access Control Entries: 5120 Policy Based Routing ACEs: 1024 Netflow Input ACEs: 256 Netflow Output ACEs: 768 Flow SPAN ACEs: 1024 Tunnels: 512 LISP Instance Mapping Entries: 2048 Control Plane Entries: 512 Input Netflow flows: 32768 Output Netflow flows: 32768 SGT/DGT (or) MPLS VPN entries: 8192 SGT/DGT (or) MPLS VPN Overflow entries: 512 Wired clients: 2048 MACSec SPD Entries: 256 VRF: 256 MPLS Labels: 8192 MPLS L3 VPN Routes VRF Mode: 7168 MPLS L3 VPN Routes Prefix Mode: 8192 MVPN MDT Tunnels: 256 L2 VPN EOMPLS Attachment Circuit: 256 MAX VPLS Bridge Domains : 128 MAX VPLS Peers Per Bridge Domain: 32 MAX VPLS/VPWS Pseudowires : 1024 These numbers are typical for L2 and IPv4 features. Some features such as IPv6, use up double the entry size; so only half as many entries can be created.
- Display information about an SDM template (On a 9300-24UX).
sw-27#show sdm prefer nat Showing SDM Template Info This is the NAT template. Number of VLANs: 4094 Unicast MAC addresses: 32768 Overflow Unicast MAC addresses: 1024 L2 Multicast entries: 8192 Overflow L2 Multicast entries: 512 L3 Multicast entries: 8192 Overflow L3 Multicast entries: 512 Directly connected routes: 24576 Indirect routes: 8192 Security Access Control Entries: 5120 QoS Access Control Entries: 1024 Policy Based Routing ACEs: 5120 Netflow Input ACEs: 256 Netflow Output ACEs: 768 Flow SPAN ACEs: 1024 Tunnels: 512 LISP Instance Mapping Entries: 512 Control Plane Entries: 512 Input Netflow flows: 32768 Output Netflow flows: 32768 SGT/DGT (or) MPLS VPN entries: 8192 SGT/DGT (or) MPLS VPN Overflow entries: 512 Wired clients: 2048 MACSec SPD Entries: 256 VRF: 256 MPLS Labels: 2048 MPLS L3 VPN Routes VRF Mode: 7168 MPLS L3 VPN Routes Prefix Mode: 8192 MVPN MDT Tunnels: 256 L2 VPN EOMPLS Attachment Circuit: 256 MAX VPLS Bridge Domains : 128 MAX VPLS Peers Per Bridge Domain: 32 MAX VPLS/VPWS Pseudowires : 1024 These numbers are typical for L2 and IPv4 features. Some features such as IPv6, use up double the entry size; so only half as many entries can be created.
Activate SDM Template
- The SDM template can be changed to another template by (On a 9300-24UX).
sw-27(config)#sdm prefer nat Changes to the running SDM preferences have been stored, but cannot take effect until the next reload. Use 'show sdm prefer' to see what SDM preference is currently active.
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