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Личный блог сетевого инженера |
Следующее видео из «Разнообразного BGP» посвящено BGP-LS — верному помошнику SDN решений в MPLS (и не только) сетях.
Ссылки и материалы:
https://www.ciscolive.com/c/dam/r/ciscolive/us/docs/2017/pdf/BRKSPG-2210.pdf
https://d1nmyq4gcgsfi5.cloudfront.net/site/devnetcreations/bgp/
https://packetpushers.net/yet-another-new-bgp-nlri-bgp-ls/
https://tools.ietf.org/html/rfc7752
https://tools.ietf.org/html/rfc8571
Первое видео из новой серии «Разнообразный BGP»! Разбираем одно из первых, заслуженных, но все еще работающих SAFI.
Ссылки и материалы:
https://www.rfc-editor.org/rfc/rfc3107.txt
https://www.rfc-editor.org/rfc/rfc8277.txt
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/mpls/configuration/guide/mpls_cg/mp_interas_optionb_lite.html
https://www.noction.com/blog/bgp-labeled-unicast-bgp-lu
https://www.cisco.com/c/en/us/support/docs/multiprotocol-label-switching-mpls/multiprotocol-label-switching-mpls/119191-config-unified-mpls-00.html
http://www.itbiz.ua/media/docs/Juniper/T%20Series/Network%20Scaling%20with%20BGP%20Labeled%20Unicast.pdf
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-17/irg-xe-17-book/label-unicast-unique-mode.html
https://www.juniper.net/assets/uk/en/local/pdf/whitepapers/2000452-en.pdf
Само видео:
https://www.youtube.com/watch?v=ZKzHdIgvxl4
Разобрал несколько RFC из тех немногих, что все-таки появились за последние три месяца, невзирая на коронавирус. В список вошли:
Обновления для PCEP и TE:
Updated Rules for Processing Stateful PCE Request Parameters Flags
https://www.rfc-editor.org/rfc/rfc8786.txt
Path Computation Element Communication Protocol (PCEP) Extensions for GMPLS
https://www.rfc-editor.org/rfc/rfc8779.txt
The Path Computation Element Communication Protocol (PCEP) Extension for Wavelength Switched Optical Network (WSON) Routing and Wavelength Assignment (RWA)
https://www.rfc-editor.org/rfc/rfc8780.txt
RSVP-TE Summary Fast Reroute Extensions for Label Switched Path (LSP) Tunnels
https://www.rfc-editor.org/rfc/rfc8796.txt
Обновления для DNS:
Apple’s DNS Long-Lived Queries Protocol
https://www.rfc-editor.org/rfc/rfc8764.txt
Discovery Proxy for Multicast DNS-Based Service Discovery
https://www.rfc-editor.org/rfc/rfc8766.txt
Обновления для YANG:
Common YANG Data Types for Traffic Engineering
https://www.rfc-editor.org/rfc/rfc8776.txt
YANG Data Structure Extensions
https://www.rfc-editor.org/rfc/rfc8791.txt
Все остальное:
Mixing Preshared Keys in the Internet Key Exchange Protocol Version 2 (IKEv2) for Post-quantum Security
https://www.rfc-editor.org/rfc/rfc8784.txt
Limited Domains and Internet Protocols
https://www.rfc-editor.org/rfc/rfc8799.txt
Information-Centric Networking (ICN): Content-Centric Networking (CCNx) and Named Data Networking (NDN) Terminology
https://www.rfc-editor.org/rfc/rfc8793.txt
The China Mobile, Huawei, and ZTE Broadband Network Gateway (BNG) Simple Control and User Plane Separation Protocol (S-CUSP)
https://www.rfc-editor.org/rfc/rfc8772.txt
Distributed Denial-of-Service Open Threat Signaling (DOTS) Signal Channel Specification
https://www.rfc-editor.org/rfc/rfc8782.txt
Distributed Denial-of-Service Open Threat Signaling (DOTS) Data Channel Specification
https://www.rfc-editor.org/rfc/rfc8783.txt
Ну и сам разбор
После почти двухмесячного простоя вернулся к каналу. Субботник получился короткий — из интересных новостей только парочку можно выделить, а комитеты IETF работают в четверть силы — количество РФЦ за апрель 2020го в два раза меньше, чем за апрель 2019го.
