Flashcards: MLAG ISSU

Turn off spanning tree for the MLAG VLAN

Set an interface to always be "up"

Set MTU to allow jumbo frames

Command validates MLAG-relevant configuration and shows discrepancies

Derived after Primary Peer is elected (lowest MAC address); persistent across reboots; LACP and STP control packets use this to emulate one "logical" switch.

This protocol is active only on the Primary MLAG Peer; Secondary will forward BPDUs to Primary across the Peer Link.

What TCP/UDP port must be permitted in control plane ACL on both MLAG peers if non-default control plane is used?

What table is synchronized between MLAG peers for active/active member ports?

Which table is NOT synchronized between MLAG peers?

This protocol should be disabled on the MLAG peering VLAN to prevent the peer link from going into the discarding state.

What can you use to ensure that the MLAG peering VLAN is not used by any other ports, avoiding any possible loop conditions?

MLAG Peer link port-channels on interfaces spanning multiple ASICs or line cards increases _________

The peer link capacity should be _____ to the Leaf-to-Spine total capacity to avoid losing capacity if the uplinks fail.

This value should be identical (case-sensitive) across MLAG Peers as well as be unique in regards to other leaf MLAG pairs.

The MLAG configuration command that modifies the interval that MLAG interfaces are disabled after an MLAG peer reboots.

The MLAG configuration command that modifies the interval that non-MLAG interfaces are disabled after an MLAG peer reboots.

Used for upgrading MLAG peers one at a time with minimal traffic loss

MLAG ISSU: ______ or _____-_____ links in the MLAG topology will lose traffic while the switch reloads.

MLAG ISSU: which switch should be upgraded first?

MLAG ISSU:After the secondary switch is upgraded, you should wait for the _____ _____ timer to expire

MLAG ISSU: A checklist to be resolved before reloading the switch.

MLAG ISSU: Refer to the ______ ____ of the new EOS version and check the compatibility table to see if the new version is compatible with the currently install version.

MLAG ISSU: Monitor this command's output to ensure that "Stp agent is restartable" to avoid topology changes during the upgrade process.

MLAG ISSU: If both devices are reloaded at the same time, the reload delay timer is ________ once MLAG negotiates.

MLAG ISSU: After reboot of an MLAG switch, all non-peer-link interfaces are in an ________ state until the reload timer expires.

MLAG ISSU Upgrade Procedure

Verify primary/secondary MLAG state

Ensure configurations are consistent

Resolve ISSU warnings with "show mlag issu warnings"

Choose the correct upgrade code path per MLAG ISSU compatibility matrix 

Upgrade MLAG ________ switch

Wait for reload delay timer to expire, use

Monitor MLAG status using

Confirm MLAG secondary status using

Upgrade MLAG primary peer switch

Confirm overall MLAG status using

MLAG ISSU Upgrade Procedure

Verify primary/secondary MLAG state with "show mlag detail"

Ensure configurations are consistent

Resolve ISSU warnings with "show mlag issu warnings"

Choose the correct upgrade code path per MLAG ISSU compatibility matrix 

Upgrade MLAG secondary switch

Wait for ______ _____ timer to expire

Monitor MLAG status using

Confirm MLAG secondary status

Upgrade MLAG primary peer switch

Confirm overall MLAG status

MLAG ISSU Upgrade Procedure

Verify primary/secondary MLAG state with "show mlag detail"

Ensure configurations are consistent

Resolve ISSU warnings with "show mlag issu warnings"

Choose the correct upgrade code path per MLAG ISSU compatibility matrix found in the EOS "R______ N____"

Upgrade MLAG secondary switch

Wait for reload delay timer to expire

Monitor MLAG status using

Confirm MLAG secondary status

Upgrade MLAG primary peer switch

Confirm overall MLAG status