Hello @pradyumnayadavgla,
This is a typo indeed, I just fixed this in the post.
EIGRP will always start with the neighbor adjacency so the first packets that are exchanged are hello packets. In that lesson, I only showed the UPDATE messages from R2 instead of the entire debug because it wasn’t relevant.
That’s a good question…just looking at the acronyms, it’s not easy to tell. I tried to look it up in the master index which covers debug eigrp packets.
They don’t explain it there. I also looked at an EIGRP packet to see if it matches any of the items you find in a packet. This shows the AS number, flags, and sequence number but that’s pretty much it.
It does show up in the following command:
R1#show eigrp tech-support detailed
EIGRP feature plugins:::
eigrp-release : 23.00.00 : Portable EIGRP Release
: 2.00.15 : Source Component Release(rel23)
+ HMAC-SHA-256 Authentication
parser : 2.02.00 : EIGRP Parser Support
igrp2 : 2.00.00 : Reliable Transport/Dual Database
+ Wide Metrics
manet : 3.00.00 : Mobile ad-hoc network (MANET)
+ IPv4 support
+ IPv6 support
bfd : 2.00.00 : BFD Platform Support
eigrp-pfr : 1.00.01 : Performance Routing Support
+ IPv4 PFR
EVN/vNets : 1.00.00 : Easy Virtual Network (EVN/vNets)
+ IPv4 EVN/vNets
ipv4-af : 2.01.01 : Routing Protocol Support
+ Dynamic Remote Neighbors
ipv4-sf : 1.02.00 : Service Distribution Support
+ Dynamic Remote Neighbors
ipv6-af : 2.01.01 : Routing Protocol Support
+ Dynamic Remote Neighbors
+ IPv6 VRF
ipv6-sf : 2.01.00 : Service Distribution Support
+ Dynamic Remote Neighbors
+ IPv6 VRF
vNets-parse : 1.00.00 : EIGRP vNets Parse Support
snmp-agent : 2.00.00 : SNMP/SNMPv2 Agent Support
EIGRP Internal Process States
procinfoQ:
1: 0xFB72680 vrid:1 afi:1 as:1 tableid:0 vrfid:0 tid:0 name:
topo_ddbQ(1) 0xFB82278 tableid:0 name:base
topo_ddbQ.count: 1
procinfoQ.count: 1
deadQ:
ddbQ:
1: 0xFB82278 name:base
ddbQ.count: 1
---------------------------------------------------------
EIGRP Memory Usage:
EIGRP Memory In-use Asked-For/Allocated Count Size Cfg/Max
----------------------------------------------------------------------------
EIGRP IP pdb : 8308 8308/8360 1 8308 --/--
EIGRP-Core: DDB : 2508 2508/2560 1 2508 --/--
EIGRP-Core: DNDB : 1340 1340/1600 5 268 --/--
EIGRP-Core: DRDB : 1276 1276/1536 5 255 --/--
EIGRP-Core: Dual Events : 30004 30004/30056 1 30004 --/--
EIGRP-Core: Dual SIA Ev : 30004 30004/30056 1 30004 --/--
EIGRP-Core: Handle Arra : 156 156/312 3 52 --/--
EIGRP-Core: IIDB : 4660 4660/4920 5 932 --/--
EIGRP-Core: IIDB Scratc : 132 132/184 1 132 --/--
EIGRP-Core: Peer Handle : 80 80/184 2 40 --/--
EIGRP-Core: Peer Sub-To : 56 56/160 2 28 --/--
EIGRP-Core: Topology II : 516 516/776 5 103 --/--
EIGRP-Core: peer : 348 348/400 1 348 --/--
EIGRP-IPv4 : 340 340/392 1 340 --/--
EIGRP-IPv4: Netlist : 112 112/320 4 28 --/--
EIGRP-IPv4: Proto Priva : 28 28/80 1 28 --/--
EIGRP-IPv4: Protocol In : 3532 3532/3584 1 3532 --/--
EIGRP-IPv4: iidb_sb_lis : 112 112/320 4 28 --/--
EIGRP-OS: Interface Lin : 112 112/320 4 28 --/--
EIGRP-OS: Interface sub : 184 184/392 4 46 --/--
EIGRP-Parser: dBase Hdr : 1916 1916/2280 7 273 --/--
EIGRP-v4: Work Entry : -- 4260/4912 -- 60 50/0
EIGRP: Anchor entries : -- 7416/10224 -- 12 500/0
EIGRP: Dummy thread ent : -- 32/168 -- 32 200/0
EIGRP: ExtData : -- 24/168 -- 24 50/0
EIGRP: IOS Socket : 284 284/336 1 284 --/--
EIGRP: Input packet hea : -- 2304/3224 -- 16 100/0
EIGRP: Large packet buf : -- 57596/65760 -- 8228 100/0
EIGRP: List Large : -- 1036/1496 -- 148 5/0
EIGRP: List Medium : -- 72/168 -- 72 10/0
EIGRP: Max packet buffe : -- 16420/168 -- 16420 5/0
EIGRP: Medium packet bu : -- 548/168 -- 548 100/0
EIGRP: Packet descripto : -- 4256/4896 -- 56 50/0
EIGRP: Queue elements : -- 8892/10224 -- 36 200/0
EIGRP: Small Pool : 112 512/976 7 16 32/0
EIGRP: Small packet buf : -- 4444/5224 -- 44 100/0
EIGRP: Socket : 28 28/80 1 28 --/--
EIGRP: cmd handles : 64 64/168 2 32 --/--
EIGRP: mgd_timer : 6296 6296/9832 68 92 --/--
Total : 92508 200208/206984 138 -- --/--
Total allocated: 0.197 Mb, 202 Kb, 206984 bytes
---------------------------------------------------------
EIGRP-IPv4 Protocol for AS(1)
{vrid:1 afi:1 as:1 mode:1 tableid:0 vrfid:0 tid:0 name: }
PIDs: Hello: 370 PDM: 369
Router-ID: 11.11.11.11
Threads: procinfo: 0xFB6A4D8 ddb: 0xFB6A6E8
workQ:
iidbQ: Gi0/0 Gi0/1 Lo0 Lo1
count: 4
passive_iidbQ:
peerQ: 192.168.12.2-(Gi0/1)
count: 1
unicast_peerQ:
suspendQ:
networkQ: 192.168.12.0
0.0.0.0
count: 2
RedistStructs: src:(0)default distflag:0x8 ipdb->pdb->mask:0x8
count: 1
summaryQ:
Socket Queue: 0/10000/2/0 (current/max/highest/drops)
Input Queue: 0/10000/2/0 (current/max/highest/drops)
GRS/NSF: enabled hold-timer: 240
Active Timer: 3 min
Distance: internal 90 external 170
Max Path: 4
Max Hopcount: 100
Variance: 1
Rib-scale: 1
Metric Ver: 32bit
-------------------------------------------------------------------These seem to be some internal EIGRP things but they don’t explain it anywhere. In the output above, you also see some references to things like “ddbQ” under the Internal process states.
Keep in mind that variance doesn’t influence the S and FS selection. First we use select the S and FS(es), afterward we can use the variance command to insert FS(es) into the routing table.