diff --git a/TROUBLESHOOTING.md b/TROUBLESHOOTING.md new file mode 100644 index 0000000..7800145 --- /dev/null +++ b/TROUBLESHOOTING.md @@ -0,0 +1,947 @@ +# EVPN-VXLAN Fabric Troubleshooting Guide + +This guide provides systematic troubleshooting steps for Arista EVPN-VXLAN fabrics with MLAG. + +--- + +## πŸ“‹ Table of Contents + +1. [Troubleshooting Methodology](#troubleshooting-methodology) +2. [Layer 1: Physical Connectivity](#layer-1-physical-connectivity) +3. [Layer 2: MLAG & Port-Channels](#layer-2-mlag--port-channels) +4. [Layer 3: Underlay (BGP IPv4)](#layer-3-underlay-bgp-ipv4) +5. [Layer 4: Overlay (BGP EVPN)](#layer-4-overlay-bgp-evpn) +6. [Layer 5: VXLAN Data Plane](#layer-5-vxlan-data-plane) +7. [End-to-End Traffic Flow](#end-to-end-traffic-flow) +8. [Common Issues & Solutions](#common-issues--solutions) + +--- + +## πŸ” Troubleshooting Methodology + +**Always troubleshoot bottom-up:** +``` +Physical Links β†’ MLAG β†’ Underlay BGP β†’ Overlay EVPN β†’ VXLAN β†’ Traffic Flow +``` + +**For each layer:** +1. βœ… Verify expected state +2. ❌ Identify issues +3. πŸ”§ Apply fixes +4. ♻️ Re-verify + +--- + +## Layer 1: Physical Connectivity + +### Check Interface Status + +**On all switches (spines + leafs):** + +```bash +# Quick overview +show interfaces status + +# Detailed view of a specific interface +show interfaces Ethernet11 + +# Check for errors +show interfaces Ethernet11 | include error|drop|discard +``` + +**Expected Output:** +``` +Ethernet11 is up, line protocol is up (connected) + Hardware is Ethernet, address is 001c.7300.000b + Internet address is 10.0.1.1/31 + MTU 9214 bytes +``` + +**Troubleshooting:** +- `down/down` β†’ Physical issue (cable, peer interface) +- `up/down` β†’ Layer 2 issue (switchport config, STP) +- Check MTU: Should be **9214** on underlay P2P links + +--- + +## Layer 2: MLAG & Port-Channels + +### 2.1 Verify MLAG Peering + +**On each MLAG leaf pair (e.g., leaf1/leaf2):** + +```bash +# MLAG global status +show mlag + +# MLAG detailed info +show mlag detail + +# MLAG interfaces +show mlag interfaces +``` + +**Expected Output (show mlag):** +``` +MLAG Configuration: +domain-id : leafs +local-interface : Vlan4090 +peer-address : 10.0.199.255 +peer-link : Port-Channel999 + +MLAG Status: +state : Active +negotiation status : Connected +peer-link status : Up +local-int status : Up +system-id : 0c:1d:c0:1d:62:10 +dual-primary detection : Configured +``` + +**Troubleshooting:** + +| Issue | Cause | Fix | +|-------|-------|-----| +| state: `Inactive` | Peer-link down | Check Po999 and Ethernet10 | +| negotiation: `Connecting` | VLAN4090 issue | Verify IP addressing, peer-address config | +| peer-link: `Down` | Port-Channel999 down | Check `show port-channel 999` | +| dual-primary: `Detected` | Peer-link failed + heartbeat failed | Check mgmt network connectivity | + +--- + +### 2.2 Verify MLAG Peer-Link (Port-Channel999) + +```bash +# Port-Channel status +show port-channel 999 + +# Detailed view +show port-channel 999 detailed + +# LACP status +show lacp interface Port-Channel999 +``` + +**Expected Output:** +``` +Port Channel Port-Channel999 (Fallback State: Unconfigured): +Active Ports: Ethernet10 +``` + +**Troubleshooting:** +- No active ports β†’ Check `show interfaces Ethernet10` +- Wrong