ccna 640

ccna 640

Downstream assigned label ! 205 Remarks !! OSPF cost of the interface The LSP mainly contains the following information. Reservable Bandwidth[1]: Name: R2-PE1_t0 Status: Interface eth0/0 Next-address loose 10.1.45.5 Set-attached-bit route-map test Address-family ipv4 vrf VPN-A no synchronization The TTL is placed in the label header. Turning off TTL propagation prevents the MPLS network from being exposed (by traceroute ). 0xA339 In CISCO IOS routers, IOS cannot automatically allocate bandwidth-based link (interface) metrics. Regardless of the bandwidth of the link, the default IS-IS metric for all interfaces is 10 , of course you can modify it. The maximum metric for a full path is 1023 . Of course, the IETF has extended the default metric . Router-id 4.4.4.4 IP Address: Metric: 10 *Mar 1 00:00:32.783: ISIS-Upd: Sending L1 LSP 0000.0000.0002.00-00, seq 37, ht 1199 on ! We spotted FIG, C for 30.0 / 24 bundled label prefix 0 , i.e. explicit null label, the label is then sent to map B , B also generates its own tag map is then sent to A . Then, at this time, if B receives a label packet from A and the value of the top label is 20 , then B finds its own LFIB and finds that the label is to be converted to 0 . Therefore, B replaces the top-level label with 0 and then forwards it to C. At this time,ccna 640, for C , it receives a label packet with a label value of 0. C cannot forward the label value 0 in the LFIB . Message, because this tag value can be assigned to multiple FECs , C just pops up 0The tag is also an explicit null tag. After that, another search has to be performed. Although the search has to be performed twice, C can obtain the QoS information of the packet by looking at the EXP bit of the tag header .