Tài liệu FRAME RELAY pptx

FRAME RELAY Key Commands Shows and Debugs Encapsulation frame relay ip address 10.1.4.2 255.255.255.0 encapsulation frame-relay frame-relay map ip 10.1.4.1 43 broadcast frame-relay map appletalk 18.2 10 broadcast frame-relay interface-dlci 42 Frame Relay DE Support: Frame-relay de-list 3 protocol ip gt 512 <- packets > 512 byt ! interface serial 0 encapsulation frame-relay frame-relay de-group 3 Show frame pvc Show frame lmi Show frame map Related: Show ip ospf interface serial X Make sure the network type is same! Command shows RID, net type and neighbors Clear frame inarp Show frame route Additional Commands Notes frame-relay switching interface serial 0 frame-relay intf-type dce frame-relay lmi-type cisco clock rate 56000 frame-relay router 102 interface serial 1 106 Frame-relay traffic shaping: Map-class frame-relay MyClass Frame-relay adaptive-shaping becn <- becn support Frame-relay cir 56000 <- defines cie value for TS Frame-relay bc 1100 <- defines a Bc value for TS Frame-relay mincir 1000 <- def min cir for TS ! interface serial 0 encapsulation frame-relay frame-relay traffic shaping frame-relay class MyClass • Split horizon is disabled on frame-relay physical IP interfaces • Split horizon is enabled on pt-to-pt IP sub-int • Split H is enabled on pt-to-multipt IP sub-int • If Split H is disabled on physical ints, that interface is subject to routing loops. Use distribution lists! • Use the “ip ospf network” command! • Check the lmi-type on frame switch in troubleshooting phase if LMI not working right • If spokes are on physical interfaces, RE-ENABLE SPLIT-HORIZON! Off by default on physical interfaces • If REQUIRED to have different ospf network types at each end, then must manually adjust the ospf timers with “ip ospf hello-interval”, “ip ospf dead-interval” and “ip ospf retransmit-interval” Spot The Issue Notes • Debug frame packet shows “encapsupation failed”. This is normally due to a point-to- multipoint circuit not having a proper “frame relay map ip” statement pointing to the remote DLCI. • Entering a frame-map statement disables inverse-arp for that protocol on that DLCI. Problem is acute on spoke links: in0arp resolves hub, no problem. Frame-map to other spokes through same DLCI, “show frame map” has both in. Problem is in-arp is disabled for that DLCI. Hub address is still mapped from initial in-arp. On reload, since a frame-map is there, the hub is NOT resolved. If you map one, map them all. • Enter frame-map BEFORE no shut the interface, otherwise 0.0.0.0 entries will appear in show frame map. If so, save and reload. • Look for ACTIVE in show frame pvc • INACTIVE means you are talking to the switch properly, but the remote side is not • DELETED means that you are not talking to the switch properly or the switch is misconfigured. • Consecutive “show frame lmi” will have an increasing counter of in-packets. Use this to verify connectivity • In-arp won’t work from spoke to spoke. Need to configure a frame-map. • Can also configure point-to-point interfaces, better, but might not be allowed in the lab. • ALWAYS USE THE BROADCAST STATEMENT IN FRAME- RELAY MAPS!!! • Put neighbor statements on ospf network type non-broadcast. Only for DR/BDR candidates. Won’t show up in the configs if priority 0 . FRAME RELAY Key Commands Shows and Debugs Encapsulation frame relay ip address 10.1.4.2 255.255.255.0 encapsulation frame- relay frame- relay map. ip 10.1.4.1 43 broadcast frame- relay map appletalk 18.2 10 broadcast frame- relay interface-dlci 42 Frame Relay DE Support: Frame- relay de-list 3 protocol