mode β†’ Should be `switchport mode trunk` +- Missing VLANs β†’ Check `switchport trunk group mlag-peer` + +--- + +### 2.3 Verify Host-Facing Port-Channels (MLAG) + +**On each leaf connected to hosts:** + +```bash +# Port-Channel status +show port-channel 1 + +# MLAG status for Po1 +show mlag interfaces Port-Channel1 + +# LACP neighbor +show lacp neighbor +``` + +**Expected Output (show port-channel 1):** +``` +Port Channel Port-Channel1 (Fallback State: individual): +Active Ports: Ethernet1 +``` + +**Expected Output (show mlag interfaces):** +``` + local/remote + mlag desc state local remote status +------ -------------- ------------- ----------- ------------ --------------- + 1 host1 active-full Po1 Po1 up/up +``` + +**Troubleshooting:** + +| Issue | Cause | Fix | +|-------|-------|-----| +| `inactive` | MLAG peering down | Fix MLAG first (section 2.1) | +| `active-partial` | Remote Po1 down on peer leaf | Check peer leaf's Po1 | +| `configured-inactive` | Missing `mlag 1` config | Add `mlag 1` to Po1 | +| No LACP neighbor | Host bonding issue | Check host: `ip link show bond0` | + +--- + +### 2.4 Verify iBGP Peering Link (VLAN 4091) + +```bash +# VLAN4091 interface status +show ip interface Vlan4091 + +# Ping peer +ping vrf default 10.0.3.1 source 10.0.3.0 +``` + +**Expected:** +- Interface: `up/up` +- Ping: Successful + +--- + +## Layer 3: Underlay (BGP IPv4) + +### 3.1 Verify BGP Neighbors (Underlay) + +**On Spines:** + +```bash +# BGP summary +show ip bgp summary + +# Specific neighbor +show ip bgp neighbor 10.0.1.1 +``` + +**Expected Output:** +``` +Neighbor V AS MsgRcvd MsgSent InQ OutQ Up/Down State PfxRcd PfxAcc +10.0.1.1 4 65001 245 243 0 0 02:01:23 Estab 2 2 +10.0.1.3 4 65001 245 243 0 0 02:01:20 Estab 2 2 +... +``` + +**On Leafs:** + +```bash +# BGP summary +show ip bgp summary + +# Check underlay peer-group +show bgp peer-group underlay +``` + +**Expected neighbors:** +- eBGP to both spines (state: `Estab`) +- iBGP to MLAG peer (state: `Estab`) + +--- + +### 3.2 Verify Loopback Reachability + +**On any leaf, ping all other loopbacks:** + +```bash +# Ping spine loopbacks +ping 10.0.250.1 source 10.0.250.11 +ping 10.0.250.2 source 10.0.250.11 + +# Ping other leaf loopbacks +ping 10.0.250.13 source 10.0.250.11 +ping 10.0.250.15 source 10.0.250.11 +ping 10.0.250.17 source 10.0.250.11 + +# Ping VTEP loopbacks (important!) +ping 10.0.255.12 source 10.0.255.11 +ping 10.0.255.13 source 10.0.255.11 +ping 10.0.255.14 source 10.0.255.11 +``` + +**Expected:** +- All pings successful +- RTT < 10ms (virtual environment) + +**Troubleshooting:** +```bash +# Check routing table +show ip route + +# Verify loopback advertisements +show ip bgp 10.0.250.13 + +# Check BGP is advertising loopbacks +show ip bgp neighbors 10.0.1.0 advertised-routes +``` + +**Common issues:** +- Missing `network 10.0.250.X/32` in BGP config +- Missing `network 10.0.255.X/32` (VTEP loopback!) +- BGP neighbor not activated in IPv4 address-family + +--- + +### 3.3 Verify ECMP (Equal-Cost Multi-Path) + +```bash +# Check routes to a remote loopback +show ip route 10.0.250.13 + +# Should show multiple next-hops +show ip route 10.0.250.13 detail +``` + +**Expected Output:** +``` + B E 10.0.250.13/32 [20/0] via 10.0.1.0, Ethernet11 + via 10.0.2.0, Ethernet12 +``` + +Two paths via both spines = βœ… ECMP working + +--- + +## Layer 4: Overlay (BGP EVPN) + +### 4.1 Verify EVPN Neighbors + +**On Spines:** + +```bash +# EVPN summary +show bgp evpn summary + +# Check specific neighbor +show bgp evpn neighbor 10.0.250.11 +``` + +**Expected:** +- All 8 leafs in `Estab` state +- PfxRcd > 0 (receiving EVPN routes) + +**On Leafs:** + +```bash +# EVPN summary +show bgp evpn summary +``` + +**Expected:** +- Both spines in `Estab` state +- PfxRcd > 0 + +--- + +### 4.2 Verify EVPN Routes + +**Check EVPN route types:** + +```bash +# Type-2: MAC/IP routes (L2 VXLAN) +show bgp evpn route-type mac-ip + +# Type-3: IMET routes (VXLAN flood list) +show bgp evpn route-type imet + +# Type-5: IP Prefix routes (L3 VXLAN) +show bgp evpn route-type ip-prefix ipv4 +``` + +**Expected for L2 VXLAN (VLAN 40):** + +```bash +show bgp evpn route-type mac-ip +``` + +Output should show: +- Local MACs (learned on Port-Channel1) +- Remote MACs (from other VTEPs via EVPN) + +**Expected for L3 VXLAN (VRF gold):** + +```bash +show bgp evpn route-type ip-prefix ipv4 +``` + +Output should show: +- Local subnets (e.g., 10.34.34.0/24 on VTEP2) +- Remote subnets (e.g., 10.78.78.0/24 from VTEP4) + +--- + +### 4.3 Troubleshoot EVPN Issues + +**No EVPN neighbors:** +```bash +# Check if EVPN is activated +show running-config | section evpn + +# Should see: +# address-family evpn +# neighbor evpn activate +``` + +**No EVPN routes received:** +```bash +# Check route-target configuration +show running-config | section vlan 40 + +# Should have: +# vlan 40 +# rd 65001:110040 +# route-target both 40:110040 +# redistribute learned +``` + +**EVPN routes received but not installed:** +```bash +# Check VXLAN interface +show interfaces Vxlan1 + +# Verify VNI mapping +show vxlan vni +``` + +--- + +## Layer 5: VXLAN Data Plane + +### 5.1 Verify VXLAN Interface + +```bash +# VXLAN interface status +show interfaces Vxlan1 + +# VNI to VLAN mappings +show vxlan vni + +# VTEP flood lists +show vxlan flood vtep + +# Address table (MAC learning) +show vxlan address-table +``` + +**Expected Output (show interfaces Vxlan1):** +``` +Vxlan1 is up, line protocol is up (connected) + Hardware is Vxlan + Source interface is Loopback1 and is active with 10.0.255.11 + Replication/Flood Mode is headend with Flood List Source: EVPN + Remote MAC learning via EVPN + VNI mapping to VLANs + Static VLAN to VNI mapping is + [40, 110040] + Static VRF to VNI mapping is + [gold, 100001] +``` + +**Expected Output (show vxlan vtep):** +``` +Remote VTEPS for Vxlan1: + +VTEP Tunnel Type(s) +-------------- -------------- +10.0.255.12 flood, unicast +10.0.255.13 flood, unicast +10.0.255.14 flood, unicast + +Total number of remote VTEPS: 3 +``` + +--- + +### 5.2 Verify MAC Learning + +**Check local MAC learning:** + +```bash +# MACs learned on Port-Channel1 +show mac address-table interface Port-Channel1 + +# MACs learned via VXLAN +show mac address-table interface Vxlan1 + +# Combined view for a VLAN +show mac address-table vlan 40 +``` + +**Expected Output:** +``` + Mac Address Table +------------------------------------------------------------------ +Vlan Mac Address Type Ports Moves Last Move +---- ----------- ---- ----- ----- --------- + 40 00c1.ab00.0011 DYNAMIC Po1 1 0:05:23 ago + 40 00c1.ab00.0033 DYNAMIC Vx1 1 0:05:20 ago +``` + +- Local host MAC β†’ learned on **Po1** +- Remote host MAC β†’ learned on **Vx1** (VXLAN) + +--- + +### 5.3 Verify VXLAN Address Table + +```bash +# VXLAN-specific MAC table +show vxlan address-table + +# Detailed view +show vxlan address-table vlan 40 +``` + +**Expected Output:** +``` + Vxlan Mac Address Table +---------------------------------------------------------------------- +VLAN Mac Address Type Prt VTEP Moves Last Move +---- ----------- ---- --- ---- ----- --------- + 40 00c1.ab00.0033 EVPN Vx1 10.0.255.13 1 0:05:20 ago +``` + +Shows which remote VTEP the MAC is behind! + +--- + +## End-to-End Traffic Flow + +### Scenario: host1 (VTEP1) pings host3 (VTEP3) - L2 VXLAN + +Both hosts in VLAN 40 (10.40.40.0/24) + +--- + +#### Step 1: Host Sends Packet + +**On host1:** +```bash +docker exec -it clab-arista-evpn-fabric-host1 sh + +# Check bond interface +ip link show bond0 + +# Check VLAN interface +ip link show bond0.40 + +# Send ping +ping 10.40.40.103 +``` + +**Expected:** +- bond0: `state UP` +- bond0.40: `state UP` + +--- + +#### Step 2: Packet Arrives at leaf1 (VTEP1) + +**On leaf1:** + +```bash +# Check Port-Channel received the packet +show interfaces Port-Channel1 | include packets + +# Check MAC learning +show mac address-table dynamic vlan 40 + +# Should see host1's MAC on Po1 +``` + +**Traffic flow:** +``` +host1:bond0.40 β†’ [802.1Q VLAN 40] β†’ leaf1:Eth1 β†’ Po1 +``` + +--- + +#### Step 3: Leaf1 Lookup & VXLAN Encapsulation + +**Leaf1 checks MAC table:** + +```bash +show mac address-table address 00c1.ab00.0033 + +# Output: +# VLAN 40, MAC 00c1.ab00.0033 β†’ Vxlan1 +``` + +**Leaf1 checks VXLAN address-table:** + +```bash +show vxlan address-table address 00c1.ab00.0033 + +# Output: +# VLAN 40, MAC 00c1.ab00.0033 β†’ VTEP 10.0.255.13 +``` + +**Encapsulation:** +``` +Original: [Eth: host1β†’host3][IP: 10.40.40.101β†’103][ICMP] + +VXLAN: [Outer IP: 10.0.255.11β†’10.0.255.13] + [Outer UDP: src=random, dst=4789] + [VXLAN Header: VNI=110040] + [Inner Eth: host1β†’host3][IP: 10.40.40.101β†’103][ICMP] +``` + +--- + +#### Step 4: Underlay Routing + +**Leaf1 routes outer packet:** + +```bash +# Check route to remote VTEP +show ip route 10.0.255.13 + +# Output: +# via 10.0.1.0, Ethernet11 (spine1) +# via 10.0.2.0, Ethernet12 (spine2) +``` + +ECMP: Packet can go via spine1 OR spine2! + +**Spine forwards based on outer IP:** +```bash +# On spine1 +show ip route 10.0.255.13 + +# Output: +# via 10.0.1.5, Ethernet3 (leaf5) +``` + +--- + +#### Step 5: Packet Arrives at leaf5 (VTEP3) + +**On leaf5:** + +```bash +# Check VXLAN received the packet +show interfaces Vxlan1 | include packets + +# VXLAN decapsulation happens automatically +``` + +**Decapsulation:** +``` +VXLAN packet β†’ Strip outer IP/UDP/VXLAN headers +β†’ Original frame: [Eth: host1β†’host3][IP: 10.40.40.101β†’103][ICMP] +``` + +**Leaf5 checks MAC table:** +```bash +show mac address-table address 00c1.ab00.0033 + +# Output: +# VLAN 40, MAC 00c1.ab00.0033 β†’ Port-Channel1 +``` + +--- + +#### Step 6: Packet Delivered to host3 + +``` +leaf5:Vxlan1 β†’ VLAN 40 β†’ Po1 β†’ Eth1 β†’ host3:bond0.40 +``` + +**On host3:** +```bash +docker exec -it clab-arista-evpn-fabric-host3 sh + +# Check received ping +ping 