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Configuring Inner and Outer TPIDs and VLAN IDs

For some rewrite operations, you must configure the inner or outer TPID values and inner or outer VLAN ID values. These values can be applied to either the input VLAN map or the output VLAN map.

On Ethernet IQ, IQ2 and IQ2-E interfaces, on MX-series router Gigabit Ethernet, Tri-Rate Ethernet copper, and 10-Gigabit Ethernet interfaces, and on aggregated Ethernet interfaces using Gigabit Ethernet IQ2 and IQ2-E or 10-Gigabit Ethernet PICs on MX-series routing platforms, include the inner-tag-protocol-id statement to configure the inner TPID. For the inner VLAN ID, include the inner-vlan-id statement. For the outer TPID, include the tag-protocol-id statement. For the outer VLAN ID, include the vlan-id statement:

{
(pop | pop-pop | pop-swap | push | push-push | swap | swap-push | swap-swap);
inner-tag-protocol-id tpid;
inner-vlan-id number;
tpid;
number;
}
{
(pop | pop-pop | pop-swap | push | push-push | swap | swap-push | swap-swap);
inner-tag-protocol-id tpid;
inner-vlan-id number;
tpid;
number;
}

For aggregated Ethernet interfaces using Gigabit Ethernet IQ interfaces, include the tag-protocol-id statement for the outer TPID. For the outer VLAN ID, include the vlan-id statement:

{
(pop | push | swap);
tpid;
number;
}
{
(pop | push | swap);
tpid;
number;
}

For the input VLAN map, include these statements at the following hierarchy levels:

  • [edit interfaces interface-name unit logical-unit-number input-vlan-map]
  • [edit logical-systems logical-system-name interfaces interface-name unit logical-unit-number input-vlan-map]

For the output VLAN map, include these statements at the following hierarchy levels:

  • [edit interfaces interface-name unit logical-unit-number output-vlan-map]
  • [edit logical-systems logical-system-name interfaces interface-name unit logical-unit-number output-vlan-map]

The VLAN IDs you define in the input VLAN maps are stacked on top of the VLAN ID bound to the logical interface. For more information about binding a VLAN ID to the logical interface, see .

All TPIDs you include in input and output VLAN maps must be among those you specify at the [edit interfaces interface-name gigether-options ethernet-switch-profile [ tpids ]] hierarchy level or [edit interfaces interface-name aggregated-ether-options ethernet-switch-profile [ tpids ]] hierarchy level. For more information, see Configuring Frames with Particular TPIDs to Be Processed as Tagged Frames.

Table 1 and Table 2 specify when these statements are required. Table 1 indicates valid statement combinations for rewrite operations for the input VLAN map. “No” means the statement must not be included in the input VLAN map for the rewrite operation. “Optional” means the statement may be optionally specified for the rewrite operation in the input VLAN map. “Any” means that you must include the vlan-id statement, tag-protocol-id statement, inner-vlan-id statement, or inner-tag-protocol-id statement.

Table 1: Rewrite Operations and Statement Usage for Input VLAN Maps

 

Input VLAN Map Statements
Rewrite Operation vlan-id tag-protocol-id inner-vlan-id inner-tag-protocol-id
push

Optional

Optional

No

No
pop

No

No

No

No
swap

Any

Any

No

No
push-push

Optional

Optional

Optional

optional
swap-push

Optional

Optional

Any

Any
swap-swap

Optional

Optional

Any

Any
pop-swap

No

No

Any

Any
pop-pop

No

No

No

No

Table 2 indicates valid statement combinations for rewrite operations for the output VLAN map. “No” means the statement must not be included in the output VLAN map for the rewrite operation. “Optional” means the statement may be optionally specified for the rewrite operation in the output VLAN map.

Table 2: Rewrite Operations and Statement Usage for Output VLAN Maps

 

Output VLAN Map Statements
Rewrite Operation vlan-id tag-protocol-id inner-vlan-id inner-tag-protocol-id
push

No

Optional

No

No
pop

No

No

No

No
swap

No

Optional

No

No
push-push

No

Optional

No

Optional
swap-push

No

Optional

No

Optional
swap-swap

No

Optional

No

Optional
pop-swap

No

No

No

Optional
pop-pop

No

No

No

No

The following examples use Table 1 and Table 2 and show how the pop-swap operation can be configured in an input VLAN map and an output VLAN map:

Input VLAN Map with inner-vlan-id Statement, Output VLAN Map with Optional inner-tag-protocol-id Statement

[edit interfaces interface-name unit logical-unit-number]
{
pop-swap;
inner-vlan-id number;
}
{
pop-swap;
inner-tag-protocol-id tpid;
}

Input VLAN Map with inner-tag-protocol-id Statement, Output VLAN map with Optional inner-tag-protocol-id Statement

[edit interfaces interface-name unit logical-unit-number]
{
pop-swap;
inner-tag-protocol-id tpid;
}
{
pop-swap;
inner-tag-protocol-id tpid;
}

Input VLAN Map with inner-tag-protocol-id and inner-vlan-id Statements

[edit interfaces interface-name unit logical-unit-number]
{
pop-swap;
inner-vlan-id number;
inner-tag-protocol-id tpid;
}

Updated: 2009-04-07

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