zanny sandy – Page 4 – Network Interview QnA

Checkpoint firewall common commands part1

For starting or stopping firewall services cpstop-Stop all Check Point services except cprid . You can also stop specific services by issuing an option with cpstop. For instance cpstop FW1 stops FW-1/VPN-1 or use cpstop WebAccess to stop WebAccess. cpstart-Start all Check Point services except cprid . cpstart works with the same options as cpstop [...]

common Switch troubleshooting commands

For CPU related issues: Show process cpu sorted Show process cpu history Show platform port-asic stats drop Show controllers cpu-interface Debug platform cpu-queues Show plat for ip For memory issues Show memory statistics Show process memory sorted Show buffers For link issues Show interface status | inc connected Test cable-diagnostics tdr interface <> Show cable-diagnostic [...]

What needs to be done if changes in BGP are not taking effect

Routing policies for a peer include all the configurations such as route-map, distribute-list, prefix-list, & filter-list that may impact inbound or outbound routing table updates. Whenever there is a change in the routing policy, the BGP session must be cleared, or reset, for the new policy to take effect. There are two types of reset, [...]

IPSEC

IPsec consist of several protocols IPsec modes Configuration on Cisco Routers/Firewall Encryption Algorithms Hashing Algorithems IKE Phases Terminilogy Troubleshooting

Etherchannel

There are three types of Etherchannels negotiation mechanism PAgP (Port Aggregation Protocol)- Cisco’s proprietary negotiation protocol LACP (Link Aggregation Protocol) – Standards-based negotiation protocol Static Persistence (“On”) – No negotiation protocol is used There are two types of Etherchannels 1) Layer2 2) Layer3 1) Layer2 Etherchannels: Switch1(config)# interface range gigabitethernet0/1 -4 Switch1(config-if-range)# switchport access [...]

EIGRP

Protocol Header Formula Configuration Attributes