10.40.40.101 # Reply should work! +``` + +--- + +### Complete Flow Diagram + +``` +β”Œβ”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β” +β”‚ L2 VXLAN Traffic Flow β”‚ +β””β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜ + +host1 (10.40.40.101) host3 (10.40.40.103) + β”‚ β–² + β”‚ 1. Send ping to 10.40.40.103 β”‚ + β”‚ [VLAN 40 tag] β”‚ 6. Receive reply + β”‚ β”‚ [VLAN 40 tag] + β–Ό β”‚ +leaf1:Po1 leaf5:Po1 + β”‚ β–² + β”‚ 2. MAC lookup: β”‚ 5. MAC lookup: + β”‚ 00c1.ab00.0033 β†’ Vx1 β†’ 10.0.255.13 β”‚ 00c1.ab00.0011 β†’ Vx1 + β”‚ β”‚ + β–Ό β”‚ +leaf1:Vxlan1 leaf5:Vxlan1 + β”‚ β–² + β”‚ 3. VXLAN encap: β”‚ 4. VXLAN decap: + β”‚ Outer: 10.0.255.11 β†’ 10.0.255.13 β”‚ Strip outer headers + β”‚ VNI: 110040 β”‚ + β”‚ Inner: original frame β”‚ + β”‚ β”‚ + β–Ό β”‚ +leaf1:Eth11 ──────► spine1 ──────► leaf5:Eth11 β”€β”€β”€β”€β”€β”€β”€β”€β”€β”€β”˜ + (underlay BGP routing) +``` + +--- + +## Common Issues & Solutions + +### Issue 1: Ping Fails Between Hosts in Same VLAN + +**Symptoms:** +- Host1 cannot ping Host3 (both VLAN 40) +- MACs not learning + +**Troubleshooting Steps:** + +```bash +# 1. Check Port-Channel +show port-channel 1 +# β†’ Should show active ports + +# 2. Check VLAN config +show vlan 40 +# β†’ Should show Po1 as member + +# 3. Check MAC learning +show mac address-table vlan 40 +# β†’ Should see local host MAC on Po1 + +# 4. Check VXLAN interface +show interfaces Vxlan1 +# β†’ Should be up/up + +# 5. Check remote VTEPs +show vxlan vtep +# β†’ Should list remote VTEPs + +# 6. Check EVPN routes +show bgp evpn route-type mac-ip +# β†’ Should see remote MACs + +# 7. Check VXLAN address-table +show vxlan address-table vlan 40 +# β†’ Should see remote MACs via Vx1 +``` + +**Common Causes:** + +| Issue | Fix | +|-------|-----| +| Port-Channel down | Check LACP, add fallback config | +| MLAG not synced | Fix MLAG peering (VLAN 4090) | +| VNI not configured | Add `vxlan vlan 40 vni 110040` | +| EVPN not advertising | Add `redistribute learned` under `vlan 40` in BGP | +| Wrong route-target | Verify RT matches on all VTEPs | + +--- + +### Issue 2: Ping Fails Between VRFs (L3 VXLAN) + +**Symptoms:** +- host2 (10.34.34.102) cannot ping host4 (10.78.78.104) +- Both in VRF gold + +**Troubleshooting Steps:** + +```bash +# 1. Check VRF routing +show ip route vrf gold + +# 2. Check BGP EVPN Type-5 routes +show bgp evpn route-type ip-prefix ipv4 + +# 3. Check VRF VNI mapping +show vxlan vni +# β†’ Should show VRF gold β†’ VNI 100001 + +# 4. Check SVI is in VRF +show ip interface Vlan34 +# β†’ Should show "VRF: gold" + +# 5. Check virtual gateway +show ip virtual-router +``` + +**Common Causes:** + +| Issue | Fix | +|-------|-----| +| SVI not in VRF | Add `vrf gold` under `interface Vlan34` | +| VRF not mapped to VNI | Add `vxlan vrf gold vni 100001` | +| Route-target mismatch | Verify `route-target both evpn 1:100001` | +| BGP not redistributing | Add `redistribute connected` under `vrf gold` | + +--- + +### Issue 3: MLAG Port-Channel Inactive + +**Symptoms:** +``` +show mlag interfaces +# mlag 1: configured-inactive +``` + +**Troubleshooting:** + +```bash +# 1. Check MLAG global state +show mlag +# β†’ Should be "Active" + +# 2. Check Port-Channel on BOTH leafs +show port-channel 1 + +# 3. Check MLAG config on BOTH leafs +show