Yearly Archive: 2017
Spanning Tree safeguards
Problem Description: A bridging loop or spanning tree loop caused a network outage. To break the loop you’ve pulled one of the redundant links or shut down one of the switches that are participating in the loop but now you’re…
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Display Filter References
Display Filter References https://www.wireshark.org/docs/dfref/ Variables : == != or && and not | “with” tcp. udp. ip.src ip.dst tcp.windows_size == 0 && tcp.flags.reset !=1 frame.len<1500 http sip. icmp ip.src in {192.168.10.1 8.8.8.8} tcp in {80…
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Filter Operators
Virtual Images Features For EVE-NG
I have put this list down so as a reference when creating labs which devices supports which features. Talaaaaaaaaa !!! Cisco Devices: IOSv, IOSvL2, IOS-XRv, CSR1000v, NX-OSv, ASAv List of supported features for IOSv: 802.1Q, AAA, ACL, BGP, DHCP, DNS,…
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QoS
Ip Precedence DSCP ToS Lookup Table Picture was taken from :http://www.netcontractor.pl/blog/wp-content/uploads/2011/11/QoS-Values-Calculator-v3.jpg can’t beat that qos table !!!! Ok so this post is going to be a mess at 1st and then i will clean it out , since am not understanding everything…
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Virutal Port Channel
Step 1. Configure the management interface IP address and default route. N5k-1(config)# int mgmt 0 N5k-1(config-if)# ip address 172.25.182.51/24 N5k-1(config-if)# vrf context management N5k-1(config-vrf)# ip route 0.0.0.0/0 172.25.182.1 Step 2. Enable vPC and LACP. N5k-1(config)# feature vpc N5k-1(config)# feature lacp…
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BGP Communities
BGP Communities attributes RFC 1997 Here are the 4 well known BGP communities: Internet: advertise the prefix to all BGP neighbors. No-Advertise: don’t advertise the prefix to any BGP neighbors. No-Export: don’t advertise the prefix to any eBGP neighbors….
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