tiemannite

Looking glass

Ask the routers yourself. Pick a router, a query and a target; the answer is the router's own output, unedited.

AS path pattern with * and ?, for example * 13335 *

rtr-ens1 birdc show route where bgp_path ~ [= * 205079 * =]1071 ms

Table master6:
   unicast [ziesel_rtr1 2026-10-23] * (100) [AS205079i]
	via 2001:7f8:160::20:5079:1 on ens19
                     unicast [rodeo_rtr02 2026-10-23] (100) [AS205079i]
	via 2001:678:d64:555::87 on eth0
                     unicast [ensix_rs1 2026-10-23 from 2001:7f8:160::1] (100) [AS205079i]
	via 2001:7f8:160::20:5079:1 on ens19
                     unicast [rodeo_rtr01 2026-10-23] (100) [AS205079i]
	via 2001:678:d64:555::88 on eth0
  unicast [ziesel_rtr1 2026-10-23] * (100) [AS205079i]
	via 2001:7f8:160::20:5079:1 on ens19
                     unicast [ensix_rs1 2026-10-23 from 2001:7f8:160::1] (100) [AS205079i]
	via 2001:7f8:160::20:5079:1 on ens19
                     unicast [rodeo_rtr01 2026-10-23] (100) [AS205079i]
	via 2001:678:d64:555::88 on eth0
                     unicast [rodeo_rtr02 2026-10-23] (100) [AS205079i]
	via 2001:678:d64:555::87 on eth0
  unicast [ziesel_rtr1 2026-10-23] * (100) [AS205079i]
	via 2001:7f8:160::20:5079:1 on ens19
                     unicast [ensix_rs1 2026-10-23 from 2001:7f8:160::1] (100) [AS205079i]
	via 2001:7f8:160::20:5079:1 on ens19
                     unicast [rodeo_rtr01 2026-10-23] (100) [AS205079i]
	via 2001:678:d64:555::88 on eth0
                     unicast [rodeo_rtr02 2026-10-23] (100) [AS205079i]
	via 2001:678:d64:555::87 on eth0

Queries

BGP route
The route the router uses for it, with every attributeIP address or prefix, for example 2001:db8::/32
BGP community
Routes that carry the communityStandard or large community, for example 218369:1:3
BGP AS path
Routes whose AS path matchesAS path pattern with * and ?, for example * 13335 *
Ping
Round-trip times from the router, from my own addressIPv6 address or hostname
Traceroute
The path from the router, from my own addressIPv6 address or hostname

Limits

Six queries per minute and forty per hour per address (per /64 for IPv6). Ping and traceroute: two per minute, and at most six times per ten minutes to the same target. For long-term measurements your own probe (RIPE Atlas, for example) works better.

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