running-config interfaces Port-Channel1 +# β†’ Should have "mlag 1" + +# 4. Check peer leaf +# SSH to peer and run: show port-channel 1 +``` + +**Fix:** +- Ensure BOTH leafs have `mlag 1` configured +- Ensure MLAG peering is up first +- Check peer leaf's Port-Channel status + +--- + +### Issue 4: LACP Not Establishing + +**Symptoms:** +``` +show port-channel 1 +# No Active Ports +# Configured, but inactive ports: +# Ethernet1: waiting for LACP response +``` + +**Fix:** +```bash +# Add LACP fallback +configure +interface Port-Channel1 + port-channel lacp fallback timeout 5 + port-channel lacp fallback individual +``` + +**Verify:** +```bash +show port-channel 1 +# β†’ Should show Ethernet1 in "Active Ports" (fallback mode) + +# Wait 5 seconds, check LACP +show lacp neighbor +# β†’ Should show LACP neighbor if host is configured correctly +``` + +--- + +### Issue 5: BGP EVPN Neighbors Not Establishing + +**Symptoms:** +``` +show bgp evpn summary +# Neighbors stuck in "Connect" or "Active" state +``` + +**Troubleshooting:** + +```bash +# 1. Check underlay reachability +ping 10.0.250.1 source Loopback0 + +# 2. Check EVPN neighbor config +show running-config | section evpn + +# 3. Check if EVPN is activated +show bgp evpn neighbors 10.0.250.1 +# β†’ Look for "Address Family: evpn" + +# 4. Check for BGP errors +show bgp evpn summary +show log | include BGP|EVPN +``` + +**Common Fixes:** +- Add `neighbor evpn activate` in `address-family evpn` +- Check `update-source Loopback0` is configured +- Verify `ebgp-multihop 3` for leaf-spine peering +- Check `send-community extended` is configured + +--- + +## Quick Reference Commands + +### Health Check Script + +Run these commands on **each leaf** for quick validation: + +```bash +#!/bin/bash +# Quick EVPN-VXLAN Health Check + +echo "=== Physical Interfaces ===" +show interfaces status | include Ethernet[1-9] + +echo "=== MLAG Status ===" +show mlag | include state|negotiation|peer-link + +echo "=== BGP Underlay ===" +show ip bgp summary | include Estab|Neighbor + +echo "=== BGP EVPN Overlay ===" +show bgp evpn summary | include Estab|Neighbor + +echo "=== VXLAN ===" +show interfaces Vxlan1 | include "is up|Source interface" +show vxlan vtep + +echo "=== Port-Channels ===" +show port-channel summary + +echo "=== MAC Addresses ===" +show mac address-table count +``` + +--- + +### Traffic Flow Verification + +**Test L2 VXLAN (VLAN 40):** + +```bash +# On host1 +ping 10.40.40.103 -c 3 + +# On leaf1 (VTEP1) +show mac address-table address 00c1.ab00.0033 +show vxlan address-table address 00c1.ab00.0033 + +# On leaf5 (VTEP3) +show mac address-table address 00c1.ab00.0011 +show vxlan address-table address 00c1.ab00.0011 +``` + +**Test L3 VXLAN (VRF gold):** + +```bash +# On host2 +ping 10.78.78.104 -c 3 + +# On leaf3 (VTEP2) +show ip route vrf gold 10.78.78.0/24 +show bgp evpn route-type ip-prefix ipv4 10.78.78.0/24 + +# On leaf7 (VTEP4) +show ip route vrf gold 10.34.34.0/24 +``` + +--- + +## Additional Resources + +- [Arista EVPN Design Guide](https://www.arista.com/en/solutions/design-guides) +- [Arista EOS Manual - VXLAN](https://www.arista.com/en/um-eos/eos-vxlan) +- [RFC 7432 - BGP MPLS-Based Ethernet VPN](https://datatracker.ietf.org/doc/html/rfc7432) + +--- + +**Happy Troubleshooting! πŸš€**