Being redundant , confirming there is no age timer on 23/3400 running Junos 19.4R1.10 20.3R1-S1.2, 20.2R2.11
Original Message:
Sent: 02-08-2021 10:01
From: JONAS HAUGE KLINGENBERG
Subject: Age column of the MAC forwarding table.
@spuluka
I think it's platform dependent... on the old ones (EX3200/EX4200) it was shown/supported but the following entry is from an EX2300 running 18.2R3-S2 does not show this information anymore. You have to dig into the mac-learning-log to try matching age of the entry.
user@ex2300> show ethernet-switching table extensive 00:50:56:a1:ea:84
MAC address: 00:50:56:a1:ea:84
Routing instance: default-switch
VLAN name: V16, VLAN ID: 16
Learning interface: ge-0/0/32.0
Layer 2 flags: in_hash,in_ifd,in_ifl,in_vlan,in_rtt,kernel,in_ifbd
Epoch: 34 Sequence number: 2
Learning mask: 0x00000001
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Jonas Hauge Klingenberg - Juniper Ambassador
Original Message:
Sent: 02-08-2021 06:03
From: STEVE PULUKA
Subject: Age column of the MAC forwarding table.
root> show ethernet-switching table extensive
Ethernet-switching table: 15 entries, 12 learned, 0 persistent entries
VLAN: Guest, Tag: 5, MAC: *, Interface: All-members
Interfaces:
ge-0/0/46.0
Type: Flood
Action: Forward
Nexthop index: 1315
VLAN: Guest, Tag: 5, MAC: 00:12:01:1e:eb:4c, Interface: ge-0/0/46.0
Type: Learn, Age: 0, Learned: 5w0d 19:18:08
Action: Forward
Nexthop index: 1314
root> show ethernet-switching table detail
Ethernet-switching table: 15 entries, 12 learned, 0 persistent entries
VLAN: Guest, Tag: 5, MAC: *, Interface: All-members
Interfaces:
ge-0/0/46.0
Type: Flood
Action: Forward
Nexthop index: 1315
VLAN: Guest, Tag: 5, MAC: 00:12:01:1e:eb:4c, Interface: ge-0/0/46.0
Type: Learn, Age: 0, Learned: 5w0d 19:18:37
Action: Forward
Nexthop index: 1314
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Steve Puluka BSEET - Juniper Ambassador
IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP)
http://puluka.com/home
Original Message:
Sent: 02-07-2021 06:26
From: Unknown User
Subject: Age column of the MAC forwarding table.
Hi.
I never see the 'Age' column of the MAC table populated.
{master:0}
lab@ex1> show ethernet-switching table
MAC flags (S - static MAC, D - dynamic MAC, L - locally learned, P - Persistent static, C - Control MAC
SE - statistics enabled, NM - non configured MAC, R - remote PE MAC, O - ovsdb MAC)
Ethernet switching table : 4 entries, 4 learned
Routing instance : default-switch
Vlan MAC MAC Age Logical NH RTR
name address flags interface Index ID
v11 c0:bf:a7:ee:b6:a5 D - ge-0/0/4.0 0 0
v11 c0:bf:a7:ee:d1:41 D - ge-0/0/4.0 0 0
v12 c0:bf:a7:ee:b6:a6 D - ge-0/0/4.0 0 0
v12 c0:bf:a7:ee:d1:41 D - ge-0/0/4.0 0 0
Does the above CLI command every display a MAC's age?
Is there any other command that can give me a MAC entry's age?
Thanks,
Deepak