Table of Contents

Apache Traffic Server

Apache Traffic Server (ATS) is used as a caching proxy for TiVo content delivery at the NTT Sacramento data center. It runs on Edge2 and DemoCache servers.

Edge2 (Primary ATS Server)

Attribute Value
Hostname edge2
Type VMware VM (on nttesxi1)
OS AlmaLinux 9.5 (Teal Serval)
Role TiVo Parent Cache / ATS Cache
ATS Version 9.2.8 (Jan 30 2025)
Public IP 68.66.14.156/29
Encoder IP 172.17.240.135/28

Network Interfaces

Interface IP Address VLAN Purpose
ens41 68.66.14.156/29 68 Public Internet (Packet Fabric)
ens40 172.17.240.135/28 240 Encoder Network
ens37 172.17.240.13/29 10 Admin
ens36 10.100.2.30/24 200 TiVo Public
ens35 172.17.240.27/29 26 DMZ

ATS Configuration

Metric Value
Listening Ports 80, 443 (SSL/HTTP2)
Cache Total 274 GB (~256 GB usable)
Cache Used 99.99%
RAM Cache Auto (-1)
Proxy Name live-fcm.telev8.live

Key Services

Service Status Description
trafficserver.service Running Apache Traffic Server 9.2.8
frr.service Running FRRouting (BGP/PIM)
firewalld.service Running Host firewall
sshd.service Running SSH server

DemoCache

Attribute Value
Hostname democache1
Type Physical Server (HP ProLiant DL360)
OS AlmaLinux 9.5
Role Demo Cache Server
Public IP 68.66.14.155/29
Admin IP 172.17.240.14/29
TiVo IP 10.100.2.20/24

Routing

Edge2 learns BGP routes from NTT-BGP1 for TiVo internal networks:

Destination Gateway Notes
default 68.66.14.153 Primary (Packet Fabric)
10.100.1.0/24 172.17.240.129 BGP from VyOS
10.173.x.x 172.17.240.129 TiVo networks (BGP)
172.17.x.x 172.17.240.129 Internal networks (BGP)

Monitoring

ATS metrics are collected by the Telev8 ATS Dashboard running on NTT-Media2:

Access

# Direct SSH (public)
ssh mmunger@68.66.14.156
 
# ATS status check
sudo traffic_ctl server status
sudo traffic_ctl metric get proxy.node.cache.bytes_used