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Home Documentation Junos OS Junos CLI Reference CLI Reference S

Junos CLI Reference

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show evpn oism

date_range 11-Jun-24
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Syntax

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show evpn oism
<extensive>
<l3-context l3-vrf-name>

Description

Display information about optimized intersubnet multicast (OISM) elements configured on the devices in an EVPN-VXLAN fabric.

Options

extensive

(Optional) Display more detailed output. Without this option, the command displays brief output by default.

l3-context l3-vrf-name

(Optional) Display information only for the specified Layer 3 virtual routing and forwarding (VRF) routing instance.

Without this option, this command displays information for all Layer 3 VRF routing instances where you enabled OISM.

Required Privilege Level

view

Output Fields

Table 1: show evpn oism Output Fields

Field Name and Output Level

Field Description
L3 context (default) or EVPN L3 context (extensive)

VRF routing instance name.

SBD (default) or OISM SBD interface (extensive)

IRB interface of the supplemental bridge domain (SBD) that you configure in the corresponding VRF routing instance when you enable OISM.

If you don't enable OISM in the VRF routing instance, this command displays (null) in this field.

PEG-DF-ELECTION (default) or PEG DF Election (extensive)

PIM EVPN gateway (PEG) device designated forwarder (DF) election method enabled for the L3 context.

By default, peer OISM border leaf devices configured as PEG devices use native PIM DF election. You can enable OISM PEG DF election instead to customize the DF election method the PEG devices use. To do this, configure the peg-df-election statement at the [edit <routing-instances name> protocols evpn oism pim-evpn-gateway] hierarchy level.

PEG DF Algorithm (extensive)

PEG DF election method configured for the L3 context:

  • MOD—Mod-based DF election

  • PREFERENCE—Preference-based DF election

OISM Mode (extensive)

OISM operating mode:

  • Regular OISM—Original symmetric bridge domains (VLANs) version of OISM that requires you to configure all revenue VLANS symmetrically on all OISM leaf devices in the fabric.

  • Enhanced OISM—Asymmetric bridge domains (VLANs) enhanced version of OISM, where on each leaf device you can save resources by configuring only the revenue VLANs hosted by that device.

Sample Output

show evpn oism

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user@host> show evpn oism
L3 context                       SBD        PEG-DF-ELECTION
DELTA-VRF                        irb.901    Enabled
GAMMA-VRF                        irb.902    Enabled

show evpn oism l3-context extensive

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user@host> show evpn oism l3-context DELTA extensive
EVPN L3 context: DELTA
  OISM SBD interface: irb.901  
  PEG DF Election: Enabled
  PEG DF Algorithm: MOD
  OISM Mode: Regular OISM

show evpn oism extensive (Enhanced OISM)

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regress@SL1> show evpn oism extensive 
EVPN L3 context: DELTA
  OISM SBD interface: irb.901
  OISM Mode: Enhanced OISM

EVPN L3 context: GAMMA
  OISM SBD interface: irb.902
  OISM Mode: Enhanced OISM

Release Information

Command introduced in Junos OS Release 21.2R1.

PEG DF election output information added in Junos OS and Junos OS Evolved Release 23.4R1.

OISM Mode output field added in Junos OS and Junos OS Evolved Release 23.4R1.

Related Documentation

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