Discovering PREF64 in Router Advertisements
https://www.rfc-editor.org/rfc/rfc8781.txt
Deployment Considerations for Information-Centric Networking (ICN)
https://www.rfc-editor.org/rfc/rfc8763.txt
Host Router Support for OSPFv2
https://www.rfc-editor.org/rfc/rfc8770.txt
PIM Designated Router Load Balancing
https://www.rfc-editor.org/rfc/rfc8775.txt
DNS Reverse IP Automatic Multicast Tunneling (AMT) Discovery
https://www.rfc-editor.org/rfc/rfc8777.txt
Сам обзор
Обозрел на ютубе RFC за март 2020го (те, что могут быть интересны сетевикам). Подборочка:
Constrained Application Protocol (CoAP) Hop-Limit Option
https://www.rfc-editor.org/rfc/rfc8768.txt
Simple Two-Way Active Measurement Protocol
https://www.rfc-editor.org/rfc/rfc8762.txt
The Session Initiation Protocol (SIP) Digest Access Authentication Scheme
https://www.rfc-editor.org/rfc/rfc8760.txt
Dynamic Link Exchange Protocol (DLEP) Latency Range Extension
https://www.rfc-editor.org/rfc/rfc8757.txt
IPv6 Segment Routing Header (SRH)
https://www.rfc-editor.org/rfc/rfc8754.txt
Hierarchical Stateful Path Computation Element (PCE)
https://www.rfc-editor.org/rfc/rfc8751.txt
Ability for a Stateful Path Computation Element (PCE) to Request and Obtain Control of a Label Switched Path (LSP)
https://www.rfc-editor.org/rfc/rfc8741.txt
Path Computation Element Communication Protocol (PCEP) Extensions for Associating Working and Protection Label Switched Paths (LSPs) with Stateful PCE
https://www.rfc-editor.org/rfc/rfc8745.txt
TCP Extensions for Multipath Operation with Multiple Addresses
https://www.rfc-editor.org/rfc/rfc8684.txt
Бонусом — дока от Cisco как с этим работает, например, АСА https://www.cisco.com/c/en/us/support/docs/ip/transmission-control-protocol-tcp/116519-technote-mptcp-00.html
Multi-Access Management Services (MAMS)
https://www.rfc-editor.org/rfc/rfc8743.txt
Также рекомендую очень забавный (ну, кому как) 1-апрельский RFC «The Quantum Bug»
https://www.rfc-editor.org/rfc/rfc8774.txt
Сам обзор
И пара security RFC, которых нет в обзоре, но по-моему вполне любопытные
TLS 1.3 Extension for Certificate-Based Authentication with an External Pre-Shared Key
https://www.rfc-editor.org/rfc/rfc8773.txt
Implicit Initialization Vector (IV) for Counter-Based Ciphers in Encapsulating Security Payload (ESP)
https://www.rfc-editor.org/rfc/rfc8750.txt
Рассматриваем Cisco SD-Access (архитектура, control-plane и data-plane)
Ссылки на материалы
https://www.slideshare.net/anandnande/how-vxlan-works-on-l2-and-across-l3-networks
https://tools.ietf.org/html/draft-smith-vxlan-group-policy-05
https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/sda-sdg-2019oct.html
https://www.cisco.com/c/dam/en/us/td/docs/solutions/CVD/Campus/sda-fabric-deploy-2019oct.pdf
https://www.evo-net.co.uk/post/sd-access-a-new-era-of-networking-part-1
https://www.cisco.com/c/dam/en/us/solutions/collateral/enterprise-networks/trustsec/trustsec-data-center-segmentation-guide.pdf
https://fastreroute.com/cisco-sd-access-components/
https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2019/pdf/BRKCRS-2810.pdf
YouTube разбор
Разбираем, в чем отличия традиционных WAN решений от Cisco и SD-WAN (ну и немного смотрим, что такое эти самые традиционные WAN).
Ссылки на материалы ( как всегда, субъективно, + official guide )
https://www.cisco.com/c/en/us/products/collateral/security/dynamic-multipoint-vpn-dmvpn/data_sheet_c78-468520.html
https://www.cisco.com/c/dam/en/us/td/docs/solutions/CVD/Oct2016/CVD-IWANDesign-2016OCT.pdf
https://www.ciscolive.com/c/dam/r/ciscolive/apjc/docs/2019/pdf/BRKRST-2669.pdf
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/pfrv3/configuration/xe-3s/pfrv3-xe-3s-book/pfrv3.html
https://www.slideshare.net/NetworkCollaborators/cisco-connect-2018-indonesia-nextgen-cisco-sdwan-architecture
Ну и сам ролик:
Разбираем из чего состоит Cisco SD-WAN (Viptela) и как эти компоненты между собой работают.
Ссылки (немножко из того, что можно найти по теме)
https://www.cisco.com/c/en/us/solutions/enterprise-networks/sd-wan/
https://www.ciscolive.com/c/dam/r/ciscolive/us/docs/2017/pdf/PSOSPG-2003.pdf
https://www.ciscolive.com/c/dam/r/ciscolive/us/docs/2019/pdf/BRKRST-2559.pdf
https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2020/pdf/BRKCRS-2110.pdf
https://www.ciscolive.com/c/dam/r/ciscolive/apjc/docs/2019/pdf/BRKRST-2669.pdf
https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2019/pdf/BRKCOC-1236.pdf
Ну и сам ролик:
https://youtu.be/y1sxzRsMfn0
Решил попробовать вернуться к еженедельным дайджестам (новости, связанные с сетями и свежие сетевые RFC).
Выбранные для обзора RFC (за первые 2 месяца 2020го)
Session Traversal Utilities for NAT (STUN)
https://www.rfc-editor.org/rfc/rfc8489.txt
Traversal Using Relays around NAT (TURN): Relay Extensions to Session Traversal Utilities for NAT (STUN)
https://www.rfc-editor.org/rfc/rfc8656.txt
Forward Error Correction (FEC) Framework Extension to Sliding Window Codes
https://www.rfc-editor.org/rfc/rfc8680.txt
Sliding Window Random Linear Code (RLC) Forward Erasure Correction (FEC) Schemes for FECFRAME
https://www.rfc-editor.org/rfc/rfc8681.txt
PIM Message Type Space Extension and Reserved Bits
https://www.rfc-editor.org/rfc/rfc8736.txt
Scenarios and Simulation Results of PCE in a Native IP Network
https://www.rfc-editor.org/rfc/rfc8735.txt
Path Computation Element Communication Protocol (PCEP) Extensions for MPLS-TE Label Switched Path (LSP) Auto-Bandwidth Adjustment with Stateful PCE
https://www.rfc-editor.org/rfc/rfc8733.txt
Path Computation Element Communication Protocol (PCEP) Extensions for Establishing Relationships between Sets of Label Switched Paths (LSPs)
https://www.rfc-editor.org/rfc/rfc8697.txt
Restart Signaling for IS-IS
https://www.rfc-editor.org/rfc/rfc8706.txt
Enhanced Feasible-Path Unicast Reverse Path Forwarding
https://www.rfc-editor.org/rfc/rfc8704.txt
Dynamic Link Exchange Protocol (DLEP) Link Identifier Extension
https://www.rfc-editor.org/rfc/rfc8703.txt
Application-Layer Traffic Optimization (ALTO) Cross-Domain Server Discovery
https://www.rfc-editor.org/rfc/rfc8686.txt
A YANG Data Model for the Routing Information Protocol (RIP)
https://www.rfc-editor.org/rfc/rfc8695.txt
Network-Assisted Dynamic Adaptation (NADA): A Unified Congestion Control Scheme for Real-Time Media
https://www.rfc-editor.org/rfc/rfc8698.txt
Видео обзор как всегда, на Ютубе
https://youtu.be/_0-BcP1jCr0
Здесь мы говорим о том, как определить местоположение в WiFi сетях и как это работает в Cisco
Материалы
https://www.cisco.com/en/US/docs/solutions/Enterprise/Mobility/emob30dg/Locatn.pdf
https://www.cisco.com/c/en/us/products/collateral/wireless/wireless-location-appliance/product_data_sheet0900aecd80293728.html
https://www.ciscolive.com/global/on-demand-library.html?search=location#/session/1542224314779001rlxi
https://www.ciscolive.com/global/on-demand-library.html?search=location#/session/1518218902803001dsec
https://www.ciscolive.com/global/on-demand-library.html?search=location#/session/1506627285377001xvy0
https://www.cisco.com/c/en/us/solutions/collateral/enterprise-networks/dna-spaces/solution-overview-c22-742158.html
https://www.cisco.com/c/en/us/products/collateral/wireless/mobility-services-engine/datasheet-c78-734648.html
https://www.cisco.com/c/en/us/td/docs/wireless/cisco-dna-spaces/detectandlocate/b-cisco-cle/location_monitoring.html
https://www.cisco.com/c/en/us/support/wireless/3375-appliance-cisco-mobile-experiences/model.html
https://www.cisco.com/en/US/docs/solutions/Enterprise/Mobility/emob30dg/Locatn.html
https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Mobility/WiFiLBS-DG/wifich2.html
YouTube разбор
https://youtu.be/ikt1iOcYUWI